Re: Plot3D confusion
- To: mathgroup at smc.vnet.net
- Subject: [mg38632] Re: Plot3D confusion
- From: Bill Rowe <listuser at earthlink.net>
- Date: Wed, 1 Jan 2003 03:40:29 -0500 (EST)
- Sender: owner-wri-mathgroup at wolfram.com
On 12/30/02 at 11:49 PM, wrx at cruzio.com (Warren Rogers) wrote:
>If I try the following:
>
>f[x_,y_]:=Abs[1+(x+Iy)^3]
>
>Plot3D[f[x,y],{x,-1.25,1.25},{y,-1.25,1.25},PlotPoints->40,Mesh->False
>,FaceGrids->All]
In the function you defined above there doesn't appear to be any space between I and y. As written, this is a symbol with name Iy rather than the product of I and sqrt[-1]. Since it is not assigned a numeric value in the call to Plot3D you will get several error messages including one that complains f is not numeric at some set of values.