Re: [R] How to read only specified columns from a data file
read.table() looks at the first five rows when determining how many columns there are. If there are more columns in row 7 and you do not specify that in the read.table() command directly, they will be wrapped to the next row. This was discussed on the list within the last couple weeks. Sarah On Wed, Mar 16, 2011 at 7:54 AM, Luis Ridao luri...@gmail.com wrote: David, Thanks for your tip but it seems I'm having problems with the number of columns R manages to read in. Below it s an example of the data read in: inp[1:20,] V1 V2 V3 V4 V5 V6 V7 V8 V9 1 1. log_fy_coff -1.007600 0.119520 1. NA NA NA 2 2. log_fy_coff -0.935010 0.112840 0.8896 1. NA NA 3 3. log_fy_coff -0.876260 0.107500 0.8219 0.8847 1. NA NA 4 4. log_fy_coff -0.683090 0.103030 0.7656 0.8143 0.8747 1. NA 5 5. log_fy_coff -0.623500 0.100980 0.7206 0.7636 0.8086 0.8764 1. 6 6. log_fy_coff -0.583330 0.098978 0.6819 0.7214 0.7615 0.8150 0.8762 7 1. NA NA NA NA NA NA 8 7. log_fy_coff -0.676790 0.096608 0.6521 0.6892 0.7254 0.7719 0.8148 9 0.8717 1. NA NA NA NA NA NA 10 8. log_fy_coff -0.696060 0.093761 0.6297 0.6654 0.6988 0.7405 0.7750 11 0.8116 0.8643 1.00 NA NA NA NA NA 12 9. log_fy_coff -0.527060 0.089949 0.6003 0.6347 0.6667 0.7060 0.7367 as you see there are only 9 columns in inp and the rest is read in in the following row(see row 7) I just don't understand why this is happening (using fill=T does not help either) Best, Luis On Tue, Mar 15, 2011 at 5:15 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 15, 2011, at 1:11 PM, rex.dw...@syngenta.com wrote: I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) I would have suggested: mycols - rep(NULL, 430) ; mycols[1:5] - rep(numeric, 5) inp - read.table(myfile, skip=2, colClasses=mycols) head(inp) -- David. Any suggestions? -- Sarah Goslee http://www.functionaldiversity.org __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to read only specified columns from a data file
This is my code: mycols - rep(NULL, 430) ; mycols[c(1,3:5)] - rep(numeric, 4) ; mycols[c(2)] - rep(character,1) inp - read.table(myfile, skip=2, colClasses=mycols,fill=T) head(inp) Best, Luis On Wed, Mar 16, 2011 at 1:03 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 16, 2011, at 8:13 AM, Sarah Goslee wrote: read.table() looks at the first five rows when determining how many columns there are. If there are more columns in row 7 and you do not specify that in the read.table() command directly, they will be wrapped to the next row. This was discussed on the list within the last couple weeks. In addition to Sarah's comments, I also not that you did not include your code. I don't think it could have been identical to the code I suggested, which was in turn based on the code you had proposed. So ... what did you do to get that result? -- David. Sarah On Wed, Mar 16, 2011 at 7:54 AM, Luis Ridao luri...@gmail.com wrote: David, Thanks for your tip but it seems I'm having problems with the number of columns R manages to read in. Below it s an example of the data read in: inp[1:20,] V1 V2 V3 V4 V5 V6 V7 V8 V9 1 1. log_fy_coff -1.007600 0.119520 1. NA NA NA 2 2. log_fy_coff -0.935010 0.112840 0.8896 1. NA NA 3 3. log_fy_coff -0.876260 0.107500 0.8219 0.8847 1. NA NA 4 4. log_fy_coff -0.683090 0.103030 0.7656 0.8143 0.8747 1. NA 5 5. log_fy_coff -0.623500 0.100980 0.7206 0.7636 0.8086 0.8764 1. 6 6. log_fy_coff -0.583330 0.098978 0.6819 0.7214 0.7615 0.8150 0.8762 7 1. NA NA NA NA NA NA 8 7. log_fy_coff -0.676790 0.096608 0.6521 0.6892 0.7254 0.7719 0.8148 9 0.8717 1. NA NA NA NA NA NA 10 8. log_fy_coff -0.696060 0.093761 0.6297 0.6654 0.6988 0.7405 0.7750 11 0.8116 0.8643 1.00 NA NA NA NA NA 12 9. log_fy_coff -0.527060 0.089949 0.6003 0.6347 0.6667 0.7060 0.7367 as you see there are only 9 columns in inp and the rest is read in in the following row(see row 7) I just don't understand why this is happening (using fill=T does not help either) Best, Luis On Tue, Mar 15, 2011 at 5:15 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 15, 2011, at 1:11 PM, rex.dw...@syngenta.com wrote: I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) I would have suggested: mycols - rep(NULL, 430) ; mycols[1:5] - rep(numeric, 5) inp - read.table(myfile, skip=2, colClasses=mycols) head(inp) -- David. Any suggestions? -- Sarah Goslee http://www.functionaldiversity.org __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to read only specified columns from a data file
