splot 'fileplot' using 1:2:3:4 with points palette with labels

hi,

given the following data,

1 1 A 0.2
1 2 B 0.5
2 3 J 0.3

is it possible to plot 'A' with a color corresponding to 0.2, 'B' with
color 0.5, etc. basically, is there a way to make the command in the
subject legal?

thanks in advance!

henry

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