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From: Harsh Dhingra on 11 Aug 2010 14:10
Hi,

I have a large matrix of raw data. I wanted to lookup a value from the first column of the matrix and extract the corresponding row entries from another column. Was wondering what would be the best way to do this.

Thanks,
Harsh
From: Walter Roberson on 11 Aug 2010 14:19
Harsh Dhingra wrote:

> I have a large matrix of raw data. I wanted to lookup a value from the
> first column of the matrix and extract the corresponding row entries
> from another column. Was wondering what would be the best way to do this.

Probably using sub2ind()
From: Matt J on 11 Aug 2010 14:40
"Harsh Dhingra" <hrshdhngr(a)gmail.com> wrote in message <i3up2a$g08$1(a)fred.mathworks.com>...
> Hi,
>
> I have a large matrix of raw data. I wanted to lookup a value from the first column of the matrix and extract the corresponding row entries from another column. Was wondering what would be the best way to do this.
========

Do you mean this?

A(A(:,1)==MyValue,OtherColumn);
From: Harsh Dhingra on 11 Aug 2010 14:51
"Matt J " <mattjacREMOVE(a)THISieee.spam> wrote in message <i3uqq5$81j$1(a)fred.mathworks.com>...
> "Harsh Dhingra" <hrshdhngr(a)gmail.com> wrote in message <i3up2a$g08$1(a)fred.mathworks.com>...
> > Hi,
> >
> > I have a large matrix of raw data. I wanted to lookup a value from the first column of the matrix and extract the corresponding row entries from another column. Was wondering what would be the best way to do this.
> ========
>
> Do you mean this?
>
> A(A(:,1)==MyValue,OtherColumn);

That works. Sorry if it was a trivial question.
Thanks!
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