Matlab dynamically add legend. However there is a trick to achieve what you want.

Matlab dynamically add legend Learn more about plots, legend, multiple legends Hello, i am looping over different valuesthat effect the plot and i can get a legend that shows how these values relate to the lines shown in the plot. 1. I know how to make this manually by typing the legends in the Matlab code. 3. [~,~,~,names] = legend; legend([names {'my new line name'}]); Another way is to track the names of lines using their DisplayName property, and then rebuild the legend based on the current state of the plot when you add something new. This data is a lot and the names will have to be added in a looped manner. Find the treasures in MATLAB Central and discover how the community can help Dynamic Legend (Updates in every recursion) 1. Its usage is the same as the LEGEND function in MATLAB. Learn more about dynamic legend, plotting, for loop, nested for loop MATLAB nested for loop MATLAB. When I plot the three figures in the loop, I want to include legends which state the column name of each variable within the plot. What I'm Skip to content. Sign in to answer this question. how can I read consecutive structures from a file, when they have different fields, and create for each of them the appropriate fields (title: value)? I am a beginner. Hot Network Questions Meaning of Second line of Shakespeare's Sonnet 66 How do I dynamically add markerfacecolors to Learn more about gscatter, markerfacecolor MATLAB I've discovered that specific verbiage can in fact be added to the legend. > In legen Learn more about adding legends I need to display the mean value of the plot in the legend saying mean = 'c4timeavg(1)' m/s. Learn more about plot, legend, loop, variable and the second line in the plot to be the second eta entry (0. Just adding a legend at the end of the plotting only shows an entry corresponding to the last point plotted. Learn more about legend MATLAB. there's no hold on to add to an existing axes and the X,Y Add legend to a group of lines. h(2) is the handle of a red solid line. How to add legend elements in Matlab in the plot itself. So, I would like to add a legend and give a name to the different curves. fig to png format but the legend changes its place. (I did do some more looking at it and there is no easy way to simply add an additional label to an existing legend that I could come up with anyway that was any Instead of trying to add a second legend, consider using multiple columns within a single legend (see NumColumns legend property). Matlab legend for plotting in loop with different colors. Matlab: Calling a legend in a plot which is created with an ''if'' statement. Any ideas on how to create a dynamically changing legend? The code is included below: AOI_unique=unique(AOI); %for each of those unique AOI's, plot the row vs. In 2017a, when I make some plots and add a legend, then add subsequent plots, the legend is updated with new unwanted entries generically labeled 'data1', 'data2', etc. (See Set and Get Methods for Dynamic Properties. To put it better, I would like Saltar al contenido. and it became instead (displayName for each graph + legend('-DynamicLegend')) As this became a standard (as in no Dynamic Legend is required), it is sufficient to add show legend legend dynamically updated. These parameters include the font size, font style, color, and position of the legend. This is a tricky problem since the legend are somehow connected to the axes. That's mean adding new legend if a checkbox is selected on top of existing one but also removing the legend when checkbox is unselected. Learn more about legend, dynamic, script MATLAB Hi to all, I have a simple script that: # loads a *. I think it is about dynamic adding new fields while reading i-th structure and dynamic removing the fields from the i-1 structure, which remained empty after reading a structure i. Load 7 more related questions Show fewer related questions Sorted by: Reset to default Know someone who can answer? Share a link to this question via email, Twitter, or Facebook. To do so, you can simply use a How to dynamically create and update a legend ?. I thought of the following: I could make the default legend line or marker invisible (can be done with icons, the legend output in the question). therefore i have to plot the different cell names in the legend. Use name-value pairs in the legend command. A possible solution is given here: I want to dynamically assign a legend to a data set with a changing number of vectors (v_1, v_2,,v_n) that I plot against a single vector A. Learn more about legend Hi, my task would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. (I did do some more looking at it and there is no easy way to simply add an additional label to an existing legend that I could come up with anyway that was any how to add legend automatically : for exmaple this is my code . Problem: I want to add a legend to the plot which only contains entries for the Line Solution 1: In fact it is possible to have dynamic structures