place Figure handles in vektor

Hello im making a funtion were its possible to typ in a fnction and make a plot of it,

function plot_handles=skapaplot(varargin)
syms x X;
global plot_handles;
persistent n;

if isempty(n)
 n = 1;
else
 n = n + 1;
end

funk=input('function:','s');
figure;
ezplot(funk);
plot_hanldes(n)=gcf;
end

I want to keep track of how many figure and other information about the line in the plot, in the vector plot_handles. how can i do it in a easy way?

[Daniel Shub]

Other than a couple of typos and the fact that you are trying to return a global variable, what is your problem?

[yngv]

the varible plot_handles starts att the size 1 2, should'nt it be 1x1?

the main problem is to keep track of how many figures i got because i want to rerun the function n times

[Daniel Shub]

not on my computer.

[yngv]

i think the varible n is a problem in the function that makes plot_handles bigger then it should be, because it doesnt reset it self after ive stoped using the function

[yngv]

problem solved now, it works fine after clearing the memmory, but very annoying that it doesnt clear itselft between running the main file

[Jan]

@yngv: I do not think this is annoying, but a suboptimal design.

Answer 1

[Jan]

A cleaned version of your function, which avoid using global variables:

function Reply = skapaplot(Command)

persistent plot_handles
if nargin > 0 && strcmpi(Command, 'gethandles')
  Reply = plot_handles;
  return;
end

syms x X;
funk = input('function:', 's');
FigH = figure;
plot_handles = cat(2, plot_handles, FigH);
ezplot(funk);

Now the function replies the list of handles, if it is called with the input 'gethandles'.

[yngv]

thanks, kind of got it work yesterday but with clearing the memmory between the runs, but to keep the count in the plot_handles is smarter becuase its always starts as an zero matrix in the main program :=)