How do I prevent rewriting of data in my structure array within a for loop?

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Keerthana Natarajan
Keerthana Natarajan 2022-11-12
评论： Stephen23 2022-11-15
Hello,
I have a for loop running as show below. The goal is for the data to be added as a new row to the fields with every loop run. Currently, it is rewriting previous rows from the loops run as 0. How do I preserve the data collected while adding to it?
if buttoncounter<=5
for i=1:buttoncounter
r1(buttoncounter)=randi(length(gettrialone));
r2(buttoncounter)=randi(length(paytrialone));
set(messaget1g1,'String',sprintf('Collect $%d and pay a fine of $%d',...
[gettrialone(r1(buttoncounter)),paytrialone(r2(buttoncounter))]))
get(buttonA,'Enable');set(buttonA,'Enable','off');
get(buttonB,'Enable');set(buttonB,'Enable','off');
datat1g1(buttoncounter).Button_Pressed(buttoncounter,1)='B';
datat1g1(buttoncounter).Earned(buttoncounter,1)=gettrialone(r1(buttoncounter));
datat1g1(buttoncounter).Fee(buttoncounter,1)=paytrialone(r2(buttoncounter));
end
end

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回答（1 个）

Chris
Chris 2022-11-12
编辑：Chris 2022-11-12
Perhaps something like:
if buttoncounter<=5
LEN = numel(data1g1);
for i=1:buttoncounter
% ...
data1g1(buttoncounter).Button_Pressed(LEN+buttoncounter,1)='B';
% ...
end
end
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Chris
Chris 2022-11-15
@Keerthana Natarajan it sounds like your code is in a callback/function. Variables created in a function are forgotten when the function completes. Persistent variables are one option to set scope; best practice is to pass the variables you want to keep into and out of the function as arguments.

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