{"action":"created","issue":{"url":"https://api.github.com/repos/mapbox/rasterio/issues/753","repository_url":"https://api.github.com/repos/mapbox/rasterio","labels_url":"https://api.github.com/repos/mapbox/rasterio/issues/753/labels{/name}","comments_url":"https://api.github.com/repos/mapbox/rasterio/issues/753/comments","events_url":"https://api.github.com/repos/mapbox/rasterio/issues/753/events","html_url":"https://github.com/mapbox/rasterio/pull/753","id":158230952,"number":753,"title":"Dealing with non-invertable projection errors [WIP - no mergy]","user":{"login":"perrygeo","id":1151287,"avatar_url":"https://avatars.githubusercontent.com/u/1151287?v=3","gravatar_id":"","url":"https://api.github.com/users/perrygeo","html_url":"https://github.com/perrygeo","followers_url":"https://api.github.com/users/perrygeo/followers","following_url":"https://api.github.com/users/perrygeo/following{/other_user}","gists_url":"https://api.github.com/users/perrygeo/gists{/gist_id}","starred_url":"https://api.github.com/users/perrygeo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/perrygeo/subscriptions","organizations_url":"https://api.github.com/users/perrygeo/orgs","repos_url":"https://api.github.com/users/perrygeo/repos","events_url":"https://api.github.com/users/perrygeo/events{/privacy}","received_events_url":"https://api.github.com/users/perrygeo/received_events","type":"User","site_admin":false},"labels":[],"state":"open","locked":false,"assignee":null,"milestone":null,"comments":3,"created_at":"2016-06-02T20:22:26Z","updated_at":"2016-06-03T15:28:33Z","closed_at":null,"pull_request":{"url":"https://api.github.com/repos/mapbox/rasterio/pulls/753","html_url":"https://github.com/mapbox/rasterio/pull/753","diff_url":"https://github.com/mapbox/rasterio/pull/753.diff","patch_url":"https://github.com/mapbox/rasterio/pull/753.patch"},"body":"Attempt at #614\r\n\r\nSo far it's an xfailing test for several (not all) of the resampling methods.\r\n\r\nI've also `pass`ed on CPLE errors in warping - this was the behavior as of #657 (see #611 too) but was changed back [here](https://github.com/mapbox/rasterio/commit/12f8fc7e3f73766ee80b8f64813601e56caae618#diff-7519f03c7f3cca2b36a087ca08b1ffd1R570) for reasons that I've since forgotten. Can you refresh my memory on this @sgillies?"},"comment":{"url":"https://api.github.com/repos/mapbox/rasterio/issues/comments/223610877","html_url":"https://github.com/mapbox/rasterio/pull/753#issuecomment-223610877","issue_url":"https://api.github.com/repos/mapbox/rasterio/issues/753","id":223610877,"user":{"login":"perrygeo","id":1151287,"avatar_url":"https://avatars.githubusercontent.com/u/1151287?v=3","gravatar_id":"","url":"https://api.github.com/users/perrygeo","html_url":"https://github.com/perrygeo","followers_url":"https://api.github.com/users/perrygeo/followers","following_url":"https://api.github.com/users/perrygeo/following{/other_user}","gists_url":"https://api.github.com/users/perrygeo/gists{/gist_id}","starred_url":"https://api.github.com/users/perrygeo/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/perrygeo/subscriptions","organizations_url":"https://api.github.com/users/perrygeo/orgs","repos_url":"https://api.github.com/users/perrygeo/repos","events_url":"https://api.github.com/users/perrygeo/events{/privacy}","received_events_url":"https://api.github.com/users/perrygeo/received_events","type":"User","site_admin":false},"created_at":"2016-06-03T15:28:33Z","updated_at":"2016-06-03T15:28:33Z","body":"Prelim look at `gdalwarpkernel.cpp` shows that all of the xfailing resampling methods (with the exception of gauss) [use their own Filter Functions](https://github.com/OSGeo/gdal/blob/trunk/gdal/alg/gdalwarpkernel.cpp#L50-L109). Makes sense since the algorithms require a certain radius of neighboring data. But these appear to be failing silently or producing invalid results when `CHECK_WITH_INVERT_PROJ` is false.\r\n\r\nThe filter functions themselves are [here](https://github.com/OSGeo/gdal/blob/trunk/gdal/alg/gdalwarpkernel.cpp#L2369) for future reference.\r\n\r\nNot sure what's up with gauss yet."}}
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