Re: create a list with x,y,z coordinates

*To*: mathgroup at smc.vnet.net*Subject*: [mg81584] Re: create a list with x,y,z coordinates*From*: dh <dh at metrohm.ch>*Date*: Fri, 28 Sep 2007 02:14:25 -0400 (EDT)*References*: <fdf2ol$2i7$1@smc.vnet.net>

Hi Claus, assume we have a matrix with xy values: XY and a vector with z values: Z. First we Flatten XY to a list of xy pairs. Then we append to every pair the corresponding z value. Finally we restructure the matrix: Partition[ MapThread[Append,{Flatten[XY,1],Z}] ,3] hope this helps, Daniel Claus wrote: > Hi, > I have a list of z-values: > > zVals={13, 8, 15, 9, 15, 8, 11, 2, 18, 8, 5, 10, 11, 10, 9, 14, 6, 23, > 6, 14, 16, 5, 10, 5, 18, 10, 11, 10, 15, 8, 6, 23, 6, 17, 6, 12, 9, 17, > 4, 8, 18, 4, 18, 9, 13, 9, 14, 6, 10, 6, 5, 13, 5, 10, 6, 19, 8, 17, 9, > 16, 15, 5, 13, 5, 11, 9, 16, 2, 21, 11, 4, 15, 7, 10, 7, 16, 10, 14, 7, > 18, 17, 8, 15, 11, 14, 5, 14, 4, 13, 6, 8, 16, 8, 22, 8, 6, 9, 13, 5, 12} > > These z-values are at grid points in a regularly spaced mesh, indices i > and j correspond to coordinates x and y, respectively. I can create the > mesh by > > Table[{i,j},{i,0.05,1,0.1},{j,0.05,1,0.1}] > > What is the best way in mathematica to "append" the z-values to the > (x,y)values? > I know that they are in order corresponding to the (x,y)values; that is > 13 corresponds to (0.05,0.05) and 12 corresponds to (0.95,0.95). > > Thanks for your help, > Claus >