[R] Reading fixed column format
AnupTyagi at yahoo.com
Wed Sep 13 07:48:47 CEST 2006
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
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
Thank you for your response.
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