I want to create ListContourPlotsListContourPlot
s for sets of Data (from a physics simulation) given as Triplets {x, y, f(x, y)}. Certain parameter regions in the x-y-plane are excluded by experiments. The list of triplets simply does not contain any Triplets with excluded x-y-parameters. ListPointPlot3DListPointPlot3D
shows that this is not the problem.
The problem is that ListContourPlotListContourPlot
(which I prefer to use, since I have to correlate exclusions from different quantities) interpolates values into regions where no data points are given, as soon as the shape of the data-filled region becomes concave.
I figure it has something to do with the "Method" option of ListContourPlotListContourPlot
, but those things are reeeealyreally badly documented.
The spoiler containsHere is a list of 140 data triplettstriplets that show the problem.
! {{14., 2.1, 125.433}, {14., 2.1375, 125.957}, {14., 2.175, 126.58}, {14., 2.2125, 127.354}, {14., 2.25, 128.415}, {14.5, 2.1125, 125.698}, {14.5, 2.15, 126.315}, {14.5, 2.1875, 127.087}, {14.5, 2.225, 128.152}, {15., 2.1, 125.593}, {15., 2.1375, 126.238}, {15., 2.175, 127.061}, {15., 2.2125, 128.256}, {15.5, 2.1125, 125.886}, {15.5, 2.15, 126.669}, {15.5, 2.1875, 127.783}, {16., 2.1, 125.73}, {16., 2.1375, 126.534}, {16., 2.175, 127.708}, {16.5, 2.1125, 126.054}, {16.5, 2.15, 127.082}, {17., 2.1, 125.829}, {17., 2.1375, 126.85}, {17.5, 2.1, 125.858}, {17.5, 2.1375, 127.016}, {18., 2.1, 125.868}, {18., 2.1375, 127.185}, {18.5, 2.1125, 126.243}, {18.5, 2.15, 128.277}, {19., 2.125, 126.76}, {19.5, 2.1125, 126.183}, {20., 2.1, 125.633}, {20., 2.1375, 127.686}, {20.5, 2.125, 126.573}, {21., 2.1125, 125.763}, {21.5, 2.1, 125.093}, {21.5, 2.1375, 127.062}, {22., 2.125, 125.806}, {22.5, 2.1125, 124.979}, {22.5, 2.15, 127.707}, {23., 2.125, 125.111}, {23.5, 2.1, 124.03}, {23.5, 2.1375, 125.248}, {24., 2.1, 123.738}, {24., 2.1375, 124.82}, {24.5, 2.1, 123.445}, {24.5, 2.1375, 124.411}, {24.5, 2.175, 126.896}, {25., 2.125, 123.689}, {25., 2.1625, 124.924}, {25.5, 2.1125, 123.092}, {25.5, 2.15, 123.987}, {25.5, 2.1875, 125.801}, {26., 2.125, 123.022}, {26., 2.1625, 123.937}, {26., 2.2, 125.892}, {26.5, 2.125, 122.703}, {26.5, 2.1625, 123.512}, {26.5, 2.2, 124.901}, {27., 2.1125, 122.198}, {27., 2.15, 122.848}, {27., 2.1875, 123.782}, {27., 2.225, 125.874}, {27.5, 2.125, 122.095}, {27.5, 2.1625, 122.745}, {27.5, 2.2, 123.676}, {27.5, 2.2375, 125.734}, {28., 2.125, 121.808}, {28., 2.1625, 122.394}, {28., 