MATLAB Central Newsreader - Skipped if statements

Skipped if statements

Jason Mickey — Thu, 29 Oct 2009 03:23:02 -0400

Why is my if statement being skipped? (The test if t==2 fails, even though the final value of t is 2). I have in a while loop

if (t==2.0000) || (t==0.2) || (t==0.8) || (t==1.0) || (t==2.0)
figure
contour(X,Y,Tnew);
end

Also, is there a way to title my figure with the value of t encoded in it? I tried

title('t = %1.3f',t)

But that didn't work.

Thanks.

Re: Skipped if statements

nor ki — Thu, 29 Oct 2009 10:07:01 -0400

"Jason Mickey" <jmick175@gmail.com> wrote in message <hcb1qm$958$1@fred.mathworks.com>...
> Why is my if statement being skipped? (The test if t==2 fails, even though the final value of t is 2). I have in a while loop
>
> if (t==2.0000) || (t==0.2) || (t==0.8) || (t==1.0) || (t==2.0)
> figure
> contour(X,Y,Tnew);
> end
>
>
> Also, is there a way to title my figure with the value of t encoded in it? I tried
>
> title('t = %1.3f',t)
>
> But that didn't work.
>
>
> Thanks.

Hi Jason

numbers are not exact for reason of binarisation, they might have a small deviation so try

abs(t-2.0) < alloweddeviation

instead of

t==2.0

hth

kinor

Re: Skipped if statements

Jos — Thu, 29 Oct 2009 12:38:01 -0400

"Jason Mickey" <jmick175@gmail.com> wrote in message <hcb1qm$958$1@fred.mathworks.com>...
* snip*

> Also, is there a way to title my figure with the value of t encoded in it? I tried
>
> title('t = %1.3f',t)

TITLE expects a string as input. Take a look at SPRINTF.

STR = sprintf('t %1.3f',t)
title (STR)

hth
Jos