Subset data starting with... in R

Asked Jul 06 '16 at 18:37

Active Jul 06 '16 at 18:37

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I want to subset a data frame to only keep lines (samples) that one of the column value starts with "GC" in R. Here's an example:

Species A Species B Species C SYTD Lat  Long
1         5         0         IS14 47.5 -55.4
2         2         1         IS15 47.5 -55.3
0         1         4         GC14 47.6 -55.3
3         2         3         GC15 47.6 -55.2

How to keep all columns but only lines which "SYTD" starts with "GC"?

asked Jul 06 '16 at 18:37

Mud Warrior

for a data.frame named df, use `df[grepl("^GC", df$SYTD),]` – lmo Jul 06 '16 at 18:42
Yes it works well thanks. Sorry for the duplicate, I searched for a while but couldn't find the proper answer. – Mud Warrior Jul 06 '16 at 18:58

Subset data starting with... in R

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