[R] Help reading matrixmarket files

[Uwe Ligges]

On 28.12.2012 17:28, Brad Cox wrote:
> Could someone please approve this message? Thanks!

Approve?


> On Thu, Dec 27, 2012 at 4:38 PM, Brad Cox <bradjcox at gmail.com> wrote:
>
>> I'm trying to read data a program produces in matrixmarket array format
>> into R and its giving me fits. I've tried read.MM (below) and readMM (from
>> the Matrix package) but neither works. One of them says array format isn't
>> supported, the other reports something indecipherable about Fortran.
>>
>> Here's the file contents. Can't get much simpler than that!
>>
>> %%MatrixMarket matrix array real general
>>> %This file contains LIBFM global mean which is required for computing
>>> predictions.
>>> 1 1
>>> 1.786238830716e-02
>>
>>
>> Can someone please help? Seems such a simple problem.
>>
>>
>>>> library(spam)
>>> Spam version 0.29-2 (2012-08-17) is loaded.
>>> Type 'help( Spam)' or 'demo( spam)' for a short introduction
>>> and overview of this package.
>>> Help for individual functions is also obtained by adding the
>>> suffix '.spam' to the function name, e.g. 'help( chol.spam)'.
>>> Attaching package: ‘spam’
>>> The following object(s) are masked from ‘package:base’:
>>>      backsolve, forwardsolve
>>>> x=read.MM("/Users/brad/Dropbox/graphchi/2008.csv_global_mean.mm")
>>> Error in read.MM("/Users/brad/Dropbox/graphchi/2008.csv_global_mean.mm")
>>> :
>>>    invalid mode (list) to pass to Fortran (arg 8)


If read.MM does not work and you are sure about the file location and it 
is in the right format, send an example file that reproduced the error 
to the maintainer of the package with the broken import function (or 
right away  patched version of the broken function).

Uwe Ligges



>>
>>
>
>
>
>
> ______________________________________________
> R-help at 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.
>