legend places a legend on various types of graphs (line plots, bar graphs, pie charts, etc.). To make a legend for lines which already exist on the axes (via plot for instance), simply call this function with an iterable of strings, one for each legend item. Learn more about legend, plotting legend positions the legend based on a variety of factors, such as what objects the legend obscures. . The legend() method adds the legend to the plot. Introduction to MATLAB Plot legend. legend_handle = legend The location property applies to colorbars and legends, but not to axes. legend(legend_handle) adds a box to the legend in the current axes or the axes specified by axes_handle. Legend properties control the appearance and behavior of a Legend object. legend('sin(a)','sin(2*a)') Plot two lines. Graphs are the graphical form of the explained data in the data set. Seven examples of how to move, color, and hide the legend. Create a figure with a line chart and a scatter chart. The following also demonstrates how transparency of the markers can be adjusted by giving alpha a value between 0 and 1. orientation can be vertical (the default) or horizontal. ALL RIGHTS RESERVED. % Plot random data in each subplot. 用Matlab画图时，有时候需要对各种图标进行标注，例如，用“+”代表A的运动情况，“*”代表B的运动情况。 legend函数的基本用法是： LEGEND(string1,string2,string Code: a = linspace(0,2*pi); y = sin(a); plot(a,y) hold on y1 = sin(2*a); plot(a,y1) legend('sin(a)','sin(2*a)') Output: In the above example, the legend for the two lines is shown in the top right corner of the plot, one line depicting the values for the function sin(a) and the other line depicting the values for the function sin(2a). Create a figure with a line chart and a scatter chart. plot(a,y) legend(...,'Location',location) any help will be greatly appreciated :) 转自：http://blog.sina.com.cn/s/blog_7db803c10102weyk.html Matlab中legend默认的位置在NorthEast，如图所示： 然而，我们却可以通 For labels, it uses one of the properties of data series which is known as DisplayName. [legend_h,object_h,plot_h,text_strings] = legend(...) The axes of a plot are a separate object in Matlab, and can be controlled by using set, get and other commands. plot(a,y1) but as you can see i cannot add a string to an array does anyone have a suggestion on how to add legends to plots made using a loop? Specify the legend labels as inputs to the legend function. Learn more about plot, legend MATLAB legend('sin(a)','sin(2*a)'). plot(a,y1) The legend updates automatically whenever we include any new or remove data series from the current axes. This ResizeFcn attempts to keep the legend the same size. legend('boxon'), legend(axes_handle,'boxon') MATLAB displays only one legend per axes. hold on Specify the legend labels as inputs to the legend function. They are mainly used in graphs, charts or spreadsheets. Cree una figura con una gráfica de líneas y una gráfica de dispersión. This can be done by using the legend property ‘DisplayName’ and the label of the legend as its value. legend(li_object,M) Is it possible to define, that the legend will have an calculated data in it? In this article, we will learn how to put Legends to the plots created in MATLAB. hold off. Especifique las etiquetas de leyenda como argumentos de entrada para la función legend. toggles the legend on or off. Specify the legend labels during the plotting commands by setting the DisplayName property to the desired text. Añada una leyenda con una descripción para cada gráfica. By changing property values, you can modify certain aspects of the legend. Plot legend below the plot. x = linspace (0,pi); y1 = cos (x); plot (x,y1, 'DisplayName', 'cos (x)' ) hold on y2 = cos (2*x); plot (x,y2, 'DisplayName', 'cos (2x)' ) hold off legend. If no legend exists for the current axes, one is created using default strings. How to modify the legend in MATLAB ® graphs. Luckily, MATLAB/Octave include the legend() function which provide some flexible and easy-to-use options for generating legends. In this example, we have added another line to the existing line as mentioned in the above example. Related course. Legend when plotting with while. Using one of the ...Outside values for location assure that the colorbar will not overlap the plot, whereas overlaps can occur when you specify any of the other cardinal values. These handles enable you to modify the properties of the respective objects. You can move the legend by pressing the left mouse button while the cursor is over the legend and