plotCopa {copa} | R Documentation |
This function can be used to visualize pairs of genes that may be involved in recurrent gene fusion in cancer.
plotCopa(copa, idx, lib = NULL, sort = TRUE, col = NULL, legend = NULL)
copa |
An object of class 'copa', resulting from a call to the copa
function. |
idx |
A numeric vector listing the gene pairs to plot (e.g., idx = 1:3 will plot the first three gene pairs). |
lib |
If the underlying data are Affymetrix expression values,
one can specify an annotation package and the plot labels will be
extracted from the xxxSYMBOL environment. If NULL , the
row.names of the gene expression matrix will be used. |
sort |
Boolean. Should the data be sorted before plotting?
Defaults to TRUE . |
col |
A vector of color names or numbers to be used for coloring the different samples in the resulting barplot. |
legend |
A vector of terms describing the two sample types (e.g.,
'Normal' and 'Tumor'). Defaults to NULL |
Note that this function will output all the gene pairs in the idx
vector without pausing. This can be controlled by either setting
par(ask = TRUE), or by redirecting the output to a file (using e.g.,
pdf
, ps
, etc.).
This function is called solely for outputting plots. No values are returned.
James W. MacDonald
Tomlins, SA, et al. Recurrent fusion of TMPRSS2 and ETS transcription factor genes in prostate cancer. Science. 2005 Oct 28;310(5748):644-8.
if(interactive()){ library(Biobase) data(sample.exprSet) cl <- abs(3 - as.numeric(pData(sample.exprSet)[,2])) tmp <- copa(sample.exprSet, cl) plotCopa(tmp, 1, col = c("red", "blue")) }