. Add a new light switch in line with another switch? I need to know what the x values are at these points and get the difference between the two, thus giving me the duration. Unable to complete the action because of changes made to the page. Call the command for function plot with the file name plot (x,y). clc; clear all; Fs = 150; % Sampling frequency. I'm sorry, I tought that the code was self explanatory. I just wrote them in Photoshop help clarify the question. PPVAL(PP,Xq) is the same as, You may receive emails, depending on your. Connect and share knowledge within a single location that is structured and easy to search. Zooming a portion of figure in a figure-Matlab. your location, we recommend that you select: . Asking for help, clarification, or responding to other answers. 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. I don't have the x values, and .05 isn't an actual data point in the y vector. Check out the. 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. Define x, by specifying the range of values for the variable x, for which the function is to be plotted. kedarps 851 Reference: stackoverflow.com POPULA POST I have a matrix, where the first row is my x direction and the first column is my y direction. C is one point of x'ay' coordinate. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. It is working, I've already do that but I need the flow depth numerically (y) at the end of my channel (x=xmax). offers. Why do American universities have so many gen-eds? Why do American universities have so many gen-eds? 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 . Just set the value for x_low, % x_high, and y. Great explanation. 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 . Therefore, I want to give a commend that orders to give the y-value at certain x-value. However, say that I have plotted a graph with plot (t, sin (2*pi*t)). Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide, What are those points (A, B, C) etc? Reload the page to see its updated state. A,B,C or not the part of Plot. 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]; 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. Like in sample pictures, I want to get values of A, B, C. in form of e.g A= (430,0.56). https://in.mathworks.com/matlabcentral/answers/2951-extracting-data-series-from-fig-file#comment_2357085, You may receive emails, depending on your. The peak goes from 0 to .25, and what I need is the duration of this peak with a threshold of .05. 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. Share Where does the idea of selling dragon parts come from? 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? 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. Sign in to comment. Toggle Sub Navigation. How can I extract data in a vector from semilogx figure? offers. Find centralized, trusted content and collaborate around the technologies you use most. Then just run mean (ans (:,2)) to get average of Ys. The rubber protection cover does not pass through the hole in the rim. Unable to complete the action because of changes made to the page. PP may then, evaluated via PPVAL. Asking for help, clarification, or responding to other answers. When would I give a checkpoint to my D&D party that they can return to if they die? Define the function, y = f (x). 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? Find centralized, trusted content and collaborate around the technologies you use most. how to create different matrices? Then select in menu Tools-Brushing-Create new variable. Not the answer you're looking for? . Try this code, Its working for me Code is according to Time and Y figure. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. >> 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. 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. 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'. thank u very muchi am so happy to know such helpful men like u , Jan Simon and Ilham Hardy. So basically what this means is that since this is a bell shaped curve, there are 2 instances where y = .05. To learn more, see our tips on writing great answers. To plot the graph of a function, you need to take the following steps . Automatic xlim () selection: In this method, we specify the limit for the current axis or chart by using an automatic way. I have added some comments. To get the number of values above threshold = 0.05 you can type. Plot Multiple Data Series at Specified x values It will just replace 1-9 with your array. 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. Explain why my code does not do what you want. 1. Did neanderthals need vitamin C from the diet? Isn't that exactly what I just showed you how to do? So, How to convert C position to xy coordinate?? 4 Answers Sorted by: 2 Another option is to use data brush. % set it equal to y_i. Are defenders behind an arrow slit attackable? Learn more about collect, symbolic, subs MATLAB, Symbolic Math ToolboxStep-by-step explanation. offers. . Thanks for contributing an answer to Stack Overflow! x_high=100; %the highest value of x that the for loop could possibly output. Not the answer you're looking for? Cooking roast potatoes with a slow cooked roast. 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. 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. Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? I have two excel files, the script extracts the data from the 2 files. Is there any way I can do this, or is this impossible? This requires user to zoom in on generated plot. clc; clear all; Fs = 150; % Sampling frequency. Something can be done or not a fit? Is this possible? 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? This variable will contain X and Y coordinates of all selected points. To comment a single or two lines of code, we can use the % character . MATLAB plots every column as a seperate curve. Choose a web site to get translated content where available and see local events and rev2022.12.9.43105. After that, we need to enable the auto limit selection. 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. Otherwise, you could look at the interpolation commands, if you want the whole process automated and repeatedly executed. With the first you could write. I want to get some specific values from a Matlab Figure. So, that means you have 6 curves and 9 data points for each curve. Vai al contenuto. How to plot two histograms together in R? Click brush icon on the figure toolbar and make a selection. Help us identify new roles for community members, Proposing a Community-Specific Closure Reason for non-English content. Basically, there are two ways to implement the xlim () function in Matlab as follows. Find the treasures in MATLAB Central and discover how the community can help you . How can I get the x and y coordinates of this matrix to create a 3D surface? sites are not optimized for visits from your location. 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. Add a new light switch in line with another switch? If you plot x versus y, the values are known and therefore the problem has not relation to the plotting. If the resolution of your data is high, it is likely that it will be a good approximation. Like in sample pictures. Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. Other MathWorks country You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. 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 () % 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. 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. Thanks for contributing an answer to Stack Overflow! 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 Haupt-Navigation ein-/ausblenden . Sudo update-grub does not work (single boot Ubuntu 22.04). Why does the distance from light to subject affect exposure (inverse square law) while from subject to lens does not? Define the function, y = f (x) Call the plot command, as plot (x, y) Following example would demonstrate the concept. If you choose to interpolate tou can construct a new set of points, and interpolate over that set. 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 A,B,C are not the part of Plot. Making statements based on opinion; back them up with references or personal experience. But perhaps you have a Figure file and lost the x and y values. 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. sites are not optimized for visits from your location. answer should be 4th position. Extract X,Y data from scatter plot. Drawnow on Matlab: It store the figure or store the variable? Since you are setting your marker color, you probably noticed that (each series is assigned a different color Learn more about matrices, plot MATLAB. 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. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. I would really appreciate any help anybody could offer, I've been stuck trying to do this for the past 6 hours. That means your semilogx plot is made up of 519 data series with 756 data pairs in each one. 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. Passer au contenu. 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. I just wrote them in Photoshop help clarify the question. The length of the input values (Graph Values) can also change every time. Introduction to Matlab Plot Multiple Lines. Based on Weiter zum Inhalt. I just Wrote them in Photoshop to make Understand the Question. Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? Why is it so much harder to run on a treadmill when not holding the handlebars? (TA) Is it appropriate to ignore emails from a student asking obvious questions? In order to find the maximum value, you need to employ some MATLAB functions (max and find). please find the attachment; in the figure, there are two data values. But you did not explained the code. t = -0.5:1/Fs:0.5; % Time vector of 1 second. Furthermore, you probably want the wrong thing. 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. matlab ,MATLAB GUI_cherry- matlab ; Find the treasures in MATLAB Central and discover how the community can help you! Please help me Guillaume on 29 Aug 2016 @Pooja Patel Theme Copy value = find (Y == Y) % This code solves for x given a value of y. How can I get it? You already have x, and y since you plotted it, so there's no need to extract. How do I find this if the size of matrix is very big.. Browse other questions tagged, Where developers & technologists share private knowledge with coworkers, Reach developers & technologists worldwide. Is it cheating if the proctor gives a student the answer key by mistake and the student doesn't report it? By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. Search Answers Clear Filters. 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. rev2022.12.9.43105. Accelerating the pace of engineering and science. Accepted Answer Star Strider on 8 Nov 2014 or flow_depth = y (end,:); The first line intersects the set of points that follow x1 with the set of points that precede x2, and the return the indices. Getting an x values from a plot in MATLAB. The problem I'm having is I don't know how to get the x values. I have a code that generates an EMG plot of three breathing attempts. . Find the treasures in MATLAB Central and discover how the community can help you! 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. so if i want, You may receive emails, depending on your. I want to get values of A, B, C. in form of e.g A=(430,0.56). Some explanation would improve this answer. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. 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. How to say "patience" in latin in the modern sense of "virtue of waiting or being able to wait"? what if you want to extract data of two lines ? Theme Copy yDesired = interp1 (x,y, desiredXValue); 7 Comments on 1 Feb 2022 Sign in to comment. But i cannot seem to do that when the dialog box prompt comes up. how i can write these at the command window ? 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. I want to get some specific values from a Matlab Figure. Unable to complete the action because of changes made to the page. Connecting three parallel LED strips to the same power supply. Accelerating the pace of engineering and science. Please explain this by editing the original questions. Why did the Council of Elrond debate hiding or sending the Ring away, if Sauron wins eventually in that scenario? thank u alot ,,, i found ur answer very useful,,,,,,, i only wanted to explain my question. To learn more, see our tips on writing great answers. We do not currently allow content pasted from ChatGPT on Stack Overflow; read our policy here. How could my characters be tricked into thinking they are on Mars? I need to plot the water level for each specific year on y axis and ice conentration average on x axis. 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. How is the merkle root verified if the mempools may be different? 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. such a simple issue, but I am a Matlab novice. x_low=-100; %the lowest value of x that the for loop could possibly output. Why is this usage of "I've to work" so awkward? 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. 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? Theme. Effect of coal and natural gas burning on particulate matter pollution, 1980s short story - disease of self absorption. Note: On every execution of the code input values can be different. 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? You can leave default variable name ans. Lets normalise our X values so the data ranges between -1 and 0. The script works for specific years but not for some because of not same vector size. your location, we recommend that you select: . In this method, we need to specify the automatic method that is tight and padded. By clicking Post Your Answer, you agree to our terms of service, privacy policy and cookie policy. if you plot, in section tools,basic fitting you can evaluate, I agree with Jan - it's ambiguous. To plot multiple sets of coordinates on the same set of axes, specify at least one of X or Y as a matrix. The number of values can be 3, 5, 10, 50 or any N integer. To plot a set of coordinates connected by line segments, specify X and Y as vectors of the same length. Note that MATLAB represents irrational numbers such as pi with rational approximations, except when using the symbolic math toolbox. plot (X,Y) creates a 2-D line plot of the data in Y versus the corresponding values in X. Running the for loop, ends up in having created a slope matrix, with 3 values inside, which reprenset 3 different slopes. To subscribe to this RSS feed, copy and paste this URL into your RSS reader. 