R : gpplot2 breaks and labels

[Abdullah Sahyoun]

Hi,

Im trying to plot some data using ggplot2 and stat_contout, but im having a problem which im not able to understand.

the plotting is something like that :

dataf$pval.d <- cut(dataf$pvalue, breaks=c(min(dataf$X),0.05,Inf), 
                    labels=c("min","0.05"), right = FALSE)

pl <-ggplot(dataf) + 
         geom_tile(aes(fill=C,A,B)) + 
         stat_contour(breaks = c(min(dataf$X),0.05),
                      aes(x=A,y=B,z=pvalue,colour = ..level..)) + 
         scale_colour_gradient2(low="black",mid="black",high="green",
            labels=paste(levels(dataf$pval.d),table(dataf$pval.d)),
            name="\n P-value \n")

but the plot is giving me this error:

Error in scale_labels.continuous(scale, breaks) :
  Breaks and labels are different lengths


eventhough when i print the output of a part of the summary of the plot:

> summary(pl)

mapping: x = A y = B z = pvalue colour = ..level..
geom_path: na.rm = FALSE
stat_contour: breaks = c(0.0231001371742112, 0.05)
position_identity: (width = NULL, height = NULL)


the breaks length seems to be of lenght = 2


and the same applies when i output

> paste(levels(dataf$pval.d),table(dataf$pval.d))

[1] "min 0"   "0.05 10"



NOTE: if i remove the breaks from stat_contour or the labels from scale_colour_gradient2, the plots works fine.

any help would be appreciated.

[Ista Zahn]

Hi,

You will probably have better luck getting an answer if you post a
reproducible example,

Best,
Ista

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