I have the following data table:
[,1] [,2] [,3] [,4] [,5]
[1,] 2575 1927 1754 581 354
[2,] 1156 810 730 541 237
[3,] 417 297 199 125 110
[4,] 281 132 132 47 58
[5,] 152 84 87 54 19
Each column represents a time interval expressed in nano-seconds
Each row represents an energy interval expressed m=n MeV
Each table value represents the average gamma rays intensity measured during
the time interval identified by the column and
the energy range identified by the row.
The Energy marginal has been fitted through a Gamma curve with parameters
(alpha = 1.85342, beta = 348.18)
The Time marginal has been fitted through a Weibull curve with parameters
(alpha = 0.334489, beta = 9.14066)
The scaling factor = 1403.88.
My goal is:
1. to generate and plot the 2D surface which is generated by the product of the
two curves (like Bezier surfaces)
2. to generate a 3D stairsplot of the above table
3. *ideally* to draw the generated product surface *and* the 3D stairplot in
the same plot
I had a look at graphic functions (persp, plot3D, sctterplot3d) but I feel
intimidated. I have to sample somehow the two curves
to generate the product surface ... maybe using tensors ?
Please, help.
Thank you.
Maura
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