Re: [R] Re: Use of the Foreign package to import Stata files
Regarding an old version of foreign allegedly being able to read the file at http://www.ats.ucla.edu/stat/stata/examples/rwg/concord1.dta Thomas Lumley [EMAIL PROTECTED] responded to my call for help: I don't know why it used to work. The file begins with 'h' (0x68), which isn't in my list of valid Stata file types. On the other hand, Stata has no problem with it. It's possible that it is a version 4 file (which would make sense, since version 5 file start with 'i' and increase from there) but that wouldn't explain why it used to work. With the stataread package (which predates 0.5-x of foreign) I get Not a Stata version 5-7 data file. Thomas Lumley [EMAIL PROTECTED] continued: I just found an old 1.6.2 (Mac OS/Darwin) lying around and it doesn't recognize the file as a stata file (with foreign 0.5-8) Thomas, My apologies. It turns out that using R 1.6.2 and an old foreign library, I *can't* read the concord1.dta file at that url, though I *can* read a concord1.dta file that I'd downloaded several months ago. So either the archive at www.ats.ucla.edu overwrote good files with bad, or maybe their site doesn't match an alternate source for the same data files. Either way, I'm sorry to have sent you on a wild goose chase. The error was not in your package. Thank you for your prompt replies. alan -- Alan B. Cobo-Lewis, Ph.D. (207) 581-3840 tel Department of Psychology(207) 581-6128 fax University of Maine Orono, ME 04469-5742[EMAIL PROTECTED] http://www.umaine.edu/visualperception __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
[R] Re: Use of the Foreign package to import Stata files
Long ago (Sat, 2 Nov 2002), Bill Hart [EMAIL PROTECTED] wrote: An R newbie here. I am using R 1.6 currently and have (successfully, I think) installed the Foreign package. Tried to import a data file created with Stata 7.0 SE. Had minor problems with syntax then R decided that my file was not really a Stata file. It rejected the file saying 'Not created by Stata 5-7/SE'. Any suggestions on how to convince R that this is really, truly a Stata file? Thomas Lumley ([EMAIL PROTECTED]) responded: You need the version of read.dta that I wrote yesterday after finally obtaining some 7/SE datasets for debugging. If you can compile packages then I can send you the code, otherwise you will have to wait for the next version of the foreign package. But sometimes older works better than newer. The read.dta() function in R 1.7.0's foreign package (package 0.6-3) fails to recognize as a Stata file what seems to be a genuine Stata file, even though R 1.6.2's foreign package (package 0.5-9) imports the same file just work fine. Using R 1.7 and rolling the package back to foreign 0.5 doesn't seem to fix the problem (haven't been able to roll R1.7 all the way back to foreign 0.5-9 yet, just to a newer 0.5 whose binary is still posted on cran). An example of such a Stata file it at http://www.ats.ucla.edu/stat/stata/examples/rwg/concord1.dta Does anyone have a hint or fix? alan -- Alan B. Cobo-Lewis, Ph.D. (207) 581-3840 tel Department of Psychology(207) 581-6128 fax University of Maine Orono, ME 04469-5742[EMAIL PROTECTED] http://www.umaine.edu/visualperception __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Re: Use of the Foreign package to import Stata files
On Mon, 6 Oct 2003, Alan Cobo-Lewis wrote: But sometimes older works better than newer. The read.dta() function in R 1.7.0's foreign package (package 0.6-3) fails to recognize as a Stata file what seems to be a genuine Stata file, even though R 1.6.2's foreign package (package 0.5-9) imports the same file just work fine. Using R 1.7 and rolling the package back to foreign 0.5 doesn't seem to fix the problem (haven't been able to roll R1.7 all the way back to foreign 0.5-9 yet, just to a newer 0.5 whose binary is still posted on cran). An example of such a Stata file it at http://www.ats.ucla.edu/stat/stata/examples/rwg/concord1.dta I don't know why it used to work. The file begins with 'h' (0x68), which isn't in my list of valid Stata file types. On the other hand, Stata has no problem with it. It's possible that it is a version 4 file (which would make sense, since version 5 file start with 'i' and increase from there) but that wouldn't explain why it used to work. With the stataread package (which predates 0.5-x of foreign) I get Not a Stata version 5-7 data file. -thomas __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Re: Use of the Foreign package to import Stata files
On Mon, 6 Oct 2003, Thomas Lumley wrote: On Mon, 6 Oct 2003, Alan Cobo-Lewis wrote: But sometimes older works better than newer. The read.dta() function in R 1.7.0's foreign package (package 0.6-3) fails to recognize as a Stata file what seems to be a genuine Stata file, even though R 1.6.2's foreign package (package 0.5-9) imports the same file just work fine. Are the data correct with 1.6.2? It's looking increasingly strange that foreign ever read these data. The file doesn't seem to have the timestamp field that versions 5-8 include, which should mess up the reading of the rest of the file. -thomas __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
Re: [R] Re: Use of the Foreign package to import Stata files
I just found an old 1.6.2 (Mac OS/Darwin) lying around and it doesn't recognize the file as a stata file (with foreign 0.5-8) -thomas On Mon, 6 Oct 2003, Thomas Lumley wrote: On Mon, 6 Oct 2003, Thomas Lumley wrote: On Mon, 6 Oct 2003, Alan Cobo-Lewis wrote: But sometimes older works better than newer. The read.dta() function in R 1.7.0's foreign package (package 0.6-3) fails to recognize as a Stata file what seems to be a genuine Stata file, even though R 1.6.2's foreign package (package 0.5-9) imports the same file just work fine. Are the data correct with 1.6.2? It's looking increasingly strange that foreign ever read these data. The file doesn't seem to have the timestamp field that versions 5-8 include, which should mess up the reading of the rest of the file. -thomas __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help Thomas Lumley Assoc. Professor, Biostatistics [EMAIL PROTECTED] University of Washington, Seattle __ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
