3D Plotting from X Y Z Data Excel or other Tools

Question

I have data that looks like this   1000    13  75 2 1000    21  79 21 1000    29  80 02 5000    29  87 9 5000    37  88 54 5000    45  88 56 10000   29  90 11 10000   37  90 79 10000   45  90 87   I want to use the first column as x axis labels  the second column as y axis labels and the third column as the z values   I want to display a surface in that manner   What is the best way to do this   I tried Excel but didn t really get anywhere   Does anyone have any suggestions for a tool to do this   Does anyone know how to do this in Excel   Thanks

User · Answer

You can use r libraries for 3 D plotting.

Steps are:

First create a data frame using data.frame() command.

Create a 3D plot by using scatterplot3D library.

Or You can also rotate your chart using rgl library by plot3d() command.

Alternately you can use plot3d() command from rcmdr library.

In MATLAB, you can use surf(), mesh() or surfl() command as per your requirement.

[http://in.mathworks.com/help/matlab/examples/creating-3-d-plots.html]

User · Answer

You really can t display 3 columns of data as a  surface    Only having one column of  Z  data will give you a line in 3 dimensional space  not a surface   Or in the case of your data  3 separate lines    For Excel to be able to work with this data  it needs to be formatted as shown below         13    21   29      37    45    1000  75 2                               1000       79 21                             1000             80 02                       5000             87 9                    5000                    88 54                5000                           88 56             10000            90 11       10000                   90 79    10000                          90 87   Then  to get an actual surface  you would need to fill in all the missing cells with the appropriate Z-values   If you don t have those  then you are better off showing this as 3 separate 2D lines  because there isn t enough data for a surface   The best 3D representation that Excel will give you of the above data is pretty confusing     Representing this limited dataset as 2D data might be a better choice     As a note for future reference  these types of questions usually do a little better on superuser com

User · Answer

Why not merge the rows that contain the same values   -            13    21    29     37    45       1000    -75 2     -- 79 21   --   80 02           5000     ---------------------87 9---88 54----88 56 10000   -------------------90 11--90 97----90 87   Excel can use that pretty well

User · Answer

You also can use Gnuplot which is also available from gretl  Put your x y z data on a text file an insert the following  splot  test txt  using 1 2 3 with points palette pointsize 3 pointtype 7   Then you can set labels  etc   using   set xlabel  xxx  rotate parallel set ylabel  yyy  rotate parallel set zlabel  zzz  rotate parallel set grid show grid unset key

User · Answer

I ended up using matplotlib     from mpl toolkits mplot3d import Axes3D from matplotlib import cm import matplotlib pyplot as plt import numpy as np x    1000 1000 1000 1000 1000 5000 5000 5000 5000 5000 10000 10000 10000 10000 10000  y    13 21 29 37 45 13 21 29 37 45 13 21 29 37 45  z    75 2 79 21 80 02 81 2 81 62 84 79 87 38 87 9 88 54 88 56 88 34 89 66 90 11 90 79 90 87  fig   plt figure   ax   fig gca projection  3d   ax plot trisurf x  y  z  cmap cm jet  linewidth 0 2  plt show

[excel] 3D Plotting from X, Y, Z Data, Excel or other Tools

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