Displaying 2 results from an estimated 2 matches for "idlength".
2012 Aug 15
2
to remove columns and rows
Dear,
I am using R I'm trying to identify and remove columns and rows in a data
frame that are has elements equals. For example in dataframe below. The
columns 1, 2,3,4,5 ,6 and 10 (file1) has elements equal then should be
removed. How can I ask R to remove those columns with same elements in new
dataframe (file2) to result a matrix as follows:
file1
1 0 2 2 1 1 5 1 1 1
1 0
2012 Aug 25
2
remove column
...1
1 0 2 2 1 0 5 0 2 1
1 0 2 2 1 1 5 1 0 1
",sep="",header=FALSE)
the result after the filter will be
0 2 2 1 5 1 1
0 2 2 1 5 1 1
0 2 2 2 5 2 2
0 2 2 1 5 1 1
0 2 2 0 5 0 2
0 2 2 1 5 1 0
I used this commands idlength<-sapply(file,function(x) length(unique(x))
),
but came an error message:
caught segfault ***
address 0x4, cause 'memory not mapped'
*My question: is it possible to remove the all columns from above file
to *achieve* the desired result?*
* *
* **Thank you for help*
Kate Dres...