2.2, 123.198}, {28., 2.2375, 124.563}, {28.5, 2.1125, 121.39}, {28.5, 2.15, 121.87}, {28.5, 2.1875, 122.506}, {28.5, 2.225, 123.412}, {28.5, 2.2625, 125.253}, {29., 2.125, 121.29}, {29., 2.1625, 121.747}, {29., 2.2, 122.372}, {29., 2.2375, 123.256}, {29., 2.275, 124.961}, {29.5, 2.125, 121.036}, {29.5, 2.1625, 121.454}, {29.5, 2.2, 122.006}, {29.5, 2.2375, 122.762}, {29.5, 2.275, 123.966}, {30., 2.1, 120.465}, {30., 2.1375, 120.896}, {30., 2.175, 121.334}, {30., 2.2125, 121.862}, {30., 2.25, 122.595}, {30., 2.2875, 123.735}, {30.5, 2.1, 120.187}, {30.5, 2.1375, 120.599}, {30.5, 2.175, 121.065}, {30.5, 2.2125, 121.525}, {30.5, 2.25, 122.157}, {30.5, 2.2875, 123.07}, {30.5, 2.325, 124.9}, {31., 2.125, 120.167}, {31., 2.1625, 120.593}, {31., 2.2, 121.078}, {31., 2.2375, 121.561}, {31., 2.275, 122.237}, {31., 2.3125, 123.247}, {31., 2.35, 126.014}, {31.5, 2.125, 119.881}, {31.5, 2.1625, 120.285}, {31.5, 2.2, 120.747}, {31.5, 2.2375, 121.268}, {31.5, 2.275, 121.808}, {31.5, 2.3125, 122.628}, {31.5, 2.35, 124.034}, {32., 2.1125, 119.484}, {32., 2.15, 119.849}, {32., 2.1875, 120.264}, {32., 2.225, 120.742}, {32., 2.2625, 121.268}, {32., 2.3, 121.85}, {32., 2.3375, 122.72}, {32.5, 2.1125, 119.213}, {32.5, 2.15, 119.558}, {32.5, 2.1875, 119.949}, {32.5, 2.225, 120.396}, {32.5, 2.2625, 120.911}, {32.5, 2.3, 121.431}, {33., 2.1, 118.846}, {33., 2.1375, 119.16}, {33., 2.175, 119.512}, {33., 2.2125, 119.91}, {33., 2.25, 120.365}, {33., 2.2875, 120.871}, {33.5, 2.125, 118.783}, {33.5, 2.1625, 119.101}, {33.5, 2.2, 119.458}, {33.5, 2.2375, 119.856}, {34., 2.1, 118.333}, {34., 2.1375, 118.614}, {34., 2.175, 118.923}, {34., 2.2125, 119.261}}
l= {{14., 2.1, 125.433}, {14., 2.1375, 125.957}, {14., 2.175,
126.58}, {14., 2.2125, 127.354}, {14., 2.25, 128.415}, {14.5,
2.1125, 125.698}, {14.5, 2.15, 126.315}, {14.5, 2.1875,
127.087}, {14.5, 2.225, 128.152}, {15., 2.1, 125.593}, {15., 2.1375,
126.238}, {15., 2.175, 127.061}, {15., 2.2125, 128.256}, {15.5,
2.1125, 125.886}, {15.5, 2.15, 126.669}, {15.5, 2.1875,
127.783}, {16., 2.1, 125.73}, {16., 2.1375, 126.534}, {16., 2.175,
127.708}, {16.5, 2.1125, 126.054}, {16.5, 2.15, 127.082}, {17., 2.1,
125.829}, {17., 2.1375, 126.85}, {17.5, 2.1, 125.858}, {17.5,
2.1375, 127.016}, {18., 2.1, 125.868}, {18., 2.1375,
127.185}, {18.5, 2.1125, 126.243}, {18.5, 2.15, 128.277}, {19.,
2.125, 126.76}, {19.5, 2.1125, 126.183}, {20., 2.1, 125.633}, {20.,
2.1375, 127.686}, {20.5, 2.125, 126.573}, {21., 2.1125,
