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Problem

I have an array defined as arr1 = {{0, 0, 0}, {0.6, 0, 0}, {0, 0.4, 0}, {0.6, 0.4, 0}, {1, 0.4, 0}, {0, 1, 0}, {0.6, 1, 0}, {1, 1, 0}}.

I'd like plot somethig like this:

enter image description here

However, with plt1 = ListPlot3D[arr1, PlotStyle -> {Opacity[0.5]}, Mesh -> None, AxesLabel -> {x, y, z}],I just got this:

enter image description here

My Question

I want to know how I can get a plot with a square corner ?

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    $\begingroup$ RegionFunction should be useful for cutting off unwanted sections. $\endgroup$ Oct 17, 2015 at 16:06

1 Answer 1

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@ J.M. I work out my problem with:

plt1 = ListPlot3D[arr1, RegionFunction -> Function[{x, y}, ¬ (x >= 0.6 ∧ y <= 0.4)], PlotStyle -> {Opacity[0.5]}, Mesh -> None, AxesLabel -> {x, y, z}]

Thanks.

the plot

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