matlab get x value from plot

I first plot data using the scatter function, and then set the x-axis and y-axis limits. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Sign in to answer this question. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. Basically, there are two ways to implement the xlim () function in Matlab as follows. So, How to convert C position to xy coordinate?? Plot Single Data Series at Specified x values Plot 50 data values of cosine evaluated between 0 and 2 and specify the set of x values for the stem plot. Ready to optimize your JavaScript with Rust? Issue Plotting 2 different Values. Are they actually plotted as a separate series? Haupt-Navigation ein-/ausblenden . Define the function, y = f (x) Call the plot command, as plot (x, y) Following example would demonstrate the concept. The question is not clear. Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? To learn more, see our tips on writing great answers. If you want to get the values of unknown points from the figure and have to use in code then this could be helpful. Reload the page to see its updated state. Let's understand this function with the help of an example: fplot (@ (x) x^2) Here we have taken square function as the one which we need to plot. How can I get the x and y coordinates of this matrix to create a 3D surface? Why do American universities have so many gen-eds? Introduction to Matlab Plot Multiple Lines. so if i want, You may receive emails, depending on your. Accepted Answer Star Strider on 8 Nov 2014 or flow_depth = y (end,:); So far you just know the max value. Accelerating the pace of engineering and science. I just wrote them in Photoshop help clarify the question. How to smoothen the round border of a created buffer to make it look more natural? We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. 1. Use an empty matrix [] to specify, by METHOD to perform extrapolation for elements of Xq outside, Vq = interp1(X,V,Xq,METHOD,EXTRAPVAL) replaces, extrapolation behavior with four input arguments, 'extrap' for 'spline' and 'pchip' and EXTRAPVAL = NaN (NaN +NaNi for, use the interpolation algorithm specified, METHOD to generate the ppform (piecewise polynomial form) of V. The, may be any of the above METHOD except for 'v5cubic'. t = -0.5:1/Fs:0.5; % Time vector of 1 second. Sudo update-grub does not work (single boot Ubuntu 22.04). Objectives: Learn how to obtain the coefficients of a "straight-line" fit to data, display the resulting equation as a line on the data plot, and display the . How can I get it? To comment a single or two lines of code, we can use the % character . like what is "xi"? If you choose to interpolate tou can construct a new set of points, and interpolate over that set. How to plot two histograms together in R? % This code solves for x given a value of y. Is this possible? Learn more about matrices, plot MATLAB. Find centralized, trusted content and collaborate around the technologies you use most. MathWorks is the leading developer of mathematical computing software for engineers and scientists. MATLAB stores rational numbers as doubles by default, which is a measure of the number of decimal places that are stored in each variable and thus of how accurate the values are. The values in between are the velocities of each point. Other MathWorks country If the resolution of your data is high, it is likely that it will be a good approximation. The problem I'm having is I don't know how to get the x values. However, say that I have plotted a graph with plot (t, sin (2*pi*t)). I want to get some specific values from a Matlab Figure. In order to find the maximum value, you need to employ some MATLAB functions (max and find). offers. Do you want the y values exactly at the position of an x value, or are you interested in x values between two given x values also? Counterexamples to differentiation under integral sign, revisited, Penrose diagram of hypothetical astrophysical white hole. If you only care about this specific vector y, you could manually adjust the calculation since the plot command already did linear interpolation by default when invoked. I have a matrix, where the first row is my x direction and the first column is my y direction. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Like in sample pictures. and what if i want to take range of values form Point A to B ? x = 1:100; % Initialise plot handle h = plot (nan,nan); for iter = 1:1e2 y = rand + rand*x + rand* (x.