Well, strange, I do not have any idea of what the problem could be here. I was trying this successfully on v11.3 and v12.0. Instead of using ListContourPlot
: Does probably ContourPlot
work for you?, e.g.
fel = Interpolation[{{#1, #2}, #3} & @@@ arrayData];
ContourPlot[fel[\[FormalX], \[FormalY]],
Evaluate[Sequence @@
MapThread[Prepend, {First[fel], {\[FormalX], \[FormalY]}}]],
ColorFunction -> ColorData["Rainbow"], ContourStyle -> None,
FrameLabel -> {"PC2", "PC3"}, GridLines -> Automatic,
LabelStyle -> {FontSize -> 20, FontFamily -> "Times", Black, Bold},
PlotRange -> All,
FrameTicks -> {{{0.4, 0.6, 0.8, 1.0, 1.2, 1.4},
None}, {{0.4, 0.6, 0.8, 1.0, 1.2, 1.4}, None}},
PlotLabel -> Style["FEL: Amber/Tip4p-eW", FontSize -> 18],
PlotLegends ->
BarLegend[All, LegendLabel -> "kJ/mol",
LabelStyle -> {Bold, Black, "Times", Bold[0.3], 18}]]
EDIT:
What happens when you use your original code with:
ListContourPlot[(*bla bla*), PlotRange->All]