Looks like the data frame needs to be reshaped before being given to
ggplot.
"melt" function from the "reshape2" package, or "gather" function from
"tidyr" package are good tools for this.
On Sun, 7 Feb 2016, Ulrik Stervbo wrote:
Hi Stefano,
you try to facet on 'variable' and 'scales' whic
Hi Stefano,
you try to facet on 'variable' and 'scales' which aren't part of your
data.frame as far as I can see. The error 'At least one layer must contain
all variables used for facetting' also tells you this - that at least one
of the variables you use for facetting are missing.
Hope this help
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