Example 52 (simple heat map)

-1.358218406,-1.680180041 1.019182305,0.372856303 -0.046088243,-1.437769350 -1.652131815,1.508971050 0.880858861,-1.351061092 -0.421879985,0.460046324 -1.775861788,-0.377353402 -0.432299413,-0.544505160 0.597065895,1.063556238 1.018733929,0.516806935 0.693442592,0.818444791 -0.151663918,0.365657710 -0.484266425,1.106456147 -0.563660625,-0.340853294 1.027548529,1.374454347 0.018512709,0.497770566 -0.898245409,-0.273169274 0.401530957,-0.674111550 -1.614098348,-0.004893727 0.475737412,-0.167170150 2.896699296,-1.644885154 0.369390551,-0.363407053 0.195674450,0.796902390 -0.455183324,0.579003105 -0.840773769,-1.275440408 0.201168111,-0.145193347 -0.977505714,-1.097588725 -0.157543842,0.931822793 1.213436851,1.298792286 -0.095741952,2.106816580 -0.111263004,-2.078441409 -1.052447580,0.491906540 -0.223993725,0.596251685 -0.052027197,0.232441049 1.649155223,1.106705488 0.034758550,0.089969971 0.630451636,-2.019073856 0.317187144,0.159083991 0.907639885,0.389694700 3.507502055,0.745939039 0.241160732,0.863903018 -1.626223538,1.011512303 0.989728940,1.009256748 0.617118223,-0.954345976 1.281573323,-0.980004467 0.495453751,-0.368463663 0.123889926,-1.535610105 0.335354589,0.014701983 -0.338484233,-0.666617714 1.027240081,-0.576596127 0.171040222,0.260085664 0.111490346,-0.164757454 -0.596089124,1.235859094 0.375068347,1.108377818 0.875997125,0.491710332 0.226746929,0.666406706 -2.352907879,-0.200828814 -0.300730546,-0.467913893 0.206455528,0.983026064 -0.740838462,-1.625012236 -0.282646786,0.966176452 -1.444361250,-0.192205832 1.215377424,-0.655657397 -0.717685934,-1.684864615 -0.592155462,-0.063825352 2.519884926,-1.399751647 -0.235264465,-1.448776053 0.168046668,-0.677469532 -0.858446520,0.075247524 -0.426844135,0.138844531 -1.010234356,0.591016780 0.679895798,0.764228183 -0.387500047,-1.692940404 2.520777242,1.920958205 -0.488662927,0.472892173 0.009272712,-0.936161622 -0.053498613,0.573661462 -0.457075249,0.502713786 -0.574686946,-0.257165813 0.285084048,0.307028734 -0.445707159,0.529429678 1.748563380,-1.349685484 0.428504645,0.141547824 -0.710781981,1.296516455 -0.907194831,-1.654794968 -0.654270763,-1.238840341 -0.174782471,0.165698550 2.120830108,0.656595369 0.256434229,-0.068412006 0.097702199,0.657398908 -1.643564412,-1.029640776 1.287269469,0.253276516 -0.779834081,-0.752704032 -0.400443388,-0.144411218 0.864388402,-1.466337337 -0.326945256,-2.497433918 0.312223956,0.377362888 0.948793386,0.738802681 0.456457305,0.478290244 0.466944067,-0.500205475