^2 ); % set appropriate values of handle set (h, {'XData','YData'}, {x, y}); drawnow; end This way, a plot handle is created only once, and its properties are set in the loop. How to say "patience" in latin in the modern sense of "virtue of waiting or being able to wait"? It is working, I've already do that but I need the flow depth numerically (y) at the end of my channel (x=xmax). Find centralized, trusted content and collaborate around the technologies you use most. I have two excel files, the script extracts the data from the 2 files. You already have x, and y since you plotted it, so there's no need to extract. If there isn't a data set, it would be nice to get the value of how the plot line is drawn for the points. To plot multiple sets of coordinates on the same set of axes, specify at least one of X or Y as a matrix. Weiter zum Inhalt. did anything serious ever run on the speccy? So I have a set of y data in MATLAB, and the plot comes out as a bell shaped curve. Note that MATLAB represents irrational numbers such as pi with rational approximations, except when using the symbolic math toolbox. Find the treasures in MATLAB Central and discover how the community can help you! If you don't have the abscissae and you are creating the plot by only providing y as input to the plot function, i.e., plot(y), then the y values are plotted against the vector 1:length(y). x_high=100; %the highest value of x that the for loop could possibly output. how i can write these at the command window ? Is the EU Border Guard Agency able to tell Russian passports issued in Ukraine or Georgia from the legitimate ones? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Share The rubber protection cover does not pass through the hole in the rim. How can I plot a pattern of random points in a specific region? To plot a set of coordinates connected by line segments, specify X and Y as vectors of the same length. I want to find x value given y value, y value is [0.2 0.4 0.7 0.9 1.0] %Finding X value with known Y value on plot clc; clear all; close all; x= 0:0.01:5; y= [0.2 0.4 0.7 0.9 1.0] [X, Y] = me. A,B,C or not the part of Plot. Copy. if you plot, in section tools,basic fitting you can evaluate, I agree with Jan - it's ambiguous. or in opposite, if C is one point of xy coordinate, how to get position of C in x'y' coordinate? Accelerating the pace of engineering and science. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, What are those points (A, B, C) etc? I would really appreciate any help anybody could offer, I've been stuck trying to do this for the past 6 hours. Something can be done or not a fit? Just set the value for x_low, % x_high, and y. Based on % Get the first index where 'y' is greater than some threshold thresh = 10; idx = find ( y >= thresh, 1 ); % Find 1st index where y >= thresh % Get the x value at this index xDesired = x ( idx ); Note that xDesired will be empty if there was no y value over the threshold. Find the treasures in MATLAB Central and discover how the community can help you! rev2022.12.9.43105. Toggle Sub Navigation. I have a code that generates an EMG plot of three breathing attempts. Save plot to image file instead of displaying it using Matplotlib, Adding a legend to PyPlot in Matplotlib in the simplest manner possible, Making a line plot of a set of values in MATLAB. In the first case consider, that numerical comparisons are bounded by the numerically limited precision: % Linear interpolation [EDITED, not "linspace"]. Choose a web site to get translated content where available and see local events and t = -0.5:1/Fs:0.5; % Time vector of 1 second. Now, I create new XY coordinate with a is original point. That's all true, but we should probably stop to tell Karim that MATLAB does have a lot of tools for evaluating points on some of those many interesting functions. C is one point of x'ay' coordinate. Try this code, Its working for me Code is according to Time and Y figure. I just Wrote them in Photoshop to make Understand the Question. PPVAL(PP,Xq) is the same as, You may receive emails, depending on your. i have 30,000 rand value that i want to separate 400 to 400.then i wanna plot them but the x axis should start at 0 not 400 or 800 or.any help please? Cooking roast potatoes with a slow cooked roast. To learn more, see our tips on writing great answers. Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? sites are not optimized for visits from your location. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. With the first you could write. Effect of coal and natural gas burning on particulate matter pollution, 1980s short story - disease of self absorption. When would I give a checkpoint to my D&D party that they can return to if they die? Furthermore, you probably want the wrong thing. It will just replace 1-9 with your array. To get the number of values above threshold = 0.05 you can type above_thresh_count = length (y (y>=threshold)); If the implied time step is Ts, then The output of our example will be as shown below: Zooming a portion of figure in a figure-Matlab. Matplotlib generates the minimum and maximum values of variables to be presented along the x, y (and z-axis in the case of a 3D plot) axes of a plot automatically. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. Accelerating the pace of engineering and science. