Thank you very much!
I used indeed rgl.
The problem was apperently that I used text3d() in the wrong way.
When I use it this way:
plot3d(x, y, z,xlab="PC1", ylab="PC2", zlab="PC3", size=5)
text3d(x=x,y=y,z=z,texts=names, col=4)
It workes the way I wanted.
So thanks again and have a nice weekend!
Best regards
Claudia
Zitat von Duncan Murdoch <murdoch.dun...@gmail.com>:
On 28/03/2014 6:51 AM, palad...@trustindata.de wrote:
Hello,
I want to draw 3D plot. The coordinates should be inticated with a
red point and additional I want to label them with a name.
I tried this:
plot3d(x, y, z,xlab="PC1", ylab="PC2", zlab="PC3",main="Country
score resemblance (Stoxx600 rated by
Vigeo)",text3d(x=x,y=y,z=z,texts=names, col=4))
plot3d(x, y, z, col=2, size=3, add=TRUE)
It looks as though you are using rgl. If you found plot3d in some
other package, then this advice might not apply.
Putting the text3d() call within the plot3d call doesn't make sense.
It should be a separate call.
You should probably use points3d() to add points rather than
plot3d(add=TRUE), but there isn't really much difference.
rgl decides what is visible in a fairly complicated way. The
default is that things that are closer to the viewer hide things
that are further away, but if two things are at the same distance,
the first one wins. So I would guess that your text is hiding the
red points. It is possible to modify this rule using the
material3d() property "depth_test", but I would advise against doing
that.
Plot your text at a different location than your points if you don't
want one to obscure the other. You can use the "adj" parameter to
text3d() to offset the text.
Duncan Murdoch
and some variations of this code but in the end you see only the names
but no red point.
What did I get wrong?
It would be nice if somebody can help me.
Best regards and thanking you in anticipation
Claudia
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