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jawagl
2008 Sep 04
1
how to match or merge data.frames in this case...
Hi,
I'm trying to match two data frames in order to replace the boundary values
in a dataframe.1 with values in dataframe.2 ONLY where the pair id1 id2
matches between the two data frames.
Eg.
> dataframe.1
... id1 id2 boundary
3307 1095 1108 438.691
3308 1095 1109 438.691
3309 1095 1121 438.691
3310 1096 1109 438.691
...
3345 1108 1120 438.691
3346 1108 1121 438.691
3347 1108