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Connecting three parallel LED strips to the same power supply. For example, you might want to look at interp1: Theme Copy x = 1:5; y = randn (1,5); plot (x,y,'-o') xhigh = linspace (1,5,100); yhigh = interp1 (x,y,xhigh,'spline'); hold on clc; clear all; Fs = 150; % Sampling frequency. Matlab has the ginput for getting the (x,y) value of where you have clicked on the graph. It is possible, however, to define explicit limits by using the following methods: By using xlim () and ylim () By using set_xlim () and set_ylim () By using axis () Passer au contenu. I plot x-y graph (Gaussian function) and want to get the x-axis value (will be two points in this case) at a certain y-axis value (half of the maximum) I tried this but it didn't work: Theme. Please help me, value = find(Y == Y); xaty = x(value) or u can take find(Y == 1) this will also work if size is big, and how does this work if i want to retrieve mulitple values at once? Check out the. I'm using the ode45 (x,y) for solve an open channel flow problem (plot the surface profiles). There are certain steps that you need to follow for Matlab function plot, and these are: Define the variable x, by highlighting the range of the values for x variable, for which the functions can be plotted. Sign in to comment. Define the function, y = f (x). To subscribe to this RSS feed, copy and paste this URL into your RSS reader. will give you an under-approximation (in general; unless the data set is artificial) of the duration you are seeking. Hi, how can I extract data andd save as mat file from a figure which has 3 subplots, like this: let say i have y values and need to find the corresponding location, can we find the unspecified location? Call the command for function plot with the file name plot (x,y). Find the treasures in MATLAB Central and discover how the community can help you! Sign in to comment. The number of values can be 3, 5, 10, 50 or any N integer. Explain why my code does not do what you want. But you did not explained the code. So, that means you have 6 curves and 9 data points for each curve. https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_537019, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#answer_305991, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_584148, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_1187993, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_1962535, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_1962595, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_2169550, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#comment_2274400, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#answer_619987, https://www.mathworks.com/matlabcentral/answers/383567-how-to-extract-x-y-data-values-from-matlab-figure#answer_1050830. How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? You can leave default variable name ans. The script finds the values range from 1st of . I don't have the x values, and .05 isn't an actual data point in the y vector. Where does the idea of selling dragon parts come from? The script works for specific years but not for some because of not same vector size. Otherwise, you could look at the interpolation commands, if you want the whole process automated and repeatedly executed. This is how our input and output will look like in MATLAB command window: Input: x = linspace (0, 3*pi, 50); y = sin (x); plot (x,y) hold on y1 = cos (x); plot (x, y1) hold off title ('Trigonometric waves', 'Sine & Cos wave') Output: As we can see in the Output, we have obtained a plot of a sine and cos wave with the required title and a sub-title. Can a prospective pilot be negated their certification because of too big/small hands? Thanks for contributing an answer to Stack Overflow! To subscribe to this RSS feed, copy and paste this URL into your RSS reader. Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? your location, we recommend that you select: . Ready to optimize your JavaScript with Rust? Lets normalise our X values so the data ranges between -1 and 0. such a simple issue, but I am a Matlab novice. https://in.mathworks.com/matlabcentral/answers/2951-extracting-data-series-from-fig-file#comment_2357085, You may receive emails, depending on your. Note: On every execution of the code input values can be different. How to get the 3rd column in an array by using 1st and 2nd column values as index in Matlab; Get list of property names and values for a MATLAB plot; Confusion in figuring out the relation between actual frequency values and FFT plot indexes in MATLAB; Retrieving X and Y values from Matlab Plot; How do I make the colorbar of my image plot in . add $6800 and $1142.4 = $ 7924.4. I want to get some specific values from a Matlab Figure. After the plot code i have an input prompt that asks user to select closest x axis value for one of the chosen 3 attempts. Reload the page to see its updated state. matlab ,MATLAB GUI_cherry- matlab ; Drawnow on Matlab: It store the figure or store the variable? I'm sorry, I tought that the code was self explanatory. % set it equal to y_i. Why do American universities have so many gen-eds? Automatic xlim () selection: In this method, we specify the limit for the current axis or chart by using an automatic way. please why we wrote this,,,,,,,,,,,,,,,,, LineH = get(gca, 'Children'); x = get(LineH, 'XData'); y = get(LineH, 'YData'); , for example by calling the clear('x') command. But i cannot seem to do that when the dialog box prompt comes up. To plot the graph of a function, you need to take the following steps . Step 1: to get the total amount you would pay for 4 years add the principal amount &6800 and the APR 4.2% = 285.6x 4 years = $1142.4 interest for 4 years. Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? error in plotting a figure in matlab program, Using suptitle overrides ('visible', 'off') figure property in matlab, Matlab: Loop over files, plot data in one figure & add file names as legend, Legend each curve in a single figure from a matlab plot. Choose a web site to get translated content where available and see local events and Isn't that exactly what I just showed you how to do? As an example on figure i want to find the time of the 68.5 m/s ?? how to create different matrices? Choose a web site to get translated content where available and see local events and MATLAB: get min x value of struct of vectors matrix get min values of a matrix before max values occurred OpenCV can not get the right max and min values of Mat matlab how to get min value and its index in a matrix python matplotlib specgram () max plot value appears incorrect Replace -inf by min and +inf by max value in matlab array Not the answer you're looking for? Running the for loop, ends up in having created a slope matrix, with 3 values inside, which reprenset 3 different slopes. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. Unable to complete the action because of changes made to the page. Asking for help, clarification, or responding to other answers. I have a matrix , X=[5 6 9 8 4] Y=[8 7 2 1 9] If I plot this and I need to get position of the X value corresponds to Y=1, that means in which row the X value 8 is located? Navigazione principale in modalit Toggle . (TA) Is it appropriate to ignore emails from a student asking obvious questions? If you have a chart and you just want to find out the values of arbitrary points on the chart you can use the ginput function or by far the simplest solution is to just use the interactive data cursor built into the figure window. I need to know what the x values are at these points and get the difference between the two, thus giving me the duration. How is the merkle root verified if the mempools may be different? I want to find x value given y value, y value is [0.2 0.4 0.7 0.9 1.0] %Finding X value with known Y value on plot clc; clear all; close all; x= 0:0.01:5; y= [0.2 0.4 0.7 0.9 1.0] [X, Y] = me. Why did the Council of Elrond debate hiding or sending the Ring away, if Sauron wins eventually in that scenario? from the axes (graph) at all. After that, we need to enable the auto limit selection. PP may then, evaluated via PPVAL. Theme Copy yDesired = interp1 (x,y, desiredXValue); 7 Comments on 1 Feb 2022 Sign in to comment. MaxVelocity = max (Y) This will imply the peak value of your velocity profile. Extract X,Y data from scatter plot. After the plot code i have an input prompt that asks user to select closest x axis value for one of the chosen 3 attemp. Add a new light switch in line with another switch? i have 30,000 rand value that i want to separate 400 to 400.then i wanna plot them but the x axis should start at 0 not 400 or 800 or.any help please? MathWorks is the leading developer of mathematical computing software for engineers and scientists. Plot Multiple Data Series at Specified x values How can I extract data in a vector from semilogx figure? Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. MATLAB will plot each column as its own series. How to get x coordinates from a matrix - MATLAB Answers - MATLAB Central How to get x coordinates from a matrix Follow 2 views (last 30 days) Show older comments Jin Chua on 1 Feb 2017 0 Commented: Star Strider on 5 Feb 2017 I have a matrix with pixel values and zeros. Why is it so much harder to run on a treadmill when not holding the handlebars? Did the apostolic or early church fathers acknowledge Papal infallibility? Start Hunting . Zooming in on generated graph in order to get. So basically what this means is that since this is a bell shaped curve, there are 2 instances where y = .05. If you don't have the abscissae and you are creating the plot by only providing y as input to the plot function, i.e., plot (y), then the y values are plotted against the vector 1:length (y). Based on Sudo update-grub does not work (single boot Ubuntu 22.04). Therefore, I want to give a commend that orders to give the y-value at certain x-value. A,B,C are not the part of Plot. rev2022.12.9.43105. Making statements based on opinion; back them up with references or personal experience. Vai al contenuto. I want to be able to have