On 09/08/14 06:25, Fix Ace wrote:
I have 16 files and would like to check the information of their first two
lines, what I did:
ls(pattern="P_")
[1] "P_3_utr_source_data" "P_5_utr_source_data"
[3] "P_exon_per_gene_cds_source_data" "P_exon_per_gene_source_data"
[5] "P_exon_source_data" "P_first_exon_oncds_source_data"
[7] "P_first_intron_oncds_source_data" "P_first_intron_ongene_source_data"
[9] "P_firt_exon_ongene_source_data" "P_gene_cds_source_data"
[11] "P_gene_source_data" "P_intron_source_data"
[13] "P_last_exon_oncds_source_data" "P_last_exon_ongene_source_data"
[15] "P_last_intron_oncds_source_data" "P_last_intron_ongene_source_data"
<SNIP>
Point of order: You do ***NOT*** have 16 files as it stands. The
output from ls() indicates that you have 16 ***objects*** (presumably
data frames) in your "work space" or "global environment". (If the data
were originally in 16 separate files, these files have apparently
already been read into R.)
If you are going to use R, learn to distinguish the relevant concepts
and to use the appropriate terminology. Otherwise you will confuse
everyone, including yourself, and get things totally wrong. It is
really no more difficult to use correct terminology than it is to use
incorrect terminology --- and the former has the advantage of not
misleading all concerned.
Dave Winsemius has already told you how to solve your immediate problem,
using get().
cheers,
Rolf Turner
--
Rolf Turner
Technical Editor ANZJS
______________________________________________
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.
