Problems plotting 3D surface and using manipulate

*To*: mathgroup at smc.vnet.net*Subject*: [mg122121] Problems plotting 3D surface and using manipulate*From*: Adam McGee <mcgee.a.c at googlemail.com>*Date*: Sat, 15 Oct 2011 06:03:32 -0400 (EDT)*Delivered-to*: l-mathgroup@mail-archive0.wolfram.com

Good afternoon, I could really do with some help with this. I have an array containing a series of x, y pairs, and I have a formula which takes these x, y pairs as inputs along with three other variables a, b, & c to calculate the z value. What I need to be able to do is calculate the corresponding z value for each x, y pair, then create a surface through these x, y, z points. I want to be able to use Manipulate with three slider bars to update the values of a, b, and c which in turn update the z calculation and update the plot. The stage I am currently at is as follows: Manipulate [ ListPoint3d [ Table [ functionName [x, y, a, b, c], {x, 10, 40}, {y, 10, 90} ], ColorFunction -> "Rainbow" ], {a, 0, 1}, {b, 0, 1}, {c, 0, 1} ] With the above example I am not using the correct input matrix containing x & y just to try and get it working, but the slider bars are unresponsive and it also doesn't look like the values are being calculated correctly either. Any feedback/advice would be greatly appreciated, Many thanks

**Follow-Ups**:**Re: Problems plotting 3D surface and using manipulate***From:*Heike Gramberg <heike.gramberg@gmail.com>