the cursor move on the actual plot, and by clicking it, I get the (x,y) coordinate of my plot (in this case, the time and the value of sine). Based on 1. fplot (f) This will plot the graph defined by the function y = f (x). Since you are setting your marker color, you probably noticed that (each series is assigned a different color How do I find this if the size of matrix is very big.. Based on this matrix I want to create a 3D plot, where one axis is my x-direction, the second axis is my y-direction and the third axis is the velocity changes. This variable will contain X and Y coordinates of all selected points. The peak goes from 0 to .25, and what I need is the duration of this peak with a threshold of .05. ? answer should be 4th position. Why is this usage of "I've to work" so awkward? But if you want to find corresponding time value for max velocity, first you need to find index of it. sites are not optimized for visits from your location. To get the number of values above threshold = 0.05 you can type. . Then just run mean (ans (:,2)) to get average of Ys. Click brush icon on the figure toolbar and make a selection. . I guess the most simple way is to zoom in and see the value, but there are about 1 thousand data to work with. Then select in menu Tools-Brushing-Create new variable. That means your semilogx plot is made up of 519 data series with 756 data pairs in each one. I just wrote them in Photoshop help clarify the question. I need to plot the water level for each specific year on y axis and ice conentration average on x axis. How to changes X Y coordinate System and get value point? In this method, we need to specify the automatic method that is tight and padded. Let us plot the simple function y = x for the . I have found the minimun value among them (-0.0168), and now, I would like to getting back from that value (the minimum), and to call back the corresponding WZ and J values associated Theme Copy J = [2.5 27 56]; Please help me Guillaume on 29 Aug 2016 @Pooja Patel Theme Copy value = find (Y == Y) If you did that unwise thing, then it's possible to extract your data from the graph, which has, in effect "stored" it. I have the axis limits and style set to 'equal', so when the limits are changed, the size of the plotting area is automatically changed to maintain the correct aspect ratio. Did neanderthals need vitamin C from the diet? Is there any way I can do this, or is this impossible? Please explain this by editing the original questions. Respected Image Analyst gave the best answer; I am just simplifying it with examples. Learn more about scattered data, extract value, plot . The length of the input values (Graph Values) can also change every time. Connect and share knowledge within a single location that is structured and easy to search. xvalue = interp1 (y_bluesignal,x_bluesignal, 50.05) and idx = find (y_bluesignal == 50.05); Xidx = x_bluesignal (idx); may work if there is an entered data point at y=50.05 (use a tolerance as in the above comments if this is a calculated value), the interp method will work regardless Share Improve this answer Follow edited Aug 29, 2018 at 16:01 But perhaps you have a Figure file and lost the x and y values. Reload the page to see its updated state. The number of values can be 3, 5, 10, 50 or any N integer. This requires user to zoom in on generated plot. MATLAB Answers. Making statements based on opinion; back them up with references or personal experience. Unable to complete the action because of changes made to the page. offers. The first line intersects the set of points that follow x1 with the set of points that precede x2, and the return the indices. Add a new light switch in line with another switch? So in that case, I'd just use the x and y which are already available, and if the x is in the x array that you plotted, you can do this: in your x array, then you can use interp1() to get the interpolated/estimated y value for that x. i am so sorry for complexity the problem is that i plotted a figure of x , y then i want the program automatically uses the y value (any value) when its x value used (it is used in a loop) thanks alot for ur care. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. 1 Link If you want to get the values of unknown points from the figure and have to use in code then this could be helpful. offers. Search Answers Clear Filters. (interpolation etc..) How can I do that? Copy. First open the figure, then obtain the x and y coordinates of the line with, To obtain the value yi at the point with abscissa greater or equal then xi you can write, To extract the values between the points with abscissa x1 and x2 you can follow both strategies. See that section for details. Following is described of my question. The plot is created over the default interval [-5, 5]. your location, we recommend that you select: . figure X = linspace(0,2*pi,50)'; Y = cos(X); stem(X,Y) fig2plotly(gcf); The first vector input determines the position of each stem on the x-axis. Find the treasures in MATLAB Central and discover how the community can help you . Learn more about plot, graph, input prompt, prompt MATLAB . Find the treasures in MATLAB Central and discover how the community can help you! In fact I showed you how to do it two different ways. Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? Thanks for contributing an answer to Stack Overflow! Learn more about collect, symbolic, subs MATLAB, Symbolic Math ToolboxStep-by-step explanation. Man, I just spent so long trying to figure this out. I have added some comments. Unable to complete the action because of changes made to the page. Doing this will give you equal spacing. https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_503858, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_96318, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169060, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169068, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169131, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_482718, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_1448607, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_1458001, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_1964845, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_96292, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169059, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169132, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169133, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169136, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169268, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_96291, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#comment_169057, https://www.mathworks.com/matlabcentral/answers/86764-getting-data-from-plot#answer_302068. Are the S&P 500 and Dow Jones Industrial Average securities? Other MathWorks country plot (X,Y) creates a 2-D line plot of the data in Y versus the corresponding values in X. I plot x-y graph (Gaussian function) and want to get the x-axis value (will be two points in this case) at a certain y-axis value (half of the maximum) I tried this but it didn't work: Theme. MATLAB plots every column as a seperate curve. Skip to content. Are defenders behind an arrow slit attackable? Other MathWorks country Theme. what if you want to extract data of two lines ? please find the attachment; in the figure, there are two data values. x-axis data is 1-9 because you did not provide any data for MATLAB to plot with. i have 30,000 rand value that i want to separate 400 to 400.then i wanna plot them but the x axis should start at 0 not 400 or . Define x, by specifying the range of values for the variable x, for which the function is to be plotted. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. Connect and share knowledge within a single location that is structured and easy to search. i need the x and y values of this data. If you plot x versus y, the values are known and therefore the problem has not relation to the plotting. answer should be 4th position. I plot an x , y graph can i ask the programme to tell me the value of y for the value of x i want ? thank u alot ,,, i found ur answer very useful,,,,,,, i only wanted to explain my question. Great explanation. x_low=-100; %the lowest value of x that the for loop could possibly output. Some explanation would improve this answer. >> x=1:1:100; >> y=5*x+10; >> yDesired = interp1(x,y, 10), =====================================================================================, >> y=5*x.^2+2*x+10; >> plot(y,x) >> xDesired = interp1(y,x, 60), -----------------HELPFILES---------------, default is linear interpolation. I plot x-y graph (Gaussian function) and want to get the x-axis value (will be two points in this case) at a certain y-axis value (half of the maximum) I tried this but it didn't work: Theme Copy clc; clear all; Fs = 150; % Sampling frequency t = -0.5:1/Fs:0.5; % Time vector of 1 second x = 1/ (sqrt (2*pi*0.01))* (exp (-t.^2/ (2*0.01))); figure; Not the answer you're looking for? Asking for help, clarification, or responding to other answers. I want to get values of A, B, C. in form of e.g A=(430,0.56). Copy. I want to find x value given y value, y value is [0.2 0.4 0.7 0.9 1.0] %Finding X value with known Y value on plot clc; clear all; close all; x= 0:0.01:5; y= [0.2 0.4 0.7 0.9 1.0] [X, Y] = me. . MathWorks is the leading developer of mathematical computing software for engineers and scientists. How I can get specific values from Matlab Figure. How many transistors at minimum do you need to build a general-purpose computer? clc; clear all; Fs = 150; % Sampling frequency. thank u very muchi am so happy to know such helpful men like u , Jan Simon and Ilham Hardy. More Answers (3) Getting an x values from a plot in MATLAB. Like in sample pictures, I want to get values of A, B, C. in form of e.g A= (430,0.56). 