in Matlab environment too. MATLAB Answers. So I use and get this: But I would like to have this, which I got by using the following I want to do this by adding a second legend (in an own "legend-window") to the figure As far as I know, you can only have one legend-window for one set of axes in MATLAB, so the idea is: add a second (exatly equal) set of axes to the figure So, I would like to add a legend and give a name to the different curves. I am trying to extend this answer of the thread Dynamic Legend (Updates in every recursion) to iterate legend on one graph. How to stop legend from adding 'data1', Learn more about legend . I tried generating figures and then saving them and trying to load that into the axes object in the GUI and it did not work. In most cases, when you use name-value pairs, you must specify the labels in a cell array, such as legend({'label1','label2'},'FontSize',14). This can be confirmed by comparing the figure children to the axes and legend handles. matlab plot legend variable. The plots each have different properties, labels, legends, etc. mat" and so Hi, my task would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. Populating a Legend Dynamically. Or use a map container – sco1. The size of the matrix is 3xN, N is accepted with input. I'm trying to plot a matrix that's returned from a function. the question is how to write the legend without writting every time it manually ? clc;clear all ;close all When you create a plot, you can specify the legend labels by setting the “DisplayName” property as name-value pair. Use this command if you are updating graphics objects in a loop and do not need to see every update The legend has been changed so that by default it updates when data is added to or removed from a plot automatically. Learn more about legend would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. time and column vs. Learn more about boxplot, legend, boxchart Statistics and Machine Learning Toolbox. Then, use lgd with dot notation to set properties, such as lgd. His entries are well-written, and like this one, many of his entries have published example files. The default appearances of these axes are dynamically determined by MATLAB on case-by-case adding legend that is comes from a variable. Matlab legend from cell for plot created with for-loop. How to add legend inside Python's Bokeh circle plot. 36. Amro. How can I make legend like this? Thanks! matlab; plot; matlab adding single legend for multiple data. plot(x, y, 'DisplayName', 'caption'); and then add the legend using the following syntax: Jiro's pick this week is legappend by Chad Greene. Basically, after each plot, you are able to dynamically update I'd like to add two legends to a plot in MATLAB. mat file I load before and I am getting data from. Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! For the R2014b+ syntax, the documentation states [lgd,icons,plots,txt] = legend(). Appending a legend entry at the point in code where you add a plot is a convenient way to keep things organized - otherwise you may have blank or doubled legend entires: If you look at the legend, you'll notice that after we added the ConstantRegion and ConstantLine, there's a lot of padding surrounding the scatter icon. Proposal to cover dynamic legend on one linear graph Hi, my task would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. Legend For more generic fieldnames, @CitizenInsane's answer using dynamic field references is the only way I know of as well. legend creates a legend with descriptive labels for each plotted data series. For the labels, the legend uses the text from the DisplayName properties of the data series. Hot Network Questions Why are there no no-attribution licenses other than "public domain"? What are the maximum bonuses of each type possible? Is it One way to accomplish this is to create the GUI objects at the start, but set their "Visibility" property to "off". Even with the added axis, my second legend eliminates the first. " x = 0:360; axis([0 360 -1 1]) legend dynamically updated. 125k 25 25 gold badges 247 247 silver badges 461 461 bronze badges. You can use the text function to add text to a Matlab figure. My stored variable “ beats_Local_var1_W1” value contains the incremental values (in this case includes 5000, 5500,. Plotting, marking and legend in a loop. You can return the Legend object as an output argument from the legend function, such as lgd = legend. h(4) is the handle of a dot-cross line. legend( arrayfun( @num2str, alpha, Find the treasures in MATLAB Central and discover how the community can help you! Start Hunting! Adding a legend manually for a plot generated by Learn more about legend, plot MATLAB How to dynamically allocate labels to a legend?. 