Hi,
I am doing a 3d pca in R and would like to add the names of the groups to the image.
popn <- round(pca$x[,1])
colour <- popn - min(popn) + 1
pc <- princomp(NormalisedResult)
plot3d(pca$x[,1:3], col=colour, size=5.0)
this is how I create the plot.
When I am using the text3d command to add some text it fails.
text3d=(texts=fileName,col="blue")
Error: unexpected ',' in "text3d=(texts=fileName,"
doing it w.o. the col option give no error, but I can't see any text on the image.
Is there a way of adding the column names to the plot?
Thanks Assa
ok,
I solved the problem by adding the coordinates like this:
text3d(pca$x[,1], pca$x[,2], pca$x[,3], text=fileName,adj = 0.1,
color=setRamp(6), family="serif", font=5, cex=1)
@Sean - thanks for the comment
No problem. The R help pages are quite variable in their usefulness, but they can be helpful when things do not work as expected. I'm glad you got it worked out. As an aside, remember that you can accept your own answer.
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Please tell us how this is related to bioinformatics?
why do you think that principal component analysis is not related to bioinformatics?
Please read the help page for text3d. What you have pasted into your question does not make any sense given what is described in the help page.