4 Answers Sorted by: 2 Another option is to use data brush. How could my characters be tricked into thinking they are on Mars? I have a matrix , X= [5 6 9 8 4] Y= [8 7 2 1 9] If I plot this and I need to get position of the X value corresponds to Y=1, that means in which row the X value 8 is located? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. kedarps 851 Reference: stackoverflow.com POPULA POST A,B,C are not the part of Plot. https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#comment_387639, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#comment_387642, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#answer_91764, https://www.mathworks.com/matlabcentral/answers/82050-finding-x-value-corresponds-to-a-particular-y-value#comment_801434. Enter the formula in terms of x inside the for loop and. index = find (x == desiredXValue); % May be multiple indexes, possibly yDesired = y (index); Now, if the desired x is not in your x array, then you can use interp1 () to get the interpolated/estimated y value for that x. your location, we recommend that you select: . sites are not optimized for visits from your location. Theme Copy delete 2.fig; savefig ('2.fig'); open ('2.fig'); h = gcf; %current figure handle axesObjs = get (h, 'Children'); %axes handles dataObjs = get (axesObjs, 'Children'); %handles t xdata = get (dataObjs, 'XData'); How do I find this if the size of matrix is very big.. . Why does the idea of selling dragon parts come from 519 data series at Specified x values and... Can use the % character these at the interpolation commands, if Sauron wins eventually in that scenario input... Different ways more natural is created over the default interval [ -5, 5 ] do know!, by specifying the range of values form point a to B, Xq ) is cheating... Semilogx plot is made up of 519 data series with 756 data pairs each! Means you have 6 curves and 9 data points for each specific year on y axis and ice average. Waiting or being able to tell Russian passports issued in Ukraine or Georgia from the legitimate?. Your RSS reader index of it as an example on figure I want, you agree our. To xy coordinate? desiredXValue ) ; 7 Comments on 1 Feb 2022 sign in to a. Clicking Post your answer, you may receive emails, depending on.! Very muchi am so happy to know such helpful men like u, Jan and... Do it two different ways the Ring away, if Sauron wins eventually in that scenario negated! Holding the handlebars interpolate tou can construct a new light switch in line with another switch reprenset 3 slopes..., specify x and y figure knowledge within a single location that is tight and padded the (,. Y coordinates of this data, see our tips on writing great answers max. 9 data points for each curve terms of service, privacy policy and cookie policy least of! X matlab get x value from plot and the plot is made up of 519 data series at Specified x values how I. Figure I want to get the number of values can be different click brush icon on same... ; in the y vector in between are the velocities of each point ) can also every. Maximum value, you need to enable the auto limit selection for given. If the resolution of your data is 1-9 because you did not provide any data MATLAB... Method that is structured and easy to search semilogx figure treasures in MATLAB, symbolic math ToolboxStep-by-step explanation the... Help you the lowest value of where you have 6 curves and 9 data points for each curve the steps... This for the coordinates connected by line segments, specify x and y of... I have a set of axes, specify at least one of inside. Each curve so, how to smoothen the round border of a, B, C are not for! The student does n't report it is this impossible icon on the same power supply working me! = x for the need to enable the auto limit selection matlab get x value from plot pollution, 1980s short story disease. The round border of a function, y ) this will imply the peak matlab get x value from plot of y data MATLAB. Waiting or being able to wait '' plot comes out as a bell shaped curve, there are instances! The following steps vectors of the same as, you may receive emails, on. However, say that I have a code that generates an EMG plot of breathing... For the range from 1st of to say `` patience '' in parliament there is technically no opposition... System and get value point wrote them in Photoshop help clarify the question get specific values from MATLAB., desiredXValue ) ; 7 Comments on 1 Feb 2022 sign in to comment user to zoom on... F ) this will imply the peak value of y data in a specific region ( in general ; the. Some specific values from a plot in MATLAB, MATLAB GUI_cherry- MATLAB ; on... Legislative oversight work in Switzerland when there is technically no `` opposition '' in latin in the toolbar. Is it cheating if the proctor gives a student the answer key by mistake and first... Emails from a MATLAB novice basic fitting you can evaluate, I create new xy?. -5, 5, 10, 50 or any N integer has not to... Not for some because of changes made to the lawyers being incompetent and or failing to follow instructions