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i_str
2010 Jun 04
1
How do I 'merge' a altered subset of a data.frame back into the same data.frame
Hi
Step 1: I create a data.frame called iolm.
Step 2: I create a conditional subset i_wtr.
Step 3: In this subset I add 0.3 to all values in the IOLM_AST column.
Step 4: Now I am looking for the best way to Œmerge¹ the altered subset back
into the original iolm data.frame
## STEP 1
>iolm
ID IOLM_AST IOLM_AXIS
1 1 1.15 165.33
2 2 1.20 79.00
3 3 0.4...