[R] Trouble with arguments to 'order'
I have an Excel worksheet with 20 rows. Using XLConnect I successfully read the data into 'indata'. In order to sort it on the 'Item' column and the 'Price_Per_Item' column I submit: index - with(indata, order(Item, Price_Per_Item)) sortedData - indata[index, ] The above works fine but now I do not want to name the columns in the R program directly but pass the names of the columns from a parameter file: index - with(indata, order(parameters$ItemColumn, parameters$PriceColumn)) sortedData - indata[index, ] This does not work. Only one row appears in 'sortedData'. I've tried unlisting the two arguments to 'order' but this does not correct the problem. Can anyone suggest a solution to my problem? Your assistance is appreciated. - Barry King -- __ *Barry E. King, Ph.D.* Director of Retail Operations Qualex Consulting Services, Inc. barry.k...@qlx.com O: (317)940-5464 M: (317)507-0661 __ [[alternative HTML version deleted]] __ 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] Trouble with arguments to 'order'
On May 28, 2013, at 08:06 , Barry King wrote: I have an Excel worksheet with 20 rows. Using XLConnect I successfully read the data into 'indata'. In order to sort it on the 'Item' column and the 'Price_Per_Item' column I submit: index - with(indata, order(Item, Price_Per_Item)) sortedData - indata[index, ] The above works fine but now I do not want to name the columns in the R program directly but pass the names of the columns from a parameter file: index - with(indata, order(parameters$ItemColumn, parameters$PriceColumn)) sortedData - indata[index, ] This does not work. Only one row appears in 'sortedData'. I've tried unlisting the two arguments to 'order' but this does not correct the problem. Can anyone suggest a solution to my problem? Your assistance is appreciated. Nothing to do with order as such, but parameters$ItemColumn is presumably a character value (vector of length 1). So you seem to be effectively doing order(A,B) which is the constant 1. You need to spell out your intentions: order(indata[[parameters$ItemColumn]], indata[[parameters$PriceColumn]]) or maybe do.call(order, indata[unlist(parameters[c(ItemColumn,PriceColumn)])]) (both untested) -- Peter Dalgaard, Professor, Center for Statistics, Copenhagen Business School Solbjerg Plads 3, 2000 Frederiksberg, Denmark Phone: (+45)38153501 Email: pd@cbs.dk Priv: pda...@gmail.com __ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
Re: [R] Trouble with arguments to 'order'
If I understand your problem correctly, you want to use '[[' instead of '$': order(parameters[[ItemColumn]], parameters[[PriceColumn]]) On 28/05/2013 07:06, Barry King wrote: I have an Excel worksheet with 20 rows. Using XLConnect I successfully read the data into 'indata'. In order to sort it on the 'Item' column and the 'Price_Per_Item' column I submit: index - with(indata, order(Item, Price_Per_Item)) sortedData - indata[index, ] The above works fine but now I do not want to name the columns in the R program directly but pass the names of the columns from a parameter file: index - with(indata, order(parameters$ItemColumn, parameters$PriceColumn)) sortedData - indata[index, ] This does not work. Only one row appears in 'sortedData'. I've tried unlisting the two arguments to 'order' but this does not correct the problem. Can anyone suggest a solution to my problem? Your assistance is appreciated. - Barry King -- Patrick Burns pbu...@pburns.seanet.com twitter: @burnsstat @portfolioprobe http://www.portfolioprobe.com/blog http://www.burns-stat.com (home of: 'Impatient R' 'The R Inferno' 'Tao Te Programming') __ 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] Trouble with arguments to 'order'
Thank you for your assistance. I went with Peter's solution. All is working well now. - Barry On Tue, May 28, 2013 at 4:12 AM, Patrick Burns pbu...@pburns.seanet.comwrote: If I understand your problem correctly, you want to use '[[' instead of '$': order(parameters[[ItemColumn**]], parameters[[PriceColumn]]) On 28/05/2013 07:06, Barry King wrote: I have an Excel worksheet with 20 rows. Using XLConnect I successfully read the data into 'indata'. In order to sort it on the 'Item' column and the 'Price_Per_Item' column I submit: index - with(indata, order(Item, Price_Per_Item)) sortedData - indata[index, ] The above works fine but now I do not want to name the columns in the R program directly but pass the names of the columns from a parameter file: index - with(indata, order(parameters$ItemColumn, parameters$PriceColumn)) sortedData - indata[index, ] This does not work. Only one row appears in 'sortedData'. I've tried unlisting the two arguments to 'order' but this does not correct the problem. Can anyone suggest a solution to my problem? Your assistance is appreciated. - Barry King -- Patrick Burns pbu...@pburns.seanet.com twitter: @burnsstat @portfolioprobe http://www.portfolioprobe.com/**blog http://www.portfolioprobe.com/blog http://www.burns-stat.com (home of: 'Impatient R' 'The R Inferno' 'Tao Te Programming') -- __ *Barry E. King, Ph.D.* Director of Retail Operations Qualex Consulting Services, Inc. barry.k...@qlx.com O: (317)940-5464 M: (317)507-0661 __ [[alternative HTML version deleted]] __ 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.