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. ? and what if i want to take range of values form Point A to B ? The script finds the values range from 1st of . Enter the formula in terms of x inside the for loop and. Doing this will give you equal spacing. from the axes (graph) at all. 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. Making statements based on opinion; back them up with references or personal experience. A,B,C are not the part of Plot. or in opposite, if C is one point of xy coordinate, how to get position of C in x'y' coordinate? MathWorks is the leading developer of mathematical computing software for engineers and scientists. Following is described of my question. t = -0.5:1/Fs:0.5; % Time vector of 1 second. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Are they actually plotted as a separate series? like what is "xi"? In the first case consider, that numerical comparisons are bounded by the numerically limited precision: % Linear interpolation [EDITED, not "linspace"]. You can also select a web site from the following list: Select the China site (in Chinese or English) for best site performance. your location, we recommend that you select: . 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. MaxVelocity = max (Y) This will imply the peak value of your velocity profile. I'm using the ode45 (x,y) for solve an open channel flow problem (plot the surface profiles). See that section for details. Other MathWorks country Other MathWorks country i need the x and y values of this data. Skip to content. I first plot data using the scatter function, and then set the x-axis and y-axis limits. 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'); Appealing a verdict due to the lawyers being incompetent and or failing to follow instructions? Copy. Reload the page to see its updated state. 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 Find the treasures in MATLAB Central and discover how the community can help you! Can a prospective pilot be negated their certification because of too big/small hands? 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. So far you just know the max value. MATLAB Answers. Start Hunting . The plot is created over the default interval [-5, 5]. Learn more about scattered data, extract value, plot . 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). Reload the page to see its updated state. How I can get specific values from Matlab Figure. Connect and share knowledge within a single location that is structured and easy to search. x-axis data is 1-9 because you did not provide any data for MATLAB to plot with. 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). Did the apostolic or early church fathers acknowledge Papal infallibility? MATLAB will plot each column as its own series. Navigazione principale in modalit Toggle . But if you want to find corresponding time value for max velocity, first you need to find index of it. The values in between are the velocities of each point. 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? So I have a set of y data in MATLAB, and the plot comes out as a bell shaped curve. Find the treasures in MATLAB Central and discover how the community can help you! How many transistors at minimum do you need to build a general-purpose computer? will give you an under-approximation (in general; unless the data set is artificial) of the duration you are seeking. MathWorks is the leading developer of mathematical computing software for engineers and scientists. Would salt mines, lakes or flats be reasonably found in high, snowy elevations? How can I plot a pattern of random points in a specific region? (interpolation etc..) How can I do that? Site design / logo 2022 Stack Exchange Inc; user contributions licensed under CC BY-SA. More Answers (3) How does legislative oversight work in Switzerland when there is technically no "opposition" in parliament? Man, I just spent so long trying to figure this out. Sudo update-grub does not work (single boot Ubuntu 22.04). 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). Choose a web site to get translated content where available and see local events and The output of our example will be as shown below: add $6800 and $1142.4 = $ 7924.4. Issue Plotting 2 different Values. How to changes X Y coordinate System and get value point? Ready to optimize your JavaScript with Rust? By clicking Accept all cookies, you agree Stack Exchange can store cookies on your device and disclose information in accordance with our Cookie Policy. 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. If you did that unwise thing, then it's possible to extract your data from the graph, which has, in effect "stored" it. 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. 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 I guess the most simple way is to zoom in and see the value, but there are about 1 thousand data to work with. Based on Learn more about plot, graph, input prompt, prompt MATLAB . 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 comment. 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. answer should be 4th position. 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. 1. fplot (f) This will plot the graph defined by the function y = f (x). If you want to get the values of unknown points from the figure and have to use in code then this could be helpful. Ready to optimize your JavaScript with Rust? Matlab has the ginput for getting the (x,y) value of where you have clicked on the graph. In fact I showed you how to do it two different ways. The number of values can be 3, 5, 10, 50 or any N integer. Now, I create new XY coordinate with a is original point. Counterexamples to differentiation under integral sign, revisited, Penrose diagram of hypothetical astrophysical white hole. Zooming in on generated graph in order to get. Are the S&P 500 and Dow Jones Industrial Average securities? 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 . 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. Copy. Accelerating the pace of engineering and science. As an example on figure i want to find the time of the 68.5 m/s ?? sites are not optimized for visits from your location. 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? How to smoothen the round border of a created buffer to make it look more natural? Respected Image Analyst gave the best answer; I am just simplifying it with examples. Copy. 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 ? Let us plot the simple function y = x for the . Based on How do I find this if the size of matrix is very big.. did anything serious ever run on the speccy? The question is not clear. Is the EU Border Guard Agency able to tell Russian passports issued in Ukraine or Georgia from the legitimate ones? 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; Sign in to answer this question. 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