Dear Pascal,
I thik you need to define the facets as
facets = ~ Par
Instead of
facets = Par ~ .
The Par ~ . Syntax can be used with facet_grid and not with facet_wrap.
HTH,
Thierry
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ir. Thierry Onkelinx
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-----Oorspronkelijk bericht-----
Van: r-help-boun...@r-project.org [mailto:r-help-boun...@r-project.org] Namens
BOISSON, Pascal
Verzonden: donderdag 26 februari 2009 17:08
Aan: r-help@r-project.org
Onderwerp: [R] gplot problems with faceting
Dear R-Listers,
I am very confused with what seems to be a misuse of the faceting options with
gplot function and I hope you might help me on this.
z contains various simulation results from simulations with different set of
parameters.
I melt my data to have the following data.frame structure :
> str(z)
'data.frame': 12383 obs. of 5 variables:
$ vID : num 1 2 3 4 5 6 7 8 9 10 ...
$ Var : Factor w/ 61 levels ".t",".ASU_1.Biofilm_C",..: 1 1 1 1 1 1
$ Var.Value: num 317 318 319 320 319 ...
$ Par : Factor w/ 7 levels ".Biostyr0d.t_K",..: 1 1 1 1 1 1 1 1
$ Par.Value: num 5 5 5 5 5 5 5 5 5 5 ...
I would like to plot for each couple (Parameter(i), Variable(j)) the plot
Variable(j).value = f(Parameter(i).Value.
I would like to do it step wise and have one set of graphs per Variable.
Then I subset z based on a single variable name eg ".ASU_1.Biofilm_C"
Then I try the following, but I get an error message :
> qp<- qplot(Par.Value, Var.Value, data = z[z$Var==v,], ylab=v,
> geom=c("point","smooth"), method="lm")
> qp<- qp + facet_wrap( facets= Par~ ., scales = "free_x", ncol=length(vPar))
> qp
Erreur dans `[.data.frame`(plot$data, , setdiff(cond, names(df)), drop = FALSE)
:
colonnes non définies sélectionnées
I can have this working by modifying the facets arguments to "Par~Var", and it
does what I want,
But it is not satisfying, and I am confused with this error message.
The same error message happens when I use the full data frame.
Or when I try other mappings like colors = Par
Any idea of what I am doing wrong?
Best regards
Pascal Boisson
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