Hi,
It is better to keep it as a data.frame as matrix cannot hold different classes
together, so it automatically converts the other columns into "character" as
the first column "gene" is "character".
dat1<-
read.table("RP_matrix_RF_ZPTvsPGR.txt",sep="",header=TRUE,stringsAsFactors=FALSE)
dat1[,-1]<- lapply(lapply(dat1[,-1],round),as.integer)
str(dat1)
#'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 ...
In case you want it as matrix: then
mat1<- as.matrix(dat1[,-1])
row.names(mat1)<- dat1[,1]
str(mat1)
# int [1:28597, 1:7] 3516 342 2000 143 0 0 0 0 0 7 ...
# - attr(*, "dimnames")=List of 2
# ..$ : chr [1:28597] "XLOC_000001" "XLOC_000002" "XLOC_000003" "XLOC_000004"
...
# ..$ : chr [1:7] "ZPT.1" "ZPT.0" "ZPT.2" "ZPT.3" ...
head(mat1)
# ZPT.1 ZPT.0 ZPT.2 ZPT.3 PGR.1 PGR.0 PGR.2
#XLOC_000001 3516 626 1277 770 2603 1534 1764
#XLOC_000002 342 82 185 72 304 175 208
#XLOC_000003 2000 361 867 438 195 80 109
#XLOC_000004 143 30 67 37 66 49 54
#XLOC_000005 0 0 0 0 0 0 0
#XLOC_000006 0 0 0 0 1 0 0
A.K.
________________________________
From: Vivek Das <vd4mm...@gmail.com>
To: arun <smartpink...@yahoo.com>; R help <r-help@r-project.org>
Sent: Thursday, August 1, 2013 11:48 AM
Subject: 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....@ieo.eu
vchris...@yahoo.co.in
vd4mm...@gmail.com
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