[R] Conversion of matrix in r to integer

[David Carlson]

Assuming you have created a data.frame from the text file you
sent that is called RP:

> str(RP)
# 'data.frame':   28597 obs. of  8 variables:
# $ gene : chr  "XLOC_000001" "XLOC_000002" "XLOC_000003"
"XLOC_000004" ...
# $ ZPT.1: num  3516 342 2000 143 0 ...
# $ ZPT.0: num  626 82 361 30 0 0 0 0 0 1 ...
# $ ZPT.2: num  1277 185 867 67 0 ...
# $ ZPT.3: num  770 72 438 37 0 0 0 0 0 3 ...
# $ PGR.1: num  2603 304 195 66 0 ...
# $ PGR.0: num  1534 175 80 49 0 ...
# $ PGR.2: num  1764 208 109 54 0 ...
> RP[,-1] <- sapply(round(RP[,-1], 0), as.integer)
> str(RP)
# 'data.frame':   28597 obs. of  8 variables:
#  $ gene : chr  "XLOC_000001" "XLOC_000002" "XLOC_000003"
"XLOC_000004" ...
#  $ ZPT.1: int  3516 342 2000 143 0 0 0 0 0 7 ...
#  $ ZPT.0: int  626 82 361 30 0 0 0 0 0 1 ...
#  $ ZPT.2: int  1277 185 867 67 0 0 0 0 0 5 ...
#  $ ZPT.3: int  770 72 438 37 0 0 0 0 0 3 ...
#  $ PGR.1: int  2603 304 195 66 0 1 0 0 0 0 ...
#  $ PGR.0: int  1534 175 80 49 0 0 1 0 0 0 ...
#  $ PGR.2: int  1764 208 109 54 0 0 1 0 0 1 ...

-------------------------------------
David L Carlson
Associate Professor of Anthropology
Texas A&M University
College Station, TX 77840-4352

-----Original Message-----
From: r-help-bounces at r-project.org
[mailto:r-help-bounces at r-project.org] On Behalf Of Vivek Das
Sent: Thursday, August 1, 2013 10:49 AM
To: arun; R help
Subject: [R] Conversion of matrix in r to integer

Hi,
 I have a matrix which which I need for some analysis and that
package in R
only works on integer values. My data.frame is not integer
value . I want
to convert the values to the nearest  integer values for my
matrix. Can you
tell me how to do it in r. I am sending you the matrix where
you can see a
lot of decimal point numbers and all of them needs to be
converted to
integer values

----------------------------------------------------------

Vivek Das
PhD Student in Computational Biology
Giuseppe Testa's Lab
European School of Molecular Medicine
IFOM-IEO Campus
Via Adamello, 16
Milan, Italy

emails: vivek.das at ieo.eu
            vchris_05 at yahoo.co.in
            vd4mmind at gmail.com