In adding a plot legend, is there a way to name a legend element with what is contained within a specific cell within a structure?

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Sean Quinn
Sean Quinn 2016-2-17
回答： MHN 2016-2-17
I am trying to plot some data, and am making a loop to do it. There are several data sets I am plotting but in naming the particularly data set (included in the legend), I would name it as what is contained in an element (or cell) within a structure. Is this even possible? Sorry if this is a little confusing.
For example, if what I want to call a particular data set is contained in data(1,3).MTConc, how would I code that?

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回答（2 个）

Walter Roberson
Walter Roberson 2016-2-17
legends = {data(1,3).MTConc, data(2,9).pH, 'Guitar'};
legend(legends);
MHN
MHN 2016-2-17
something like this?
x = -pi:pi/20:pi;
y1 = sin(x);
y2 = cos(x);
leg(1).name = 'sin(x)';
leg(2).name = 'cos(x)';
plot(x,y1, '.',x,y2,'.')
legend(leg(1).name,leg(2).name)

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