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{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"Incorrect north west latitude of RpfCoverageBox","articleBody":"I am converting CADRG to TMS and in the method makeTiles of MapTileMaker, I am getting back an incorrect north west latitude for the RpfCoverageBox but am not sure why.\r\n\r\npublic Rectangle2D makeTiles(RpfLayer rpfLayer) {\r\n       final Proj proj = new Mercator(new LatLonPoint.Double(), 50000, TILE_SIZE, TILE_SIZE);\r\n\r\n       Vector\u003cRpfCoverageBox\u003e coverage = rpfLayer.getFrameProvider().getCoverage(90f, -180f, -90f, 180f, proj);\r\n       \r\n       for (RpfCoverageBox box : coverage) {\r\n             // nw_lat value is coming out as 64.0046 when it should be 65.25\r\n             nw_lat = box.nw_lat; (64.0046)\r\n             \r\n             // the following values are coming out correct I believe\r\n             nw_lon = box.nw_lon; (-151.266)\r\n             se_lat = box.se_lat; (59.861)\r\n             se_lon = box.se_lon; (-143.77) \r\n       }\r\n}\r\n\r\n\r\n\r\nI have attached the CADRG specs from the A.TOC files at each level (50, 100, 250).\r\n![alaska_large_250_atoc](https://user-images.githubusercontent.com/42076838/49475003-1b742200-f7e4-11e8-9cb4-2332648718e2.PNG)\r\n![alaska_large_100_atoc](https://user-images.githubusercontent.com/42076838/49475008-22029980-f7e4-11e8-8f14-edefa95582bf.PNG)\r\n![alaska_large_50_atoc](https://user-images.githubusercontent.com/42076838/49475015-25962080-f7e4-11e8-94b3-8ff673d137cb.PNG)\r\nAt this time I am not able to upload the full CADRG folders and files but might be able to do so in pieces if its needed.\r\n\r\n","author":{"url":"https://github.com/mg629","@type":"Person","name":"mg629"},"datePublished":"2018-12-05T12:59:36.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":10},"url":"https://github.com/47/openmap/issues/47"}