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plot3 two legends in one plot3

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Tomas
Tomas 2014-1-27
评论： Tomas 2014-1-27
i have
Z1={{rand(1,3)},[{rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)}],[{rand(1,3)} {rand(1,3)} ] }
cl='gbrcmykw';
for k4=1:numel(Z1)
y=cell2mat(Z1{k4}');
plot3(y(:,1),y(:,2),y(:,3),[ cl(k4) 's'],'MarkerSize',12,'DisplayName',sprintf('Zhluk %k4',y))
hold on
end
title('Priebeh zhlukovania','FontSize',16,'Color','k')
legend('show','Location','NorthEastOutside')
hold on
and i have
TAZ4=[ 1 2 7; 1 2 8; 1 2 3; 7 4 1; 4 5 6 ]
for k4=1:size(TAZ4,1)
plot3(TAZ4(k4,1),TAZ4(k4,2),TAZ4(k4,3),[cl(k4)'X'],'MarkerSize',10,'DisplayName',sprintf('Tazisko %k4',TAZ))
hold on
end
legend('show','Location','SouthEastOutside')
How do I add two legends to a single plot ?
Thanks.

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采纳的回答

Kelly Kearney
Kelly Kearney 2014-1-27
I'm not really sure that code does what you think it does... you're looping over the points too many times in your drawT function (I don't think you want that outer loop, just a single i to use if your if cases. Also, %k isn't a valid sprintf format, so you're labels are all the same.
Anyway, here's a simplified version... you can build from there.
MON = [2.8 3.6 17.2; 5.4 8.3 15.8; 2.5 3.2 17.6];
Z1={{rand(1,3)},[{rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)}],[{rand(1,3)} {rand(1,3)} ] }
cl='grbckmyw';
axes('position', [0.1 0.1 0.7 0.8]);
view(3);
hold on;
for ii = 1:size(MON,1)
h1(ii) = plot3(MON(ii,1), MON(ii,2), MON(ii,3), ...
'marker', 'X', ...
'color', cl(ii), ...
'displayname', sprintf('Tazisko %d', ii), ...
'MarkerSize', 10, ...
'linestyle', 'none');
end
cl='gbrcmykw';
for ii = 1:size(Z1,2)
xyz = cat(1, Z1{ii}{:});
h2(ii) = plot3(xyz(:,1), xyz(:,2), xyz(:,3), ...
'marker', 's', ...
'color', cl(ii), ...
'displayname', sprintf('Zhluk %d', ii), ...
'markersize', 10, ...
'linestyle', 'none');
end
leg1 = legendflex(h1, get(h1, 'DisplayName'), 'anchor', {'ne','nw'}, 'buffer', [5 0]);
leg2 = legendflex(h2, get(h2, 'DisplayName'), 'anchor', {'se','sw'}, 'buffer', [5 0]);

更多回答（1 个）

Kelly Kearney
Kelly Kearney 2014-1-27
You can't have two legends associated with a single axis using Matlab's legend. However, you can with legendflex. Remove your legend calls and add this code to the end:
pos = get(gca, 'position');
set(gca, 'position', pos.*[1 1 0.8 1]);
h1 = findall(gca, 'marker', 's');
h2 = findall(gca, 'marker', 'X');
leg1 = legendflex(h1, get(h1, 'DisplayName'), 'anchor', {'ne','nw'}, 'buffer', [5 0]);
leg2 = legendflex(h2, get(h2, 'DisplayName'), 'anchor', {'se','sw'}, 'buffer', [5 0]);
You could make all this plotting a lot cleaner if you saved the handles of your plot objects, and then set things like marker and color after the fact, but I've left that alone for now. Note that I added the resizing of the axis, since unlike legend, legendflex doesn't automatically resize axes to allow space for legends.
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Tomas
Tomas 2014-1-27
I will send my function, start in command window for example: MON = [2.8 3.6 17.2; 5.4 8.3 15.8; 2.5 3.2 17.6]
drawT(MON)
Z1={{rand(1,3)},[{rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)} {rand(1,3)}],[{rand(1,3)} {rand(1,3)} ] }
drawZ(Z1)
I want to make it previewed in one plot, and their legends.
Thank you for your help
Tomas
Tomas 2014-1-27
one more question, when i have matrix 1x3
for example MON[1 2 3]
??? Error using ==> get Invalid handle
Error in ==> vykreslizhluk at 25
leg1 = legendflex(h1, get(h1, 'DisplayName'), 'anchor', {'ne','nw'}, 'buffer', [5 0]);
does not work for matrix(1x3) ?

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