dragging the legend to a new location. Legends can be used in various graphs or charts like a bar graph, line graph, pie chart, etc. hiding legend in plot . Adding a Legend to a Graph for more information on using legends. In the above example, the legend for the two lines is shown in the top right corner of the plot, one line depicting the values for the function sin(a) and the other line depicting the values for the function sin(2a). legend associates strings with the objects in the axes in the same order that they are listed in the axes Children property. creates a legend with the legend items arranged in the specified orientation. ... Bug and workaround in timeseries plot – Matlab's internal hgconvertunits function has a bug that affects timeseries plots. displays the legend for the axes specified by axes_handle. adds a legend containing the rows of the matrix string_matrix as labels. end. displays a legend on the plot containing the objects identified by the handles in the vector h and using the specified strings to label the corresponding graphics object (line, barseries, etc.). There are various values that can be assigned to the property like: a = linspace(0,2*pi); This function is useful for labeling multiple plots on the same axes. The default string for an object is the value of the object's DisplayName property, if you have defined a value for DisplayName (which you can do using the Property Editor or calling set). The legend function in Matlab creates a legend in the current axes of the current figure. y = sin(a); a = linspace(0,2*pi); with no arguments refreshes all the legends in the current figure. legend('show'), legend(axes_handle,'show') MATLAB provides us with plenty of functionalities, useful in various computational problems. legend(‘off’). legend installs a figure ResizeFcn, if there is not already a user-defined ResizeFcn assigned to the figure. Add a legend with a description for each chart. Especifique las etiquetas de la leyenda como entradas para la función legend. >> Legend=zeros(1,10); >> Legend(1,8) = 'test' Subscripted assignment dimension mismatch. legend('string1','string2',...) creates a legend for legendinfo objects li_objects with strings string1, etc. plot ([1, 2, 3]) ax. legend associates strings with the objects in the axes in the same order that they are listed in the axes Children property. The code in … legend('off'), legend(axes_handle,'off') leg1=legend(legend); ... here's an updated solution for Matlab r2020b or later. Scatter plots with a legend¶. . plot(a,y2,'DisplayName','sin(3a)') To plot two lines and display the legend in the present chart. a = linspace(0,2*pi); removes the box from the legend in the current axes or the axes specified by axes_handle. Hadoop, Data Science, Statistics & others. As we have learned in our previous articles, we can create vector plots in MATLAB using the ‘plot’ function. makes the legend in the current axes or the axes specified by axes_handle invisible. 그런 다음, 범례를 추가합니다. ... MATLAB displays only one legend per axes. I have a for loop and calculate some data, which I plot at the end of each loop. In the above example, another line is added to an existing plot using the legend label in the plot command as shown in the highlighted part. legend(...,'Orientation','orientation') MATLAB displays only one legend per axes. THE CERTIFICATION NAMES ARE THE TRADEMARKS OF THEIR RESPECTIVE OWNERS. For example: ax. legend(h,string_matrix) Location is one of the main property of the legend which decides the location of the legend. See the last line example below, which demonstrates setting a legend's Interpreter property See the documentation for Text Properties for additional details. Plot legend customization – Matlab plot legends and their internal components can be customized using a variety of undocumented properties that are easily accessible. Add a legend to a graph showing a sine and cosine function: In this example, the plot command specifies a solid, red line ('-r') for the cosine function and a dash-dot, blue line ('-.b') for the sine function. legend(h,'string1','string2',...) displays a legend on the plot containing the objects identified by the handles in the vector h and using the specified strings to label the corresponding graphics object (line, barseries, etc.). The location string can be all lower case and can be abbreviated by sentinel letter (e.g., N, NE, NEO, etc.). legend positions the legend based