On Mar 16, 2011, at 8:13 AM, Sarah Goslee wrote: read.table() looks at the first five rows when determining how many columns there are. If there are more columns in row 7 and you do not specify that in the read.table() command directly, they will be wrapped to the next row. This was discussed on the list within the last couple weeks. In addition to Sarah's comments, I also not that you did not include your code. I don't think it could have been identical to the code I suggested, which was in turn based on the code you had proposed. So ... what did you do to get that result? -- David. Sarah On Wed, Mar 16, 2011 at 7:54 AM, Luis Ridao luri...@gmail.com wrote: David, Thanks for your tip but it seems I'm having problems with the number of columns R manages to read in. Below it s an example of the data read in: inp[1:20,] V1 V2V3 V4 V5 V6 V7 V8 V9 1 1. log_fy_coff -1.007600 0.119520 1. NA NA NA 2 2. log_fy_coff -0.935010 0.112840 0.8896 1. NA NA 3 3. log_fy_coff -0.876260 0.107500 0.8219 0.8847 1. NA NA 4 4. log_fy_coff -0.683090 0.103030 0.7656 0.8143 0.8747 1. NA 5 5. log_fy_coff -0.623500 0.100980 0.7206 0.7636 0.8086 0.8764 1. 6 6. log_fy_coff -0.583330 0.098978 0.6819 0.7214 0.7615 0.8150 0.8762 7 1.NA NA NA NA NA NA 8 7. log_fy_coff -0.676790 0.096608 0.6521 0.6892 0.7254 0.7719 0.8148 9 0.8717 1.NA NA NA NA NA NA 10 8. log_fy_coff -0.696060 0.093761 0.6297 0.6654 0.6988 0.7405 0.7750 11 0.8116 0.8643 1.00 NA NA NA NA NA 12 9. log_fy_coff -0.527060 0.089949 0.6003 0.6347 0.6667 0.7060 0.7367 as you see there are only 9 columns in inp and the rest is read in in the following row(see row 7) I just don't understand why this is happening (using fill=T does not help either) Best, Luis On Tue, Mar 15, 2011 at 5:15 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 15, 2011, at 1:11 PM, rex.dw...@syngenta.com wrote: I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org ] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) I would have suggested: mycols - rep(NULL, 430) ; mycols[1:5] - rep(numeric, 5) inp - read.table(myfile, skip=2, colClasses=mycols) head(inp) -- David. Any suggestions? -- Sarah Goslee http://www.functionaldiversity.org __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to read only specified columns from a data file
On Wed, Mar 16, 2011 at 9:07 AM, Luis Ridao luri...@gmail.com wrote: This is my code: mycols - rep(NULL, 430) ; mycols[c(1,3:5)] - rep(numeric, 4) ; mycols[c(2)] - rep(character,1) rep(NULL, 430) does not give you a vector of length 430; it gives you a NULL vector, and at the end of this process mycols is of length 5. So read.table() does exactly what you've told it, and reads in the columns as calculated from the first five rows, and gives the first five columns the classes specified in mycols. According to the documentation for read.table(), you want NULL rather than NULL anyway, and rep(NULL, 430) should work as expected. Sarah inp - read.table(myfile, skip=2, colClasses=mycols,fill=T) head(inp) Best, Luis On Wed, Mar 16, 2011 at 1:03 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 16, 2011, at 8:13 AM, Sarah Goslee wrote: read.table() looks at the first five rows when determining how many columns there are. If there are more columns in row 7 and you do not specify that in the read.table() command directly, they will be wrapped to the next row. This was discussed on the list within the last couple weeks. In addition to Sarah's comments, I also not that you did not include your code. I don't think it could have been identical to the code I suggested, which was in turn based on the code you had proposed. So ... what did you do to get that result? -- David. Sarah On Wed, Mar 16, 2011 at 7:54 AM, Luis Ridao luri...