[R] ggplot facet and subsetting

Thu Nov 27 14:14:01 CET 2014

Thank you Thierry

Still I wonder why without facet_grid code

for (i in n:m) { p<-ggplot(data, aes(x=x, y=data[,i], colour=f))), ...}

works

and with facet_grid does not.

Best regards
Petr

> -----Original Message-----
> From: ONKELINX, Thierry [mailto:Thierry.ONKELINX at inbo.be]
> Sent: Thursday, November 27, 2014 9:29 AM
> To: PIKAL Petr; R help
> Subject: RE: ggplot facet and subsetting
>
> Dear Petr,
>
> You need to use aes_string() instead of aes().
>
> The.cols <- colnames(data)[n:m]
> for (i in The.cols) { p<-ggplot(data, aes_string(x="x", y= i,
> colour="f"))), ...}
>
> Best regards,
>
> ir. Thierry Onkelinx
> Instituut voor natuur- en bosonderzoek / Research Institute for Nature
> and Forest team Biometrie & Kwaliteitszorg / team Biometrics & Quality
> Assurance Kliniekstraat 25 1070 Anderlecht Belgium
> + 32 2 525 02 51
> + 32 54 43 61 85
> Thierry.Onkelinx at inbo.be
> www.inbo.be
>
> To call in the statistician after the experiment is done may be no more
> than asking him to perform a post-mortem examination: he may be able to
> say what the experiment died of.
> ~ Sir Ronald Aylmer Fisher
>
> The plural of anecdote is not data.
> ~ Roger Brinner
>
> The combination of some data and an aching desire for an answer does
> not ensure that a reasonable answer can be extracted from a given body
> of data.
> ~ John Tukey
>
> -----Oorspronkelijk bericht-----
> Van: R-help [mailto:r-help-bounces at r-project.org] Namens PIKAL Petr
> Verzonden: woensdag 26 november 2014 14:40
> Aan: R help
> Onderwerp: [R] ggplot facet and subsetting
>
> Dear all
>
> I encountered strange behaviour of ggplot with combination of facet and
> subsetting. I use for creating plots sometimes a for cycle, something
> like this
>
> for (i in n:m) { p<-ggplot(data, aes(x=x, y=data[,i], colour=f))), ...}
>
> However I found strange result with this combination
>
> This is OK but only in BW
> p<-ggplot(vec.c, aes(x=fi, y=nad1mi))
> p+geom_point(size=5)+geom_line()+facet_grid(.~stroj)
>
> this is OK with colour
> p<-ggplot(vec.c, aes(x=fi, y=nad1mi, colour=as.factor(cas)))
> p+geom_point(size=5)+geom_line()+facet_grid(.~stroj)
>
> Here results in facets are mismatched
> p<-ggplot(vec.c, aes(x=fi, y=vec.c[,2], colour=as.factor(cas)))
> p+geom_point(size=5)+geom_line()+facet_grid(.~stroj)
>
> and this is mismatched too
> p<-ggplot(vec.c, aes(x=fi, y=vec.c[,2]))
> p+geom_point(size=5)+geom_line()+facet_grid(.~stroj)
>
> Doeas anybody know what I am doing wrong?
>
> > dput(vec.c)
> structure(list(cas = c(1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 0L, 1L,
> 2L, 0L, 1L, 2L, 0L, 1L, 2L, 0L, 1L, 2L, 0L, 1L, 2L, 0L, 1L, 2L, 0L, 1L,
> 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L, 1L, 2L),
>     nad1mi = c(3, 2.7, 0.3, 0.5, 1.9, 5.3, 0.4, 3, 5.4, 0.7,
>     20.6, 16.7, 16.6, 20.7, 16.1, 15.2, 20.5, 16.4, 14.8, 24.6,
>     19.3, 15.2, 26.9, 21.3, 20.6, 22.6, 16.3, 15.7, 19.3, 16.5,
>     15.5, 3.6, 3.4, 5.9, 4.6, 5.4, 4.2, 5.3, 5.6, 5.1, 5), stroj =
> structure(c(3L,
>     3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 3L, 1L, 1L, 1L, 1L, 1L, 1L,
>     1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L, 1L,
>     2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L, 2L), .Label = c("mastersizer",
>     "odstredivka", "zetasizer"), class = "factor"), fi = c(341L,
>     341L, 285L, 285L, 401L, 401L, 231L, 231L, 190L, 190L, 341L,
>     341L, 341L, 285L, 285L, 285L, 401L, 401L, 401L, 231L, 231L,
>     231L, 190L, 190L, 190L, 167L, 167L, 167L, 161L, 161L, 161L,
>     341L, 341L, 285L, 285L, 401L, 401L, 231L, 231L, 190L, 190L
>     )), .Names = c("cas", "nad1mi", "stroj", "fi"), class =
> "data.frame", row.names = c(1L, 2L, 6L, 7L, 11L, 12L, 16L, 17L, 21L,
> 22L, 26L, 27L, 28L, 32L, 33L, 34L, 38L, 39L, 40L, 44L, 45L, 46L, 50L,
> 51L, 52L, 56L, 57L, 58L, 62L, 63L, 64L, 68L, 69L, 73L, 74L, 78L, 79L,
> 83L, 84L, 88L,
> 89L))
> >
>
> Regards
> Petr
>
> > sessionInfo(package = NULL)
> R Under development (unstable) (2014-07-16 r66175)
> Platform: i386-w64-mingw32/i386 (32-bit)
>
> locale:
> [1] LC_COLLATE=Czech_Czech Republic.1250  LC_CTYPE=Czech_Czech
> Republic.1250 [3] LC_MONETARY=Czech_Czech Republic.1250 LC_NUMERIC=C
> [5] LC_TIME=Czech_Czech Republic.1250
>
> attached base packages:
> [1] stats     datasets  utils     grDevices graphics  methods   base
>
> other attached packages:
> [1] ggplot2_1.0.0   lattice_0.20-29 fun_1.0
>
> loaded via a namespace (and not attached):
>  [1] colorspace_1.2-4 digest_0.6.4     grid_3.2.0       gtable_0.1.2
>  [5] labeling_0.2     MASS_7.3-33      munsell_0.4.2    plyr_1.8.1
>  [9] proto_0.3-10     Rcpp_0.11.2      reshape2_1.4     scales_0.2.4
> [13] stringr_0.6.2    tools_3.2.0
> >
>
> ________________________________

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