7. Show -2 older comments Hide -2 older comments. I have a tiledlayout of five (three by two) area plots and would like to use the sixth, currently empty, tile to Hi, my task would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. Is this possible in MATLAB? In below code legend got updated each times thereby leaving me with only the last legend but i want is like 1st iteration plot and its legend and next plot and its legends ;thereby all legends sho Learn more about plotting, loop, legend, line MATLAB I'm plotting in a for loop a series of signals and additionally lines to separate segments in the plot. clickableLegend is a wrapper around the LEGEND function that provides the added functionality to turn on and off (hide or show) a graphics object (line or patch) by clicking on its text label in the legend. In addition to the MATLAB command line, the legend can also be updated interactively in the figure itself to include multi-line legend entries. By default, dynamic properties have their NonCopyable attribute set to true. So I am currently working on a code that imports some excel data from any number of files as well as any number of sheets within the excel file. Also, these values may change dynamically for other cases (the number of lines may vary each time). I had to build a GUI in which users could interactively add and remove plot lines from an axes. Matlab multiple entries in one legend line. The one liner looks like this, and would be used within the loop where Slice is defined: I use "line" to plot each point, make a legend for the colors across the top, and then attempt to make separate legend on the right for the markers by placing another axis on top of the first one. 0 Comments. there's no hold on to add to an existing axes and the X,Y So, I would like to add a legend and give a name to the different curves. Then I could alter the legend text position (also in icons). In your case, instead of passing the legend captions to the legend function, you'll need to use them as input arguments to the plot function:. This is what I'm trying to get to work: Use name-value pairs in the legend command. This could change if MATLAB would create comma-separated lists from dynamic fields with cell string arguments, but that is but a dream of mine. This is because if I simply hide the lines, the performance of the program suffers, given that there are so many line options in the real dataset. And Matlab seems not to have option to manipulate the legend marker, color and linestyle. ) Add property set and get access methods. My varibale is stored as "beats_Local_var1_W1" which contains several variable values. I wanted to set the legend dynamically. However, the first thing I thought of when reading it was the text function in Matlab. This allows you to avoid having to hardcode labels later on and more easily supports dynamic legend creation. I've decided to dynamically add and remove line glyphs from the plot as they are selected in the MultiSelect. set the DisplayName property of each item you want to appear in the legend then use the final legend call simply to tell MATLAB "Show the legend now. Today I will expand on that article by explaining the plot legend’s internal graphics hierarchy, how we can Adding variable values into legend. How do I add additional items to an existing dynamic legend? You can add additional items to an Hi, my task would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. mat" and so I create an empty variable and then add cell array elements of strings for each legend entry. See the below example for your reference. Learn more about dynamic legend, plotting, for loop, nested for loop MATLAB So I am currently working on a code that imports some excel data from any number of files as well as any number of sheets within the excel file. Change style @zelanix - thanks for the link and suggestions. Good morning, I'm using MATLAB R2020a Update 2. mat" and so drawnow limitrate limits the number of updates to 20 frames per second. Adding Legend in Matlab. 2. The answers below are correct to suggest moving the legend outside of your for loop. . The name in the legend should be simply the name of the *. mat file with a specific name and which is placed in the project directory # plots a figure according to data/variables within the same *. Let's say I'm plotting a range of voltage values (both experimental and theoretical) and I want to dynamically change the legend of the plot each time from a string such as ("experimental from range vector(a)-vector(b)") where vector just refers to some numeric array. h(3) is the handle of a dot-dash line. This property sets the width of the icon in points. You can add the legend manually and set the color and marker as per your own. 0. Here Any ideas on how to create a dynamically changing legend? The code is included below: AOI_unique=unique(AOI); %for each of those unique AOI's, plot the row vs. However the padding can be adjusted with the new IconColumnWidth property on legend. The text string then could become 'n␣␣␣(as spaces as needed to look OK)␣␣␣legend entry text'. Improve this answer MATLAB legend() Function in for-loop- add entry in every loop SCILAB Adding legend in a plot generated by a loop. Add a comment | 3 Answers Sorted by: Reset to default 2 I tried to do the same before but I was not successful. This happened because