@gmail.com wrote: David, Thanks for your tip but it seems I'm having problems with the number of columns R manages to read in. Below it s an example of the data read in: inp[1:20,] V1 V2 V3 V4 V5 V6 V7 V8 V9 1 1. log_fy_coff -1.007600 0.119520 1. NA NA NA 2 2. log_fy_coff -0.935010 0.112840 0.8896 1. NA NA 3 3. log_fy_coff -0.876260 0.107500 0.8219 0.8847 1. NA NA 4 4. log_fy_coff -0.683090 0.103030 0.7656 0.8143 0.8747 1. NA 5 5. log_fy_coff -0.623500 0.100980 0.7206 0.7636 0.8086 0.8764 1. 6 6. log_fy_coff -0.583330 0.098978 0.6819 0.7214 0.7615 0.8150 0.8762 7 1. NA NA NA NA NA NA 8 7. log_fy_coff -0.676790 0.096608 0.6521 0.6892 0.7254 0.7719 0.8148 9 0.8717 1. NA NA NA NA NA NA 10 8. log_fy_coff -0.696060 0.093761 0.6297 0.6654 0.6988 0.7405 0.7750 11 0.8116 0.8643 1.00 NA NA NA NA NA 12 9. log_fy_coff -0.527060 0.089949 0.6003 0.6347 0.6667 0.7060 0.7367 as you see there are only 9 columns in inp and the rest is read in in the following row(see row 7) I just don't understand why this is happening (using fill=T does not help either) Best, Luis On Tue, Mar 15, 2011 at 5:15 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 15, 2011, at 1:11 PM, rex.dw...@syngenta.com wrote: I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) I would have suggested: mycols - rep(NULL, 430) ; mycols[1:5] - rep(numeric, 5) inp - read.table(myfile, skip=2, colClasses=mycols) head(inp) -- David. Any suggestions? -- -- Sarah Goslee http://www.functionaldiversity.org __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to read only specified columns from a data file
Thanks Sarah. Best, Luis On Wed, Mar 16, 2011 at 1:19 PM, Sarah Goslee sarah.gos...@gmail.com wrote: On Wed, Mar 16, 2011 at 9:07 AM, Luis Ridao luri...@gmail.com wrote: This is my code: mycols - rep(NULL, 430) ; mycols[c(1,3:5)] - rep(numeric, 4) ; mycols[c(2)] - rep(character,1) rep(NULL, 430) does not give you a vector of length 430; it gives you a NULL vector, and at the end of this process mycols is of length 5. So read.table() does exactly what you've told it, and reads in the columns as calculated from the first five rows, and gives the first five columns the classes specified in mycols. According to the documentation for read.table(), you want NULL rather than NULL anyway, and rep(NULL, 430) should work as expected. Sarah inp - read.table(myfile, skip=2, colClasses=mycols,fill=T) head(inp) Best, Luis On Wed, Mar 16, 2011 at 1:03 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 16, 2011, at 8:13 AM, Sarah Goslee wrote: read.table() looks at the first five rows when determining how many columns there are. If there are more columns in row 7 and you do not specify that in the read.table() command directly, they will be wrapped to the next row. This was discussed on the list within the last couple weeks. In addition to Sarah's comments, I also not that you did not include your code. I don't think it could have been identical to the code I suggested, which was in turn based on the code you had proposed. So ... what did you do to get that result? -- David. Sarah On Wed, Mar 16, 2011 at 7:54 AM, Luis Ridao luri...@gmail.com wrote: David, Thanks for your tip but it seems I'm having problems with the number of columns R manages to read in. Below it s an example of the data read in: inp[1:20,] V1 V2 V3 V4 V5 V6 V7 V8 V9 1 1. log_fy_coff -1.007600 0.119520 1. NA NA NA 2 2. log_fy_coff -0.935010 0.112840 0.8896 1. NA NA 3 3. log_fy_coff -0.876260 0.107500 0.8219 0.8847 1. NA NA 4 4. log_fy_coff -0.683090 0.103030 0.7656 0.8143 0.8747 1. NA 5 5. log_fy_coff -0.623500 0.100980 0.7206 0.7636 0.8086 0.8764 1. 6 6. log_fy_coff -0.583330 0.098978 0.6819 0.7214 0.7615 0.8150 0.8762 7 1. NA NA NA NA NA NA 8 7. log_fy_coff -0.676790 0.096608 0.6521 0.6892 0.7254 0.7719 0.8148 9 0.8717 1. NA NA NA NA NA NA 10 8. log_fy_coff -0.696060 0.093761 0.6297 0.6654 0.6988 0.7405 0.7750 11 0.8116 0.8643 1.00 NA NA NA NA NA 12 9. log_fy_coff -0.527060 0.089949 0.6003 0.6347 0.6667 0.7060 0.7367 as you see there are only 9 columns in inp and the rest is read in in the following row(see row 7) I just don't understand why this is happening (using fill=T does not help either) Best, Luis On Tue, Mar 15, 2011 at 5:15 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 15, 2011, at 1:11 PM, rex.dw...@syngenta.com wrote: I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) I would have suggested: mycols - rep(NULL, 430) ; mycols[1:5] - rep(numeric, 5) inp - read.table(myfile, skip=2, colClasses=mycols) head(inp) -- David. Any suggestions? -- -- Sarah Goslee http://www.functionaldiversity.org __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to read only specified columns from a data file
