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legend NumColumns not working in 2018a

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Phil
Phil on 16 Sep 2021
Commented: Phil on 17 Sep 2021
I'm using MATLAB 2018a, which I understand is when the NumColumns property of legend appeared. But when I run this code:
t = 2*pi*(0:0.01:1);
x1 = sin(t);
x2 = cos(t);
figure(1)
plot(t,x1)
hold %on
plot(t,x2)
hold %off
xlim([0 2*pi])
legend('sin(t)','cos(t)','NumColumns',2)
I receive these errors:
Error using legend>process_inputs (line 554)
Invalid argument. Type 'help legend' for more information.
Error in legend>make_legend (line 306)
[autoupdate,orient,location,position,children,listen,strings,propargs] = process_inputs(ha,argin);
%#ok
Error in legend (line 259)
make_legend(ha,args(arg:end),version);

Accepted Answer

the cyclist
the cyclist on 16 Sep 2021
It looks to me that the documentation states the change was in R2018b, not R2018a.
As you can see, that code works fine here (R2021a):
t = 2*pi*(0:0.01:1);
x1 = sin(t);
x2 = cos(t);
figure(1)
plot(t,x1)
hold %on
Current plot held
plot(t,x2)
hold %off
Current plot released
xlim([0 2*pi])
legend('sin(t)','cos(t)','NumColumns',2)
  4 Comments
Phil
Phil on 17 Sep 2021
@Steven Lord Ah, that's it! NumColumns works in R2018a if I use a Legend object as you suggested. Thanks so much!

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