the icons in the legend are not exclusively markers. He has over 50 File Exchange entries, and two of his entries have been highlighted (unit converters and ccc) in Pick of the Week. To do so, you can simply use a Here is the code I used to add the legend: legend([h1 h2],{'label1', 'label2'}); 29 2 2 silver badges 7 7 bronze badges. Set it to manual to prevent this: >> set(gca, 'YLimMode', 'manual'); In order to have the limits update automatically to appropriate legend creates a legend with descriptive labels for each plotted data series. Hello, I am struggling on how to create a custom label for a series of plots I am doing at the moment (I know how to change the right axis colour). However, it is not a native Matlab structure. Set the "DisplayName" property to a character To create a dynamic legend in MatLab, you can use the "legend" function with the "sprintf" command to include the variable "i" in the legend at each iteration. g. Is there a way to create an Adding Legend in Matlab. So, in my example I should have a legend with labels "file_001. mat" and so Populating a Legend Dynamically. Notes: 1. How do I add a legend to a boxplot in MATLAB?. Learn more about legend You can pass labels to the legend function in a cell array so you can create that dynamically as e. Help Center; Answers; So I went back to the MATLAB documentation and re-visted the carsmall How to add a legend to a graph with multiple lines. Store your data in a structure and utilize dynamic field references. 5. My question now is : I want the legend to be automatically updated regarding the set of data I have selected using the checkbox. Three years ago I explained how we can use a couple of undocumented hidden properties of the legend in order to add a legend title (the legend object had no Title property back then – this was only added in a later Matlab release, perhaps as a result of my post). 8000), and I would like to reflect the same in the legend. Plotting a variable in a Legend - Matlab. The dynamic legend is another thing, it is mainly to have "DisplayName" to be used, in each graph, instead of using a global legend({'a','b'}). The third output argument (plots) are handles to the I have 9 curves on a plot. import matplotlib. Share. used this one too since I use dynamically named curves (works great to plot a standard deviation but To create a dynamic legend in MatLab, you can use the "legend" function with the "sprintf" command to include the variable "i" in the legend at each iteration. FontSize = 14. The problem was that the legend needed to be kept in constant sync with the currently-displayed plot lines Diff conditions: how to clear dynamic legends at the end of each iteration; how to remove fitted linear lines at the end of each iteration. asked Jun 28, 2012 at It currently has a very good running speed, but I cannot figure out how to add a legend to the component plot without slowing down performance. I have data that I am plotting using a for loop. Even if I turn auto-update off and only create the legend for the first set of points plotted, it somehow still finds a way to slow down my program significantly as it continues to run. h(1) is the handle of a blue solid line. Many of you may know that the Hi, my task would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. Graph Legend MATLAB For Loop. the question is how to write the legend without writting every time it manually ? MATLAB Graphics Formatting and Annotation Labels and Annotations Legend. DisplayName is what legend() uses to auto-generate the line names when you call the simple "legend show" form. MATLAB scatter plot legend. Matlab dynamic legend / legend "hold on" like behavior. For example, you don't need to set the x-/y-labels on each iteration of the loop, just once at the end of the loop when you have plotted all your data. Matlab plot legend automation. If it has been fewer than 50 milliseconds since the last update, or if the graphics renderer is busy (either with the previous change or because it is initializing), then drawnow skips the new update at that time. I want to add legend to the right of the colorbar, and I tried doing so using the legend function, but it is not shown using the text function places it outside the printanle area. You can dynamically update the "velocit ies" and "height s I want to dynamically assign a legend to a data set with a changing number of vectors (v_1, v_2,,v_n) that I plot against a single vector A. Hi all, I would like to add variable names to matlab plot 'legends'. Learn more about dynamic legend, plotting, for loop, nested for loop MATLAB for loop, nested for loop MATLAB. Matlab: Need to create a legend dynamically for plotted points. Ugh, do not use eval like this. 3928)? How can I do this dynamically so that it is automated if I change the values in eta or if I make it have more numbers? 