Undefined function or variable 'currentFigure'. Error in matlab.graphics.internal.newplotwrapper (line 14) if isempty(currentFigure)
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why i am taking this error? how can i fix it?
3 Comments
Stephanie Stewart
on 2 Dec 2018
p1=0;
p2=-2;
poles=[p1,p2];
num=[1];
den=poly(poles);
k=[0:0.01:10];
r=rlocus(num,den,k);
damp1= 0;
damp2=.45;
damp=[damp1,damp2];
om1=0;
om2=100;
om=[om1,om2];
grid on;
sgrid('new');
sgrid(damp, om);
grid on;
plot(r, '*');
I got the error when i tried to run this code. But i got the error in line 12.
this code worked 2 days ago...
now the plot function will not work
Accepted Answer
madhan ravi
on 11 Nov 2018
Edited: madhan ravi
on 11 Nov 2018
see https://www.mathworks.com/matlabcentral/answers/263788-how-to-detect-if-a-figure-exist#answer_206155 similar case
g = groot; %edited after sir Walter's comment
isempty(g.Children) % True if there are no open graphics objects, false otherwise
%---------------------------
fig = get(groot,'CurrentFigure');
~isempty(fig)
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