lapply - R how to change dafaframe column name by using listname -


i have list y below. want change first column name of each data frame (rn) name of data frame (sa, ta). y1.

> y $sa           rn  x1   x2   x3  x4   x5  x6 1: timepoint   0 3.75 4.25 4.5 4.75   5 2:      plot 234  304  285 279  256 238  $ta           rn  x7  x8   x9  x10  x11 x12 1: timepoint   0   5 4.25 3.75 4.75 4.5 2:      plot 208 299  272  261  254 218  > y1 $sa           sa  x1   x2   x3  x4   x5  x6 1: timepoint   0 3.75 4.25 4.5 4.75   5 2:      plot 234  304  285 279  256 238  $ta           ta  x7  x8   x9  x10  x11 x12 1: timepoint   0   5 4.25 3.75 4.75 4.5 2:      plot 208 299  272  261  254 218

those list elements data tables, should simple 

y1 <- map(setnames, y, "rn", names(y))

replace "rn" 1 if want index first column instead of column name "rn".


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