Setting up a new palette() in R: need to call palette(rainbow(N)) twice -


i drawing plots within loop, , every plot needs new palette according number of elements in plot.

i'm puzzled fact palette(rainbow(i)) not have immediate effect. instead, have call twice.

for instance, not work:

for(i in 10:20){     colors <- palette(rainbow(i))     if (i !=length(colors)){cat("\nnumber of colors not match",                                  i,"-",  length(colors))} }  number of colors not match 10 - 20 number of colors not match 11 - 10 number of colors not match 12 - 11 number of colors not match 13 - 12 number of colors not match 14 - 13 number of colors not match 15 - 14 number of colors not match 16 - 15 number of colors not match 17 - 16 number of colors not match 18 - 17 number of colors not match 19 - 18 number of colors not match 20 - 19

to make sure set new palette, have call twice:

for(i in 10:20){     colors <- palette(rainbow(i))     colors <- palette(rainbow(i))     if (i !=length(colors)){cat("\nnumber of colors un match",                                   i,"-",  length(colors))} }

is bug or i'm using palette in wrong way?


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