legend in 2d line plot
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I'm plotting data in a for loop where I'm looping through two datasets so using plot...; hold on;plot...
I only want the legend for the first plot, but there doesn't seem to be a way of doing this. Any advice?
Failing this, is there a way of adding a graph onto a currently existing graph. So, that I could just plot the first with a legend and then plot the second on top of this without a legend?
The code I've written is shown below:
for i = 1:length(LakeName);
for ii = 1:length(CorrVariables)
fh{ii} = figure(ii);
plot(HiResDay,HiRes.(LakeName{i}).(CorrVariables{ii}),'linewidth',2,'color',cmap(i,:));hold on;
plot(LowResDay,LowRes.(LakeName{i}).(CorrVariables{ii}),'--k','linewidth',3);
hTitle = title ([CorrVariables{ii} ' 2011']);
hXLabel = xlabel('Time (Day of year)' );
hLegend = legend(LakeName{:});
end
end
This doesn't work as I expected; the legend shows the line for the first plot and then the second, then back to the first, so in the end I have the first legend entry in the designated color, then the second legend entry shown according to '--k'.
采纳的回答
the cyclist
2012-3-8
Here is a simple example of using the handles of only the first plots when making the legend.
h1 = zeros(5,1);
h2 = zeros(5,1);
lineColor = rand(10,3);
figure
hold on
for i =1:5;
h1(i) = plot(rand(4,1),rand(4,1),'Color',lineColor(i,:)); % Plot some random data in a random color
h2(i) = plot(rand(4,1),2+rand(4,1),'Color',lineColor(5+i,:));
end
legendText = {'1','2','3','4','5'};
legend(h1,legendText); % Make legend using handles to only first plots
3 个评论
Richard
2012-3-8
the cyclist
2012-3-8
I was hoping you would see how this would generalize. The essence is that you need to create a vector of the handles to the ONLY the elements you want in the legend. Then use that vector of handles when you call the legend command.
That is what I did in my example. I built my vector of handles from only the first plot, and used that vector in the legend command.
Richard
2012-3-9
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