[BioC] sum of columns

[chris Jhon]

Hi Alex,

Thank you.

However , i got error due to memory limit

Error: memory exhausted (limit reached?)

In addition i have one col that have no numerical vlaue (e.g gene
name) row sums will work only for numerical value columns?

On 7/11/13, Alessandro Brozzi <alessandro.brozzi at gmail.com> wrote:
> let call D your dataframe then:
>
> D[ rowSums(D) > 0 , ]
>
> alex
>
>
> On Thu, Jul 11, 2013 at 10:56 AM, chris Jhon <cjhon217 at gmail.com> wrote:
>
>> Hi All,
>>
>> I have a data frame like this
>>
>>
>> gene         symbol    sample1 sample2 sample3 sample4
>>
>> gene1             A          0          0                0            0
>> gene2             B          0          10              2            0
>> gene3             C          0         0                0             0
>>
>> and i would like to subset the data frame to have only genes that have
>> sum in all samples greater than zero.
>>
>> How to do this in R
>>
>> Thank you for any help
>>
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>