animation - Matlab assignin('base',...) Resets -


i attempting write function that, if called before animation, handle close events without code in animation file. 

function matlabstopfunction(varargin) persistent runs if runs==2     runs = []; end if isempty(runs)     evalin('base','figure(''deletefcn'',@matlabstopfunction);');     runs = 1; else     assignin('base','play',false);     pause(1);     runs = 2; end end

here's sample animation code i've been using:

function sampleanimation matlabstopfunction; r = 5; th = 0; play = true; while play     x = r * cosd(th);     y = r * -sind(th);     plot(x,y,'r*');     axis([-10 10 -10 10]);     th = th + 45;     pause(0.25); end end

the stop function works fine creating figure, , when close figure, calls same function expected (including assignin on line 10). however, when stepping through, when first base function (sampleanimation), play false expected: base workspace

but when step 1 more line, play reset true

base workspace

am incorrectly assigning value of play false in stop function, , if so, how correct animation stops when figure closed while keeping code inside animation minimum? trying replicate method on this blog except code contained in separate file.

i running matlab 2014b on windows 8.1.

to answer question - modifying value play in base workspace - loop in workspace of sampleanimation function -> not changing required value stop animation. verify clear variables in base workspace clear before run code , see variable play created , set false.

by way there simpler way this, animation can create figure , can stop when deleted:

function sampleanimation   h = figure;   r = 5;   th = 0;   while ishandle ( h )     x = r * cosd(th);     y = r * -sind(th);     plot(x,y,'r*');     axis([-10 10 -10 10]);     th = th + 45;     pause(0.25);   end end

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