Barry Rowlingson <B.Rowlingson <at> lancaster.ac.uk> writes:
> > None of these seem to read non-coniguous variables from columns; or > > may be I am missing something. "read.fwf" is not meant for large > > files according to a post in the archives. Thanks for the pointers. I > > have read the R data input and output. Anupam. > > First up, how 'large' is your 'large ASCII file'? How many rows and > columns? There are 356,112 records, 326 variables, fixed record length of 1283 positions. Zipped file is 42MB. There are no field (variable) separaters (delimiters). > Secondly, what are 'non-contiguous' variables? Variables that are not in adjoining positions in the file: reading them from the file would require skipping columns while reading. For example, below are the start positions of the first three variables I would like to read. StartingColumn VariableName FieldLength 1 STATE 2 24 INTVID 3 30 PSU 10 > Perhaps if you posted the first few lines and columns of the file then > we might get an idea of how to read it in. Because a record (row) of the file is 1283 columns, I would not like to post it here. Thank you for your response. Anupam. ______________________________________________ R-help@stat.math.ethz.ch 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.
