MATLAB: One last question about plotting cell array

plot

So I get that I can have my data arranged like:

x1, y1, linespec1, x2, y2, linespec2, etc…

What about creating a legend? Can I add in the legend string after linespec?

Best Answer

No. The standard linespec strings are the only per-line properties you can set in a single plot() call. You will have to use the plot() form that returns the lineseries handles and set() the DisplayName property of each handle.

Related Solutions

MATLAB: How to change the appearance of the lines in the legend in a MATLAB figure

The handles for the line objects in the legend are returned as part of the output from LEGEND. You can use the SET command to change the properties if you have the lines' handles:

x = 1:10;
y1 = rand(1,10); % 10 random numbers 
y2 = randn(1,10); % 10 normally distributed random numbers 
plot(x,y1,'rx--',x,y2,'bo-')
[legh,objh] = legend('curve1','curve2'); % handles to the legend and its objects

There would be two line objects each (4 in total) associated to each of the line objects in the original plot.This can be found by:

% find the handles in 'objh' that correspond to line objects
lineh = findobj(objh,'type','line')

Two are used to display the lines' LineStyle with their Marker property set to 'none'. The other two are used to display the same markers as the lines in the plot with their linestyles set to 'none'. Setting the MarkerSize will only affect the appearance of the lines that have markers.

% set the marker size
set(lineh,'MarkerSize',10)

MATLAB: How to get current lineseries handle

The lineseries will (generally) be a child of the axes. So if you have a have a handle to the axes (or using gca, if it is the current axes), you can query its Children property:

>> a = axes;
>> h1 = plot(1:10);
>> h2 = get(a, 'Children');
>> h1 == h2
ans =
       1

If you have a very complicated scene (perhaps there are multiple axes involved or maybe hggroups and hgtransforms), it may be easier to use the findobj command:

>> h1 = plot(1:10);
>> h2 = findobj('Type', 'line');
>> h1 == h2
ans =
       1

Best Answer

Related Solutions

MATLAB: How to change the appearance of the lines in the legend in a MATLAB figure

MATLAB: How to get current lineseries handle

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