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FR: variable.factor toggle for melt.array #76

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franknarf1 opened this issue Mar 8, 2016 · 0 comments
Open

FR: variable.factor toggle for melt.array #76

franknarf1 opened this issue Mar 8, 2016 · 0 comments

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@franknarf1
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Suppose you want to extract the upper triangle of a correlation matrix (example on SO). I would try...

melt(m) %>% filter(Var2 > Var1)

but inequalities don't work with factors. Maybe a variable.factor toggle can be added to melt, as in melt.data.table.
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