Hi, I'm getting this strange behavior:
>>> type(my_multi)==MultiPolygon True >>> type(a_poly)==Polygon True >>> u = my_multi.union(a_poly) >>> type(u) GeometryCollection Is this at all possible? The GeometryCollection has a LineString! The Multipolygon is huge. Starts with MULTIPOLYGON (((31.75 98.55250000000001, 32.766 98.55250000000001, 191.516 98.55250000000001, 191.5160490085702 98.55249759236334, 191.516097545161 98.55249039264021, 191.5161451423386 98.55247847016787, 191.5161913417162 98.55246193976626, 191.5162356983684 98.55244096063218, 191.5162777851165 98.55241573480616, 191.5163171966421 98.55238650522669, 191.5163535533906 98.5523535533906, 191.5163865052267 98.55231719664209, 191.5164157348062 98.55227778511652, 191.5164409606322 98.55223569836842, 191.5164619397663 98.5521913417162, 191.5164784701679 98.55214514233863, 191.5164903926402 98.55209754516102, The Polygon is POLYGON ((206.0975 -0.8160000000000005, 206.0971942301437 -0.8222240884109276, 206.0962798653056 -0.8283882354480248, 206.094765711319 -0.8344330770056589, 206.0926663503145 -0.8403003979551837, 206.0900020002861 -0.8459336927884514, 206.0867983203812 -0.8512787097967453, 206.0830861637885 -0.856283973544392, 206.0789012806054 -0.8609012806053463, 206.0742839735444 -0.8650861637885343, 206.0692787097968 -0.8687983203812122, 206.0639336927885 -0.8720020002861211, 206.0583003979552 -0.8746663503144673, 206.0524330770057 -0.8767657113189957, 206.046388235448 -0.8782798653056056, 206.0402240884109 -0.879194230143685, 206.034 -0.8795000000000005, 206.0277759115891 -0.879194230143685, 206.021611764552 -0.8782798653056056, 206.0155669229943 -0.8767657113189957, 206.0096996020448 -0.8746663503144673, 206.0040663072115 -0.8720020002861211, 205.9987212902032 -0.8687983203812122, 205.9937160264556 -0.8650861637885343, 205.9890987193946 -0.8609012806053463, 205.9849138362115 -0.8562839735443921, 205.9812016796188 -0.8512787097967454, 205.9779979997139 -0.8459336927884515, 205.9753336496855 -0.8403003979551839, 205.973234288681 -0.8344330770056591, 205.9717201346944 -0.8283882354480249, 205.9708057698563 -0.8222240884109279, 205.9705 -0.8160000000000008, 205.9708057698563 -0.8097759115890729, 205.9717201346944 -0.8036117645519758, 205.973234288681 -0.7975669229943416, 205.9753336496855 -0.7916996020448168, 205.9779979997139 -0.7860663072115491, 205.9812016796188 -0.7807212902032552, 205.9849138362115 -0.7757160264556086, 205.9890987193946 -0.7710987193946542, 205.9937160264556 -0.7669138362114663, 205.9987212902032 -0.7632016796187884, 206.0040663072115 -0.7599979997138795, 206.0096996020448 -0.7573336496855333, 206.0155669229943 -0.7552342886810048, 206.021611764552 -0.7537201346943949, 206.0277759115891 -0.7528057698563155, 206.034 -0.7525000000000001, 206.0402240884109 -0.7528057698563155, 206.046388235448 -0.7537201346943949, 206.0524330770057 -0.7552342886810048, 206.0583003979552 -0.7573336496855333, 206.0639336927885 -0.7599979997138795, 206.0692787097968 -0.7632016796187884, 206.0742839735444 -0.7669138362114663, 206.0789012806054 -0.7710987193946542, 206.0830861637885 -0.7757160264556084, 206.0867983203812 -0.7807212902032552, 206.0900020002861 -0.786066307211549, 206.0926663503145 -0.7916996020448167, 206.094765711319 -0.7975669229943415, 206.0962798653056 -0.8036117645519757, 206.0971942301437 -0.8097759115890727, 206.0975 -0.8159999999999997, 206.0975 -0.8160000000000005)) Thanks, JP
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