i have one file as> munnabhai<-read.table(hyphen[1],skip=1)
> munnabhai
V1 V2 V3 V4 V5 V6 V7
1 1 12AS_A 4 A 0.00000 157.8994119 2
2 2 12AS_A 5 Y -41.61818 -56.8011795 1
3 3 12AS_A 6 I -55.47021 -51.1328352 1
4 4 12AS_A 7 A -54.43085 -58.3428366 1
5 5 12AS_A 8 K -54.31525 -39.2709474 1
6 6 12AS_A 9 Q -61.37700 -33.5304490 1
7 7 12AS_A 10 R -86.14173 -32.3448242 1
8 8 12AS_A 11 Q -52.88589 -57.2830246 1
want to read v7 vector & add V8,
& edit it as in the same file
V1 V2 V3 V4 V5 V6 V7 V8
1 1 12AS_A 4 A 0.00000 157.8994119 2 2.3
2 2 12AS_A 5 Y -41.61818 -56.8011795 1 45.5
3 3 12AS_A 6 I -55.47021 -51.1328352 1 78.5
4 4 12AS_A 7 A -54.43085 -58.3428366 1 7.3
5 5 12AS_A 8 K -54.31525 -39.2709474 1 8.9
6 6 12AS_A 9 Q -61.37700 -33.5304490 1 4.5
7 7 12AS_A 10 R -86.14173 -32.3448242 1 7.3
8 8 12AS_A 11 Q -52.88589 -57.2830246 1 1.0
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