# Plot 3D density

I have data that is in four columns. The x y and z are just the coordinates and the fourth is my data. This is not a function. This is electron density in a copper cell and I'm trying to display it in a way that makes sense. Any help would be appreciated. I was semi-successful in gnuplot but it was hard to see and I could only specify certain boundaries. using ($1:$2:($4>0 &&$4<2 ? \$3/0) This might be slightly wrong, but you get the picture. I was saying to only plot z if the data was between certain bounds. There must be a better way and I need your help. Thanks. Here is the structure.

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Have you tried ListContourPlot3D? By the way, your title is misleading: this is a 3D density, that is, a density over a three-dimensional region. – Rahul Mar 19 '14 at 4:40
– Michael E2 Mar 19 '14 at 4:40

dens = Table[{x, y, z, E^-Norm[{x, y, z}]^2}, {x, -1, 1, .1}, {y, -1,  1, .1}, {z, 0, 1, .1}];