David, Thanks for your tip but it seems I'm having problems with the number of columns R manages to read in. Below it s an example of the data read in: inp[1:20,] V1 V2V3 V4 V5 V6 V7 V8 V9 1 1. log_fy_coff -1.007600 0.119520 1. NANA NA 2 2. log_fy_coff -0.935010 0.112840 0.8896 1.NA NA 3 3. log_fy_coff -0.876260 0.107500 0.8219 0.8847 1. NA NA 4 4. log_fy_coff -0.683090 0.103030 0.7656 0.8143 0.8747 1. NA 5 5. log_fy_coff -0.623500 0.100980 0.7206 0.7636 0.8086 0.8764 1. 6 6. log_fy_coff -0.583330 0.098978 0.6819 0.7214 0.7615 0.8150 0.8762 7 1.NA NA NA NANA NA 8 7. log_fy_coff -0.676790 0.096608 0.6521 0.6892 0.7254 0.7719 0.8148 9 0.8717 1.NA NA NA NANA NA 10 8. log_fy_coff -0.696060 0.093761 0.6297 0.6654 0.6988 0.7405 0.7750 11 0.8116 0.8643 1.00 NA NA NANA NA 12 9. log_fy_coff -0.527060 0.089949 0.6003 0.6347 0.6667 0.7060 0.7367 as you see there are only 9 columns in inp and the rest is read in in the following row(see row 7) I just don't understand why this is happening (using fill=T does not help either) Best, Luis On Tue, Mar 15, 2011 at 5:15 PM, David Winsemius dwinsem...@comcast.net wrote: On Mar 15, 2011, at 1:11 PM, rex.dw...@syngenta.com wrote: I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) I would have suggested: mycols - rep(NULL, 430) ; mycols[1:5] - rep(numeric, 5) inp - read.table(myfile, skip=2, colClasses=mycols) head(inp) -- David. Any suggestions? Thanks in advance __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. message may contain confidential information. If you are not the designated recipient, please notify the sender immediately, and delete the original and any copies. Any use of the message by you is prohibited. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to read only specified columns from a data file
I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) Any suggestions? Thanks in advance __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. message may contain confidential information. If you are not the designated recipient, please notify the sender immediately, and delete the original and any copies. Any use of the message by you is prohibited. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] How to read only specified columns from a data file
On Mar 15, 2011, at 1:11 PM, rex.dw...@syngenta.com wrote: I think you need to read an introduction to R. For starters, read.table returns its results as a value, which you are not saving. The probable answer to your question: Read the whole file with read.table, and select columns you need, e.g.: tab - read.table(myfile, skip=2)[,1:5] -Original Message- From: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org ] On Behalf Of Luis Ridao Sent: Tuesday, March 15, 2011 11:53 AM To: r-help@r-project.org Subject: [R] How to read only specified columns from a data file R-help, I'm trying to read a data file with plenty of columns. I just need the first 5 but it doe not work by doing something like: mycols - rep(NULL, 430) ; mycols[c(1:4)] - NA read.table(myfile, skip=2, colClasses=mycols) I would have suggested: mycols - rep(NULL, 430) ; mycols[1:5] - rep(numeric, 5) inp - read.table(myfile, skip=2, colClasses=mycols) head(inp) -- David. Any suggestions? Thanks in advance __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. message may contain confidential information. If you are not the designated recipient, please notify the sender immediately, and delete the original and any copies. Any use of the message by you is prohibited. __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code. David Winsemius, MD West Hartford, CT __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