125.763}, {21.5, 2.1, 125.093}, {21.5, 2.1375, 127.062}, {22.,
2.125, 125.806}, {22.5, 2.1125, 124.979}, {22.5, 2.15,
127.707}, {23., 2.125, 125.111}, {23.5, 2.1, 124.03}, {23.5, 2.1375,
125.248}, {24., 2.1, 123.738}, {24., 2.1375, 124.82}, {24.5, 2.1,
123.445}, {24.5, 2.1375, 124.411}, {24.5, 2.175, 126.896}, {25.,
2.125, 123.689}, {25., 2.1625, 124.924}, {25.5, 2.1125,
123.092}, {25.5, 2.15, 123.987}, {25.5, 2.1875, 125.801}, {26.,
2.125, 123.022}, {26., 2.1625, 123.937}, {26., 2.2, 125.892}, {26.5,
2.125, 122.703}, {26.5, 2.1625, 123.512}, {26.5, 2.2,
124.901}, {27., 2.1125, 122.198}, {27., 2.15, 122.848}, {27.,
2.1875, 123.782}, {27., 2.225, 125.874}, {27.5, 2.125,
122.095}, {27.5, 2.1625, 122.745}, {27.5, 2.2, 123.676}, {27.5,
2.2375, 125.734}, {28., 2.125, 121.808}, {28., 2.1625,
122.394}, {28., 2.2, 123.198}, {28., 2.2375, 124.563}, {28.5,
2.1125, 121.39}, {28.5, 2.15, 121.87}, {28.5, 2.1875,
122.506}, {28.5, 2.225, 123.412}, {28.5, 2.2625, 125.253}, {29.,
2.125, 121.29}, {29., 2.1625, 121.747}, {29., 2.2, 122.372}, {29.,
2.2375, 123.256}, {29., 2.275, 124.961}, {29.5, 2.125,
121.036}, {29.5, 2.1625, 121.454}, {29.5, 2.2, 122.006}, {29.5,
2.2375, 122.762}, {29.5, 2.275, 123.966}, {30., 2.1, 120.465}, {30.,
2.1375, 120.896}, {30., 2.175, 121.334}, {30., 2.2125,
121.862}, {30., 2.25, 122.595}, {30., 2.2875, 123.735}, {30.5, 2.1,
120.187}, {30.5, 2.1375, 120.599}, {30.5, 2.175, 121.065}, {30.5,
2.2125, 121.525}, {30.5, 2.25, 122.157}, {30.5, 2.2875,
123.07}, {30.5, 2.325, 124.9}, {31., 2.125, 120.167}, {31., 2.1625,
120.593}, {31., 2.2, 121.078}, {31., 2.2375, 121.561}, {31., 2.275,
122.237}, {31., 2.3125, 123.247}, {31., 2.35, 126.014}, {31.5,
2.125, 119.881}, {31.5, 2.1625, 120.285}, {31.5, 2.2,
120.747}, {31.5, 2.2375, 121.268}, {31.5, 2.275, 121.808}, {31.5,
2.3125, 122.628}, {31.5, 2.35, 124.034}, {32., 2.1125,
119.484}, {32., 2.15, 119.849}, {32., 2.1875, 120.264}, {32., 2.225,
120.742}, {32., 2.2625, 121.268}, {32., 2.3, 121.85}, {32., 2.3375,
122.72}, {32.5, 2.1125, 119.213}, {32.5, 2.15, 119.558}, {32.5,
2.1875, 119.949}, {32.5, 2.225, 120.396}, {32.5, 2.2625,
120.911}, {32.5, 2.3, 121.431}, {33., 2.1, 118.846}, {33., 2.1375,
119.16}, {33., 2.175, 119.512}, {33., 2.2125, 119.91}, {33., 2.25,
120.365}, {33., 2.2875, 120.871}, {33.5, 2.125, 118.783}, {33.5,
2.1625, 119.101}, {33.5, 2.2, 119.458}, {33.5, 2.2375,
119.856}, {34., 2.1, 118.333}, {34., 2.1375, 118.614}, {34., 2.175,
118.923}, {34., 2.2125, 119.261}};
ListPlot@l[[All, 1 ;; 2]]