I'm trying to work out a function which will allow me to relace column names on the basis of substrings within the existing names. e.g.
I'd like:
blah.Na blah2.Na blah3.Mg blah4.Mg blah5.K blah6.K R1 x x x x x x R2 x x x x x x ...
to become:
Na (%) Na (%) Mg (%) Mg (%) K (ppm) K (ppm) R1 x x x x x x R2 x x x x x x ...
So based on whether the existing column name has a .Na or a .K etc. in it somewhere, I'd like it to be replaced with a name which I can provide i.e. Na (%) or K (%).
So far I can't even figure out how to replace a column name:
aa[colnames(aa)=="blah3.Mg"]_colnames("Mg (%)")Error in matrix(value, n, p) : No data to replace in matrix(...)
help please Cheers Jeremy
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