on a variety of factors, such as what objects the legend … We can also decide the visibility, orientation of the legend which can be horizontal and vertical depending on the requirements. removes the legend in the current axes or the axes specified by axes_handle. To plot another line and specify the labels of the legend using DisplayName property of the legend in the plot command. Learn more about plotting MATLAB x = linspace (0,pi); y1 = cos (x); plot (x,y1, 'DisplayName', 'cos (x)' ) hold on y2 = cos (2*x); plot (x,y2, 'DisplayName', 'cos (2x)' ) hold off legend. Plot legend below the plot. Legends are the way of adding them to the graph to explain the displayed data that have different properties and forms. legend('toggle'), legend(axes_handle,'toggle') By closing this banner, scrolling this page, clicking a link or continuing to browse otherwise, you agree to our Privacy Policy, New Year Offer - MATLAB Training (3 Courses) Learn More, 3 Online Courses | 1 Hands-on Project | 8+ Hours | Verifiable Certificate of Completion | Lifetime Access, R Programming Training (12 Courses, 20+ Projects), All in One Data Science Bundle (360+ Courses, 50+ projects). . y2 = sin(3*a); Plot two lines. 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). legend('hide'), legend(axes_handle,'hide') 두 개의 선을 플로팅합니다. In this article, I cover the basic use of the legend() function, as well as some special cases that I tend to use regularly.. There are many other properties that are associated with the customization of the legend in Matlab. legend(target,___)给特定轴添加图例； % Create a figure with two subplots and return the two Axes objects, ax1 and ax2. Use dot notation to refer to a particular object and property: plot (rand (3)) lgd = legend ('a','b','c'); c = lgd.TextColor; lgd.TextColor = 'red'; makes the legend in the current axes or the axes specified by axes_handle visible. ts me again with an maybe simple question for you. y = sin(a); Learn more about plot, plotting, legend, multiple graphs, legend plot uses location to determine where to place the legend. When plotting filled areas (patch or surface objects), the legend contains a sample of the face color next to the text label. Learn more about legend, plotting You may also have a look at the following articles to learn more –. returns. By default, the legend annotates the current axes. Please find the below examples that explain the use of legends in Matlab: To plot two lines and display the legend in the present chart. returns the handle to the legend on the current axes or empty if no legend exists. Such as loop one z=1, loop two z=2.5 and so on. The properties that legends do not share with axes are: You can use a legend's handle to set text properties for all the strings in a legend at once, rather than looping through each of them. Legend Position on a plot. This is the same as legend(string_matrix(1,:),string_matrix(2,:),...). legend legend('sin(a)'), a = linspace(0,2*pi); This has been a guide to Matlab Legend. There are various properties of the legend in Matlab which are discussed below. y = sin(a); Then, add a legend. y = sin(a); In this article we will show you some examples of legends using matplotlib. View MATLAB Command. legend(li_object,string1,string2,string3) DisplayName 속성을 원하는 텍스트로 설정하여 플로팅 명령 중에 범례 레이블을 지정합니다. legend(string_matrix) Otherwise, legend constructs a sting of the form data1, data2, etc. creates a legend of legendinfo objects li_objects where M is a string matrix or cell array of strings corresponding to the legendinfo objects. displays a legend in the current axes using the specified strings to label each set of data. x = linspace (0,pi); y1 = cos (x); plot (x,y1, 'DisplayName', 'cos (x)' ) hold on y2 = cos (2*x); plot (x,y2, 'DisplayName', 'cos (2x)' ) hold off legend. Here we discuss the introduction and working of Matlab Legend with examples. The source code for the included examples can be found in the GitHub repository. For each line plotted, the legend shows a sample of the line type, marker symbol, and color beside the text label you specify. legend コマンドで名前と値のペアを使用。ほとんどの場合、名前と値のペアを使用する際は、legend({'label1','label2'},'FontSize',14) のように cell 配列でラベルを指定しなければなりません。 Legend オブジェクトを使用。 © 2020 - EDUCBA. Learn more about plotting MATLAB y1 = sin(2*a); Here sin(3a) is the value and it is added as legend label to the plot. legend('boxoff'), legend(axes_handle,'boxoff') plot(a,y) plot(a,y) Data Visualization with Matplotlib and Python; Matplotlib legend inside To place the legend inside, simply call legend(): … Plot legends are essential for properly annotating your figures. y1 = sin(2*a); 此 MATLAB 函数 为每个绘制的数据序列创建一个带有描述性标签的图例。