Message-ID: <49A3F733.4040304@erasmusmc.nl>
Date: 2009-02-24T13:33:39Z
From: Dimitris Rizopoulos
Subject: replace zeros in a block diagonal matrix with small random values?
In-Reply-To: <c3cb73d50902240528p34df88dfu2376e32d7f982624@mail.gmail.com>
say 'mat' is your matrix, then you could try something like (untested):
ind <- mat == 0
mat[ind] <- runif(sum(ind))
I hope it helps.
Best,
Dimitris
Rick DeShon wrote:
> Hi All.
>
> Imagine you have a large block diagonal matrix. I'd like to replace
> the zeros in this matrix with small random (runif) numbers. Any ideas
> for a simple and efficient way to do this?
>
> Best regards,
>
> Rick DeShon
>
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--
Dimitris Rizopoulos
Assistant Professor
Department of Biostatistics
Erasmus University Medical Center
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