Dear R-WinEdit users, I have a simple question, but somehow I cannot find the answer even though I tried a lot! I have an unstructured ASCII-file and I want to import it into a matrix m in R, so that every character is defined by m[i;j]. The rows are not of the same length. The file looks like the following shortened abstract example: name: xxxxx xxxx age: 9.9.99 record number: 999 title: xxxxx xxxx xxx keywords: xxx xx "white space" name: yyyy yyyyyyyyyyyy age: 8.8.88 record number: 8 title: yyyy yy yyyy keywords: yyyyyyyyyyy yyyyyyyy yyy "white space" The result should be for example: m[1;1]=n I would be very grateful for your help! Michael Graber michael.graber at mail.uni-wuerzburg.de
converting an ASCII file to a matrix
3 messages · Michael Graber, Uwe Ligges
Michael Graber wrote:
Dear R-WinEdit users,
a) What is an R-WinEdit user? b) I guess you mean R-WinEdt (without an i) implying the plug-in for the WinEdt editor? WinEdit is another editor that does not support R very closely, AFAIK. c) The following questions are completely unrelated to any editor, so why do you ask only a very small (empty?) subset of the R community?
I have a simple question, but somehow I cannot find the answer even though I tried a lot! I have an unstructured ASCII-file and I want to import it into a matrix m in R, so that every character is defined by m[i;j]. The rows are not
d) What does m[i;j] mean? If we are speaking R, I guess you mean m[i,j]?
of the same length. The file looks like the following shortened abstract example: name: xxxxx xxxx age: 9.9.99 record number: 999 title: xxxxx xxxx xxx keywords: xxx xx "white space" name: yyyy yyyyyyyyyyyy age: 8.8.88 record number: 8 title: yyyy yy yyyy keywords: yyyyyyyyyyy yyyyyyyy yyy "white space" The result should be for example: m[1;1]=n
So what aboutreading all lines, and storing separate characters as vectors in a list using strsplit(). L <- strsplit(readLines(filename), "") L[[i]][j] A matrix seems to be the wrong way with unequal line lengths. Uwe Ligges
I would be very grateful for your help! Michael Graber michael.graber at mail.uni-wuerzburg.de
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
Uwe Ligges wrote:
Michael Graber wrote:
Dear R-WinEdit users,
a) What is an R-WinEdit user? b) I guess you mean R-WinEdt (without an i) implying the plug-in for the WinEdt editor? WinEdit is another editor that does not support R very closely, AFAIK. c) The following questions are completely unrelated to any editor, so why do you ask only a very small (empty?) subset of the R community?
I have a simple question, but somehow I cannot find the answer even though I tried a lot! I have an unstructured ASCII-file and I want to import it into a matrix m in R, so that every character is defined by m[i;j]. The rows are not
d) What does m[i;j] mean? If we are speaking R, I guess you mean m[i,j]?
of the same length. The file looks like the following shortened abstract example: name: xxxxx xxxx age: 9.9.99 record number: 999 title: xxxxx xxxx xxx keywords: xxx xx "white space" name: yyyy yyyyyyyyyyyy age: 8.8.88 record number: 8 title: yyyy yy yyyy keywords: yyyyyyyyyyy yyyyyyyy yyy "white space" The result should be for example: m[1;1]=n
So what aboutreading all lines, and storing separate characters as vectors in a list using strsplit(). L <- strsplit(readLines(filename), "") L[[i]][j] A matrix seems to be the wrong way with unequal line lengths.
Let me add, what about reading it in using read.dcf(), a function that is designed for the data specified above! And much more appropriate than looking at single characters, I think. Uwe Ligges
Uwe Ligges
I would be very grateful for your help! Michael Graber michael.graber at mail.uni-wuerzburg.de
______________________________________________ R-help at stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html