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Legend matlab11/6/2022 ![]() The syntax for the plot() should look like this. In both cases, after you have set the properties, you need to all legend() without any arguments to toggle the legend on. This can be done during the plot() call or using set() on the handle. ![]() Image by author Using the “DisplayName” PropertyĪnother convenient way to add the legend labels is to set the “DisplayName property on the lines as they are plotted. legStr = įor convenience, this method will be used for the rest of the examples. This is most useful when you are programmatically creating the legend string. In addition to specifying the labels as individual character strings, it is often convenient to collect the strings in a cell array. Plot( x, cos( 4x )/3, '^g', 'linewidth', 2 ) Ī legend can be added with the following command. Plot( x, sin( x ), 'rx', 'linewidth', 2 ) The basic syntax is: legend( ‘Description 1’, ‘Description 2’, … ).įor the examples in this section, we will generate a sample figure using the following code. The simplest way to use the function is to pass in a character string for each line on the plot. The legend() function in MATLAB/Octave allows you to add descriptive labels to your plots. Legend matlab code#The source code for the included examples can be found in the GitHub repository. In this article, I cover the basic use of the legend() function, as well as some special cases that I tend to use regularly. Luckily, MATLAB/Octave include the legend() function which provide some flexible and easy-to-use options for generating legends. Check this link for more information about the text() function.Plot legends are essential for properly annotating your figures. You can also put multiple strings in the same box by making a cell array of the strings. Now let’s add a blue line before the text and a black box around the text and the line. For example, let’s plot a cosine wave and put some text on it with font size 18 and red color. You can also change the properties of the text like the font size using the FontSize property and the color using the Color property etc. If you give the coordinates which don’t lie on the plot, you won’t be able to see the text. Simply plot the variable and then select the coordinates from the plot and then use the text() function to place the text on the selected coordinates. You need to pass the x and y coordinate on which you want to place the text. We can also use the text() function to add text to the plot. ![]() Add Custom Legends Using the text() Function in MATLAB Check this link for more information about the legend() function. ![]() You can add as many legends as you want on a figure you just have to add more plots with undefined values on the same figure. In the above code, we added three legends on a cosine wave plot, and you can see they are not related to the plot. For example, let’s add custom legends to a cosine wave plot. You will not see the plots because their values are undefined, but you will see the legends. So to add custom legends that do not have any relation with the graph, you have to add more plots on the figure with undefined values, and then you can add more legends. If you try to add more than one legend using this function, MATLAB will give an error. But the problem is it only adds one legend on one plot. The legend() function is used to add legends to a plot in MATLAB. Add Custom Legends Using the legend() Function in MATLAB Legend matlab how to#In this tutorial, we will discuss how to add custom legends to the plot using the legend() and text() function in MATLAB.
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