That way, at the second iteration the plot from the 2nd iteration will be plotted, the plot from the 1st will be deleted and after these operations I get it to display the plot (again drawnow). I delete h_old and overwrite it with the new plots I created. Description legendplaces a legend on various types of graphs (line plots, bar graphs, pie charts, etc.). Second Plot (in the called function) h(1)=plot(points,modeldata1,'r-','DisplayName','Model Data, L= 0.1 m') I chose 0,250 because it's in the range of the data (otherwise it messes up the axis) I am plotting six curves in a MATLAB figure. The basic syntax is: legend( ‘Description 1’, ‘Description 2’, ). The simplest way to use the function is to pass in a character string for each line on the plot. Legend('-DynamicLegend','Location','Best')ĭrawnow forces the plot to be drawn right away, and h_old is just a "placeholder" that I make use of later on. Description legend places a legend on various types of graphs (line plots, bar graphs, pie charts, etc.). The legend() function in MATLAB/Octave allows you to add descriptive labels to your plots. Plot(points,expdata3,'go','DisplayName','Experimental, L= 0.3 m') Plot(points,expdata2,'bo','DisplayName','Experimental, L= 0.2 m') I was able to do it with a combination of solutions from different questions.Ĭlose all will ensure your plot starts anew every timeįirst plot (in my main) plot(points,expdata1,'ro','DisplayName','Experimental, L= 0.1 m') hold on Edit: After some experimentation, I found that there is a maximum size of marker that legend will show, which is about 10. matlab legend Share Follow asked at 4:52 Lo Lopold Hertz 134k 178 445 696 Appending entries to a legend is not possible, so you have to construct a new legend using data from the current legend. If you don't want that, you will need to create dummies with NaN. If this still troubles you I can write a short snippet.I had a similar issue: I plotted three sets of experimental data first, then got into my parameter estimation to simulate the function and wanted to plot the model data every time, holding on to the experimental data but deleting the model data from the previous run. Ran in: This is only possible by increasing the size of the markers themselves in the plot. Since nothing was passed as an argument to legend function, MATLAB created labels as ‘data1’ and ‘data2’. change the values of left and bottom) and repeat until your conditions are met. Explanation: As we can see in the above output, we have plotted 2 vectors and our legend function created corresponding labels. What you can do next, is check if and which of your graphs in the plot cross paths with the legend (maybe define a relative distance function based on some distance threshold) and if they do, then randomly reposition the legend (i.e. This function offers a more flexible version of the legend command. Then, depending on the size of the frame (I would suggest you use axis() for this, if possible), you can pinpoint the position of the legend within the grid. m Matlab function, along with all dependent functions required to run it. How do I set an overall legend for all 4 subplots These subplots have exactly the same legend. They display similar data, so I need only one legend for them. These two values, left and bottom, specify the distance from the lower left corner of the figure to the lower left corner of the legend, and they are analogous to the grid frame you are using. Vote 1 Link Answered: Bill Tubbs on Accepted Answer: MathWorks Support Team I have a 4 subplots in a 2x2 grid. Debe pasar las coordenadas x e y en las que desea colocar el texto. También podemos usar la función text () para agregar texto al gráfico. You will need to focus on left and bottom. Agregue leyendas personalizadas usando la función text () en MATLAB. Use the legend() function to add a legend, specifying the labels for each data series. Heres a step-by-step guide to get you started: Create your plot using the plot() function. You should get something like this: ans = Adding a legend to your MATLAB plot is like putting the cherry on top of a sundae its the finishing touch that ties everything together. So, you have tried using Location instead of Position? For example: x =1:100 Īnd you are getting odd results correct? A quick way of solving this would be to still use Location, with best, and extract the coordinates: lgd.Position
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