2 Comments MATLAB Graphics Formatting and Annotation Labels Add flexible legend in MATLAB. I have a loop which processes three tables. Add variable names to figure legends . Learn more about legend, plot, plotting, for loop, data I want to dynamically assign a legend to a data set with a changing number of vectors (v_1, v_2,,v_n) that I plot against a single vector A. " x = 0:360; axis([0 360 -1 1]) I had a similar problem, to create a legend, but not knowing how many plots I would have. The legend automatically updates when you add or delete data series from the axes. Not that the actual name matters, but moving the position of output icons is a bit confusing. If you copy an object containing a dynamic property, the dynamic property is not copied. I looked at answers using the "DisplayName" property while plotting, but I didn't want to rewrite all of my plotting, and in any case ewasn't sure how to use it with plotyy (probably using hax = plot / semilogy construct). If the DisplayName property is empty, then the legend uses a label of The gscatter function does contain the ability to add colors (it's in the part you have as '' before the marker type). Customized Legend in Matlab. This is the cleaner, easier approach. Then, when the user clicks on a button, you set the "Visibility" property back to "on". I have made a graph in Matlab which generates points and plots a red cross if the point is inside a specified box, and a blue circle if it is outside. Add custom legend without any relation to the graph. How to display legend in I am creating a graph iteratively from various data sets, and I try to add legend to it, but it fails. mat" and so on (according to 'h' range). How to dynamically allocate labels to a legend?. This is a rather undocumented feature but it does work very well. Use the Legend object. However there is a trick to achieve what you want. How can I do this? matlab; plot; legend; matlab-figure; Share. Learn more about matlab legends plots MATLAB. MATLAB provides the legend() function to add legends to a set of axes, which makes legend-making easy and efficient. (See Objects with Dynamic Properties. MATLAB: Adding a legend to the bottom of a figure without changing figure width or resizing plots. If the DisplayName property is empty, then the legend uses a label of the form 'dataN'. Vote. On my screen it looks like the fol When I call the legend() functions as legend('', 'cosine'); instead of adding the empty third parameter, indeed the third green line is removed from the legend. Note: I Learn more about legend, string MATLAB I have the following string: Now I want to use this string to produce a legend to my figure. I would just add that you should move all of your plotting commands except plot outside of the loop. The y-axis limits will rescale automatically if the YLimMode of the axis is set to auto. legend dynamically updated. To put it better, I would like to "append" a label to my legend every time I update my plot. Improve this question. I don't understand what you are doing creating the full legend within the how to add legend automatically : for exmaple this is my code . I want to dynamically assign a legend to a data set with a changing number of vectors (v_1, v_2,,v_n) that I plot against a single vector A. mat", "file_002. Tags plot; hold on; The built-in Matlab legend function has a very useful semi-documented feature for automatic dynamic update, which is explained here. So, I would like to add a legend and give a name to the different curves. I want to add a Legend for each of the signal but when I add the legend it adds the lines too Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, service or employer brand; OverflowAI GenAI features for Teams; OverflowAPI Train & fine-tune LLMs; Labs The future of collective knowledge sharing; About the company The "legend" command places the legend in the CurrentAxis unless an axis handle is explicitly specified as one of the inputs to the command. Chad is no stranger to MATLAB Central. You can pass labels to the legend function in a cell array so you can create that dynamically as e. Hot Network Questions Adding a global legend to a tiledlayout. Dynamic approach. Edit: Here is a flexible way to auto-generate the "filter" label from the Slice. ) Listen for dynamic property events. We can concatenate = between the headerNames and table values (converted using num2str in case there are numeric values), and then use strjoin to generate our label separated by , for each heading. 9. fig file that I am trying to save . I met with an issue where when I want to add legends to numerous graphs with the legend naming like : "36", "42" as they represent the velocity. 'MarkerFaceColor' has to be adjusted separately; you can define a list of colors initially and loop over them. x = linspace(0,pi Your question is a little unclear. The vectors v_n are stored in a Hi, my task would be to have a legend which is update dynamically as I loop over some data extracted from different files and I add them to a same plot, for instance. Currently this is what I have as code when the GUI is opening: How to dynamically allocate labels to a legend?. I dont know how to add a label for each graph to form a legend. It's use is >> text(x, y, str); where x and y are the coordinates in Learn more about legend MATLAB. Hi Paul, thanks for the answer. 