#27672: Trouble saving specificly shaped GeometryCollection to spatialite
backend
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Reporter: Tim Sheerman-Chase | Owner: nobody
Type: Bug | Status: new
Component: GIS | Version: 1.10
Severity: Normal | Resolution:
Keywords: | Triage Stage: Unreviewed
Has patch: 0 | Needs documentation: 0
Needs tests: 0 | Patch needs improvement: 0
Easy pickings: 0 | UI/UX: 0
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Comment (by Tim Sheerman-Chase):
When I get the wkt from the GEOSGeometry object, it has one number with
scientific notation (1e-05):
GEOMETRYCOLLECTION (POLYGON ((0.004585821432403 53.39205655445362,
0.004370524051853 53.39197386424815, 0.003511999412435 53.39224718406162,
0.003334269156126 53.39230564512001, 0.003010761561655 53.39244359770373,
0.002313077441331 53.39273886079805, 0.002153264778766 53.3928494141358,
0.002098473352319 53.39289040220098, 0.001975450131408 53.39301575633081,
0.001571912175901 53.39342627983574, 0.00144845213223 53.39354238985806,
0.001054429533822 53.39382638644516, 0.000660690765872 53.39411654416967,
0.000258658810006 53.3944499832029, -0.000208743564432 53.39485788447784,
-0.000230623648264 53.39490287808773, -0.000236528103555
53.39494760407232, -0.000210152629556 53.39499816331232,
-0.000134789640903 53.39507021540287, 0 53.39512930610134, 1e-05
53.39519086239132, 0.000320701021055 53.39528731045475, 0.000440541032034
53.39534108611749, 0.000495476965256 53.39537522708896, 0.000526128004445
53.39540340096636, 0.000552505095391 53.39545396900132, 0.00056354800768
53.39551912431292, 0.000561917344505 53.39565462410584, 0.001403023462806
53.39573616267051, 0.001776075560191 53.39578728279303, 0.002238095515083
53.39585922310508, 0.002415730663242 53.39589449667334, 0.00262892046244
53.39594829555955, 0.002759136797677 53.39599552084307, 0.003148451411336
53.39571166071373, 0.003852256735541 53.39519780287833, 0.004239121351319
53.39491876291179, 0.0048580524367 53.39447166424996, 0.00570113015205
53.39385822744637, 0.006098176439091 53.39356945364467, 0.006789195134597
53.39306853168554, 0.006903507578287 53.39298848546464, 0.006452162455299
53.39282038704182, 0.006147262062949 53.39269606225199, 0.005531717833986
53.39243518140811, 0.005205915002175 53.39230503820097, 0.004585821432403
53.39205655445362)))
From my understanding of the WKT 2 spec, scientific notation should not be
used (as far as I can tell).
http://docs.opengeospatial.org/is/12-063r5/12-063r5.html Also, AFAIK the
WKT 1 spec leaves this detail unspecified. I can't find where the numbers
are being encoded in the source. Any ideas?
--
Ticket URL: <https://code.djangoproject.com/ticket/27672#comment:6>
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