[R] trheshold matrix

[Uwe Ligges]

On 03.06.2011 10:09, Alaios wrote:
> Dear all I want to put zeros and ones in matrix I have if the values are over a threshold
>
> For that I use:
>
> origBoolmap<- (origmap>thresh )


origBoolmap <- as.numeric(origmap>thresh )

should do it without need for any other code.

Uwe Ligges





> origBoolmap[thresh<  origmap]<- 1
> origBoolmap[thresh>= origmap]<- 0
>
> Could you please tell me if the first line out of the three is useless? I have checked and seems taht I take the same results.
>
> Best Regards
> Alex
>
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