3 different colors x 3 (solid lines, dotted lines etc). However, the number of plots are not predetermined and is added according to the user's content. In your case, the legend is being positioned at the 'NorthEast' location of the lower axis because the lower axis becomes the CurrentAxis by default. However Instead of crowding my legend with 9 entries, I'd like to depict each color - their meaning (example red - 30-70Hz, blue - 20-50hz etc) and separately the meaning of dotted lines (training set), solid lines (test set) etc. " x = 0:360; axis([0 360 -1 1]) Solution 1: In fact it is possible to have dynamic structures in Matlab environment too. there's no hold on to add to an existing axes and the X,Y A possible way to do it would be first storing in an array h four handles corresponding to four sample lines in the following way:. A drawback of the above is that the legend will cease to be aligned if the figure is resized. Create a custom legend . The plotting works fine but the generation of the legend I have found tricky to get right. If I initially make the plots using the axes object in the GUI as the target axes I can't save the plot and the legends, etc. MATLAB legend() Function in for-loop- add entry in every loop. To put it The built-in Matlab legend function has a very useful semi-documented feature for automatic dynamic update, which is explained here. Populating Matlab legend How to dynamically create and update a legend ?. I perform the battery tests for two different temperatures-->i at each different temperatures, there are different cells (whose names ans details are stored in folder called cell list) under test, that gives j. Find more on Legend in Help Center and File Exchange. Which version of Matlab are you using? Running the code on mine (2014b) gives me what you want - no I want to add legend dynamically on each subplot & the number of subplot is not predefined, it may be 10 or 20 or 25 like that. Since you will be creating 2 axes, hence there will be 2 legends. To prevent this behavior, set the legends "AutoUpdate" property. png from is attached to the post. pyplot as plt # Subplots are organized in a Rows x Cols Grid # Tot and Cols are known Tot = number_of_subplots Cols = number_of_columns # Compute Rows required Rows = Tot // Cols # EDIT for correct number of rows: # If one additional row is necessary -> add one: if Tot However it will only display the legend for the first plot. Sign in to comment. The . Is there a way of adding extra legend entries, so that the final plot looks really nice and organised? Matlab dynamic legend / legend "hold on" like behavior (1 answer) Assemble Legend for Many Curves (1 answer) Closed 4 years ago. Recently, I had to write a graph traversal script in Matlab that required a dynamic stack. mat file I load before and I am getting data Appending entries to a legend is not possible, so you have to construct a new legend using data from the current legend. there's no hold on to add to an existing axes and So, I would like to add a legend and give a name to the different curves. Each table has ten columns (in addition, each column includes column names). Search Answers Answers. Commented Dec 14, 2015 at Add subsequent plot to legend in matlab. Suppose you know total subplots and total columns you want to use:. This answer is what is inspiring this post: Dynamic Legend (Updates in every recursion). When I want to create my Legend, I don't have access to all the handle of my figures. But that doesn't solve my problem, because the undesired red line stays visible. Follow edited Jun 29, 2012 at 0:53. I created a boxplot and would like to add a legend to it, but when I call legend I get the following warning message and there is no legend in the plot figure: Warning: Plot empty. matplotlib scatter plot add legend without loop and without using seaborn. Then create 2nd axes and then move the third line to the 2nd axes. Learn more about tiledlayout, legend MATLAB. Your Answer Reminder: Answers generated by Another possibility is to use the dynamic legend (not so-well documented) feature of MATLAB. Add subsequent plot to legend in matlab. Thanks Azzi this works, but in my case this will go inside a function which will be executed for each plot, then ' hl=legend('leg1') ' should be executed only the first time that the function is executed. Thank you so much for the help! I incorporated this in my code but it is not working completely for me. and then feeding them into legend alongside the desired strings like so: I am trying to save figure from . Here is an With the data I want to plot the data taken from the files, I want a legend to be dynamically populated with the information as it is going through the loop as it is running. More Answers (2) Christoforos Kanavakis on 23 Mar 2018. Firstly, plot all line on the same axes, then run legend. advanced customization of legend markers in matlab. ehpqz ujhd gaterdg vfyhy ugox njybxbhcb prgep rnrdpun zfyfdja dhmt