## Tuesday, June 16, 2009

### do till condition is met "continue" example

This is a nice example.

clear

y = 1:100;
count = 0
for j = 1:length(y)

if y(j)>50, continue, end
count = count+1
x(j)=y(j)
pause

end

This takes x until y(j)>50. After the condition is met it simply passes out.

Better explained by:
clear

y = 1:100;
count = 0
for j = 1:length(y)
disp('go')
if y(j)>50, continue, end
count = count+1
x(j)=y(j)
pause

end

continue keeps on taking values does not break the chain.
while break breaks it and comes out of the loop

Contrasted over the
clear

y = 1:100;
count = 0
for j = 1:length(y)
disp('go')
if y(j)>50, break, end
count = count+1
x(j)=y(j)
pause

end

lastly;

clear
clc
y = 1:100;
count = 0
for j = 1:length(y)
disp('go')
if y(j)<20||y(j)>50, break, end
count = count+1
x(j)=y(j)
pause

end

this does not even work while continue will keep looking for the situation.
Break just breaks while continue keep working escaping to the next one and checking!

## Thursday, June 11, 2009

### saving .mat file as per the iteration

I wanted to save the mat files as the iteration progressed.
here is the quick solution:
it saves the mat file with number of iteration as the file name: viz: 100.mat, 200.mat etc.
This is handy when you want to compare the results of the intermediate results as you progress the iteration.

if rem(nn,SS/10)==0
disp(['iteration: ', num2str(nn), ' of ', num2str(SS)]);
save ([num2str(nn)])
end