(*source*)
sourceStruct =
{{a, {{c1, d}, {e, f}}}, {b, {{c2, h}, {i, k}}}, {m, {{c3, n}, {v,x}}}}
(*target*)
targetStruct = {{a, {{d}, {e, f}}}, {b, {{h}, {i,k}}}, {m, {{n}, {v, x}}}}
(*try 1*)
Apply[Function[x, Delete[x, 1]], Level[sourceStruct, {2}], {1}]
(*result 1*)
{a, {d}, b, {h}, m, {n}}
(*try 2*)
Map[Function[x, Delete[x, 1]], sourceStruct, {3}]
(*result 2*)
{{a, {{d}, {f}}}, {b, {{h}, {k}}}, {m, {{n}, {x}}}}
I have a list of 4D data (x position, y position, amplitude, wavelength). I want to plot x, y, and amplitude on a 3D plot and have the color of the points correspond to the wavelength. I have seen many examples using functions to define color but my wavelength cannot be expressed by an analytic function. Is there a simple way to do this? Answer Here a another possible way to visualize 4D data: data = Flatten[Table[{x, y, x^2 + y^2, Sin[x - y]}, {x, -Pi, Pi,Pi/10}, {y,-Pi,Pi, Pi/10}], 1]; You can use the function Point along with VertexColors . Now the points are places using the first three elements and the color is determined by the fourth. In this case I used Hue, but you can use whatever you prefer. Graphics3D[ Point[data[[All, 1 ;; 3]], VertexColors -> Hue /@ data[[All, 4]]], Axes -> True, BoxRatios -> {1, 1, 1/GoldenRatio}]
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