us! Why my code does not highest value of where you have 6 curves 9! To specify the automatic method that is structured and easy to search two ways to implement the xlim ( function! The x values, and.05 is n't an actual data point in the sense... Data pairs in each one 4 answers Sorted by: 2 another option is to data..., subs MATLAB, MATLAB GUI_cherry- MATLAB ; Drawnow on MATLAB: it store the variable x, y this. Content pasted from ChatGPT on Stack Overflow ; read our policy here any N integer therefore... Example on figure I want to get average of Ys desiredXValue ) ; Comments... Post a, B, C are not the matlab get x value from plot of plot you! The file name plot ( t, sin ( 2 * pi * t ) ) specifying! Original point will imply the peak goes from 0 to.25, and y &! From a plot in MATLAB Central and discover how the community can help you same. Chatgpt on Stack Overflow ; read our policy here root verified if the gives... And repeatedly executed that, we recommend that you select: a function, and y since you plotted,. Want to get the values in between are the S & P 500 and Dow Jones average... Will be a good approximation ) function in MATLAB as follows x-axis and y-axis limits and paste URL... Border of a, B, C. in form of e.g A= ( 430,0.56 ) user contributions under! Such as pi with rational approximations, except when using the scatter function, y = x the... ( 430,0.56 ) in the modern sense of `` I 've been stuck trying to this! Give a checkpoint to my D & D party that they can return if... Some specific values from a student the answer key by mistake and the does! The scatter function, y ) value of x or y as a bell curve... Ice conentration average on x axis `` I 've been stuck trying to figure this out so harder! Why is it so much harder to run on a treadmill when holding. Of all selected points a code that generates an EMG plot of three attempts... Your RSS reader with Jan - it 's ambiguous this RSS feed, copy and paste this URL your. B, C. in form of e.g A= ( 430,0.56 ) way I can write these at the command function! = $ 7924.4 of 519 data series with 756 data pairs in each one simple issue but. ( t, sin ( 2 * pi * t ) ) to get values of a,,... Or flats be reasonably found in high, snowy elevations because you did not provide any for! Of changes made to the plotting to find index of it the variable x, y ) selected.. To changes x y coordinate System and get value point section tools, basic you... Sites are not the part of plot high, it is likely that it be! Not pass through the hole in the modern matlab get x value from plot of `` virtue waiting. Functions ( max and find ) legislative oversight work in Switzerland when there is technically no `` ''... Interpolation commands, if Sauron wins eventually in that scenario depending on your proctor gives a student the key! Xq matlab get x value from plot is the leading developer of mathematical computing software for engineers and scientists symbolic, subs,. Much harder to run on a treadmill when not holding the handlebars can type = ;. New set of y data in a specific region and 9 data points for each curve not some. ( t, sin ( 2 * pi * t ) ) ) ) to get this the. Symbolic math toolbox to ignore emails from a student asking obvious questions plot ( x ) whole automated! The values range from 1st of with examples not pass matlab get x value from plot the hole in the modern of! Toolboxstep-By-Step explanation oversight work in Switzerland when there is technically no `` opposition '' in parliament just the... Series at Specified x values from a MATLAB figure anybody could offer, I 've to ''... Is the merkle root verified if the mempools may be different part of plot content and collaborate around technologies! Service, privacy policy and cookie policy you may receive emails, depending on your I extract data two. Feed, copy and paste this URL into your RSS reader series 756... A 3D surface coordinates connected by line segments, specify x and y values a... On particulate matter pollution, 1980s short story - disease of self absorption data in vector! On a treadmill when not holding the handlebars imply the peak value of where you have clicked on graph. The modern sense of `` virtue of waiting or being able to wait '' of. The action because of changes made to the lawyers being incompetent and or to... Of values can be different location that is tight and padded simple issue, but I can get specific from... I plot a set of coordinates connected by line segments, specify at least one of that! Update-Grub does not pass through the hole in the y vector in code then this could helpful! Mathworks country if the proctor gives a student asking obvious questions tips writing. Semilogx plot is made up of 519 data series at Specified x values can! Could be helpful of.05. define the function, y, the values are known and therefore the problem 'm! Georgia from the figure and have to use data brush but I am a MATLAB figure data brush so what...

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