Re: [R] R Error, very odd....
I received the same error message. With me, the problem was that I had the cells in my CSV file in Excel formatted as percentages. R read them as factors and not as numeric values. After changing the cell format from percentage to general in Excel, the problem was solved. -- View this message in context: http://r.789695.n4.nabble.com/R-Error-very-odd-tp887545p4670026.html Sent from the R help mailing list archive at Nabble.com. __ 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] R Error, very odd....
I had the exact same error message, and figured out that the problem was coming from one of my cell being filled with a Na instead of a NA. -- View this message in context: http://r.789695.n4.nabble.com/R-Error-very-odd-tp887545p4632492.html Sent from the R help mailing list archive at Nabble.com. __ 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] R Error, very odd....
Katie2009 wrote: I'm trying to analyse some excel data in R. The problem is that when i input the data with the first column as absolute values, everything works fine, can analyse as normal. When I leave the first column unchanged to import negative numbers as well I get: Error in storage.mode(y) - double : invalid to change the storage mode of a factor In addition: Warning message: In model.response(mf, numeric) : using type=numeric with a factor response will be ignored You did not tell us anything how you got the data from Excel, so I have to guess. Try to re-arrange your Excel row so that the first (3 ? check the docs; which docs? your unknown function's) lines contain non-missing data. Dieter -- View this message in context: http://www.nabble.com/R-Error%2C-very-odd-tp23477195p23478090.html Sent from the R help mailing list archive at Nabble.com. __ 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] R Error, very odd....
Katie2009 wrote: hi dieter, the method i'm using is in excel, copying the data, then in r w-read.delim(clipboard) w-as.data.frame(w) i've been doing a bit more fiddling, and have identified the 'class' of the column that i'm having trouble with, is classified as 'factor' whilst the rest are numeric. read.delim internally uses the same function as read.table, so you might consult that documentation: The number of data columns is determined by looking at the first five lines of input (or the whole file if it has less than five lines), or from the length of col.names if it is specified and is longer. This could conceivably be wrong if fill or blank.lines.skip are true, so specify col.names if necessary. So if the first lines are unusual, many things can happen. However, reading from the clipboard is not a very stable way to get Excel data; I would suggest to use library(RODBC) instead, or one of the other Excel readers. With RODBC, use named ranges, not worksheet names for a stable import. Dieter -- View this message in context: http://www.nabble.com/R-Error%2C-very-odd-tp23477195p23478576.html Sent from the R help mailing list archive at Nabble.com. __ 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] R Error, very odd....
hi dieter, the method i'm using is in excel, copying the data, then in r w-read.delim(clipboard) w-as.data.frame(w) i've been doing a bit more fiddling, and have identified the 'class' of the column that i'm having trouble with, is classified as 'factor' whilst the rest are numeric. if i just change that column to as.numeric of the column, this has appeared to have solved the problem. Has this changed that data at all though? Thanks. Dieter Menne wrote: Katie2009 wrote: I'm trying to analyse some excel data in R. The problem is that when i input the data with the first column as absolute values, everything works fine, can analyse as normal. When I leave the first column unchanged to import negative numbers as well I get: Error in storage.mode(y) - double : invalid to change the storage mode of a factor In addition: Warning message: In model.response(mf, numeric) : using type=numeric with a factor response will be ignored You did not tell us anything how you got the data from Excel, so I have to guess. Try to re-arrange your Excel row so that the first (3 ? check the docs; which docs? your unknown function's) lines contain non-missing data. Dieter -- View this message in context: http://www.nabble.com/R-Error%2C-very-odd-tp23477195p23478471.html Sent from the R help mailing list archive at Nabble.com. __ 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] R Error, very odd....
At 12:37 AM -0700 5/11/09, Katie2009 wrote: hi dieter, the method i'm using is in excel, copying the data, then in r w-read.delim(clipboard) w-as.data.frame(w) i've been doing a bit more fiddling, and have identified the 'class' of the column that i'm having trouble with, is classified as 'factor' whilst the rest are numeric. if i just change that column to as.numeric of the column, this has appeared to have solved the problem. Has this changed that data at all though? Well, you can look at the data to find out. Either just print it, or perhaps use simple exploration techniques, such as unique( column) table(column) summary(column) compare before and after converting to numeric In general, changing a factor to numeric can change the data relative to what you might think the data actually is. Here is an example: tmp1 - c(-1,0,1) tmp2 - factor(tmp1) tmp3 - as.numeric(tmp2) tmp1 [1] -1 0 1 tmp2 [1] -1 0 1 Levels: -1 0 1 tmp3 [1] 1 2 3 tmp3 is clearly not the same as tmp1. tmp4 - as.numeric(format(tmp2)) tmp4 [1] -1 0 1 Evidently, R is creating a factor from a column that you think is numeric. Your job is to find out why. I would guess that you have, somewhere in the column, an entry that isn't a number. Perhaps a typographical error in the spreadsheet column. The effect of inputting as absolute values vs with negative numbers should give a clue to that. Try tmp - as.numeric(format( column )) any(is.na(tmp)) and if that is TRUE, then column[is.na(tmp)] -Don Thanks. Dieter Menne wrote: Katie2009 wrote: I'm trying to analyse some excel data in R. The problem is that when i input the data with the first column as absolute values, everything works fine, can analyse as normal. When I leave the first column unchanged to import negative numbers as well I get: Error in storage.mode(y) - double : invalid to change the storage mode of a factor In addition: Warning message: In model.response(mf, numeric) : using type=numeric with a factor response will be ignored You did not tell us anything how you got the data from Excel, so I have to guess. Try to re-arrange your Excel row so that the first (3 ? check the docs; which docs? your unknown function's) lines contain non-missing data. Dieter -- View this message in context: http:// www. nabble.com/R-Error%2C-very-odd-tp23477195p23478471.html Sent from the R help mailing list archive at Nabble.com. __ 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. -- -- Don MacQueen Environmental Protection Department Lawrence Livermore National Laboratory Livermore, CA, USA 925-423-1062 __ 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.