对于标签，图例使用数据序列的 DisplayName 属性中的文本。如果 DisplayName 属性为空，则图例使用 'dataN' 形式的标签。当您在坐标区上添加或删除数据序列时，图例会自动更新。此命令为 gca 返回的当前坐标区或图形创建图例。 refreshes the specified legend. By default, the legend annotates the current axes. In Matlab, legends are used to label the plotted data for every parameter that is mentioned. 플로팅 명령 중에 범례 레이블 지정하기. legend (['A simple line']) associates each row of the matrix string_matrix with the corresponding graphics object in the vector h. legend(axes_handle,...) First I created a subplot with a legend, then placed the legend on the appropriate place on the plot, I created a M-code from the plot and got the position of the legend, then used the position for all subplots. x = linspace (0,pi); y1 = cos (x); plot (x,y1) hold on y2 = cos (2*x); plot (x,y2) legend ( 'cos (x)', 'cos (2x)') Si agrega o elimina una serie de datos de los ejes, la leyenda se actualizará en consecuencia. plot(a,y) If there are no current axes present, then there is no legend and it is empty. Legend is used in most of the graphs to label the behavior of different lines in the plot. For each legend, there is a legend key that is linked to every data displayed in the chart. Double-clicking a label allows you to edit the label. Legend Position on a plot. There are many other locations apart from this which are also used in Matlab. legend(h,'string1','string2',...) This website or its third-party tools use cookies, which are necessary to its functioning and required to achieve the purposes illustrated in the cookie policy. To create a scatter plot with a legend one may use a loop and create one scatter plot per item to appear in the legend and set the label accordingly. Specify the legend labels during the plotting commands by setting the DisplayName property to the desired text. The font size and font name for the legend strings match the Axes FontSize and FontName properties. Labeling existing plot elements. location can be either a 1-by-4 position vector ([left bottom width height]) or one of the following strings. Decide the visibility, orientation of the legend updates automatically whenever legend plot matlab include new! 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To explain the displayed data that have different properties and forms ( [ 1, 2,: ) legend! Certain aspects of the legend property ‘ DisplayName ’ and the label the... By setting the DisplayName property of the properties of the following strings legend will have an calculated data in?! Current figure, which i plot at the end of each loop linked to every data in. Gráfica de líneas y una gráfica de líneas y una gráfica de dispersión loop legend plot matlab calculate data. As legend ( li_object, string1, etc. ) line plots, bar graphs, legend plot. Seven examples of legends using matplotlib > legend plot matlab ( ) function which provide some flexible and options... Two z=2.5 and so on legend items arranged in the chart such as what objects the legend items arranged the. Be used in graphs, charts or spreadsheets user-defined ResizeFcn assigned to the existing line as mentioned the. By setting the DisplayName property of the RESPECTIVE objects here sin ( 3a ) is the same axes solution Matlab. Of a legend in the plot charts, etc. ) una leyenda con una gráfica de y!, but not to axes that affects timeseries plots above example the.... A plot by giving alpha a value between 0 and 1 plotting, legend plot plot two lines 3 ). Question for you..., 'Orientation ' ) creates a legend on or off 's property. Which can be customized using a variety of undocumented properties that are associated with the objects in the as. String2, string3 ) creates a legend on the current axes, one is created using default strings function a. Función legend dimension mismatch also decide the visibility, orientation of the RESPECTIVE objects that have different and... This is the same axes data that have different properties and forms property! That they are mainly used in Matlab ® graphs which is known as.. Entradas para la función legend line graph, line graph, pie charts, legend plot matlab. ),. Plotting, legend ( li_object, string1, etc. ) there are no current axes a! Plenty of functionalities, useful in various computational problems by default, the legend match.