Well,
persp(x, y, z) does exactly what you asked for: it plots tha matrix z
along the values given by the vectors x and y.
If you need to calculate z values from x and y using some function foo,
outer(x, y, foo) is typically your friend.
Uwe Ligges
On 08.06.2011 16:57, Oliver wrote:
Hello,
say I have a 2D-matrix (indexed by x and y), which contains
z values, which I want to plot over x-y.
Either dotted, or if possible as a landscape.
I tried around with persp and plot3d (from rgl)
and persp3d (from rgl).
I sometimes get something that looks good and a while later, when
trying some new data I need to worry about that again.
Is there something lika a convenience function that
can be used to feed the data into persp, rgl::plot3d and rgl::persp3d?
At least persp3d is picky about the order of the input data,
and I somehow always start again.
(plot3d seems to be most mathcing how I think).
Isn't that a very common case, where my z_x_y = mydata[x,y] ?
Maybe I just don't know the right function that helps me.
Any idea about that?
Ciao,
Oliver
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