Hi Jón, I work regularly in EPSG:3413, but the same issue applies. "d.grid -g 1:0" doesn't make a grid to the pole. Does it for you? I'd like to submit a bug report as per the suggestion from Markus, but am not sure what the bug is if this command works for you when the pole is included in the view.
-k. On 2020-12-31 at 09:23 -08, Jón Eiríksson <j...@hi.is> wrote... > This has worked for me: > > (Thu Dec 31 17:22:11 2020) > g.proj -p > -PROJ_INFO------------------------------------------------- > name : Stereographic > proj : stere > datum : wgs84 > ellps : wgs84 > lat_0 : 90 > lat_ts : 70 > lon_0 : -45 > k : 1 > x_0 : 0 > y_0 : 0 > no_defs : defined > towgs84 : 0.000,0.000,0.000 > -PROJ_EPSG------------------------------------------------- > epsg : 3413 > -PROJ_UNITS------------------------------------------------ > unit : meter > units : meters > meters : 1 > (Thu Dec 31 17:22:11 2020) Command finished (0 sec) > > Jon > > > > > On 31 Dec 2020, at 16:26, Markus Neteler wrote: > >> Hi Ken, >> >> On Thu, Dec 31, 2020 at 3:06 AM Ken Mankoff <mank...@gmail.com> wrote: >>> >>> Dear GRASS List, >>> >>> Can someone suggest what setup to use (EPSG code? proj4 code?) to >>> have the projection centered on the N. pole? I'm looking to create >>> a graphic similar to this image in the Raster Gallery: >>> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgrass.osgeo.org%2F%2Fimages%2Fgallery%2Fraster%2Fday_on_earth_N.png&data=04%7C01%7Cjeir%40hi.is%7Cc4ce599d0faf40d3408608d8ada8dff2%7C09fa5f0e211846568529677ed8fdbe78%7C0%7C0%7C637450288118244590%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=1b0EG%2B%2ByT0LjNGOp55l%2FwYiVKSNfAeUvd%2BZS12dCWZg%3D&reserved=0 >>> >>> If I set up a polar projection based on >>> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fspatialreference.org%2Fref%2Fsr-org%2F8243%2F&data=04%7C01%7Cjeir%40hi.is%7Cc4ce599d0faf40d3408608d8ada8dff2%7C09fa5f0e211846568529677ed8fdbe78%7C0%7C0%7C637450288118244590%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=I7u9KAIJ0geqmtTPZv1vUg3kiAtqtASajvhxzCwFmy4%3D&reserved=0 >>> >>> using: >>> >>> grass -c ./G >>> g.proj -c proj4="+proj=stere +lat_0=90 +lat_ts=45 +lon_0=-170 +k=1 >>> +x_0=0 +y_0=0 +ellps=WGS84 +datum=WGS84 +units=m +no_defs" >>> >>> Things mostly work, but >>> >>> d.grid -g 1:0 color=red >>> >>> does not show latitude lines on most of the graphic (see attached). >> >> I managed to generate it with >> >> Preparation of a 10 degree grid: >> >> # EPSG:4326 >> GRASS :~ > g.region -dp >> projection: 3 (Latitude-Longitude) >> zone: 0 >> datum: wgs84 >> ellipsoid: wgs84 >> north: 90N >> south: 90S >> west: 180W >> east: 180E >> nsres: 1 >> ewres: 1 >> rows: 180 >> cols: 360 >> cells: 64800 >> GRASS :~ > v.mkgrid grid=36,18 map=grid_10deg >> # download "Natural Earth I with Shaded Relief, Water, and Drainages" >> from >> https://eur02.safelinks.protection.outlook.com/?url=http%3A%2F%2Fwww.naturalearthdata.com%2Fdownloads%2F10m-raster-data%2F10m-natural-earth-1%2F&data=04%7C01%7Cjeir%40hi.is%7Cc4ce599d0faf40d3408608d8ada8dff2%7C09fa5f0e211846568529677ed8fdbe78%7C0%7C0%7C637450288118244590%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=at%2BPzc3vGV%2FmxVhg%2BxltDODIC52rrl%2Bd39ZTtta7uDA%3D&reserved=0 >> GRASS :~ > r.import in=NE1_HR_LC_SR_W_DR.tif >> output=natural_earth_global_landcover >> GRASS :~ > g.region raster=natural_earth_global_landcover.1 >> GRASS :~ > r.composite r=natural_earth_global_landcover.1 >> g=natural_earth_global_landcover.2 b=natural_earth_global_landcover.3 >> out=natural_earth_global_landcover.rgb >> GRASS :~ > exit >> >> # WGS 84 / Arctic Polar Stereographic >> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fepsg.io%2F3995&data=04%7C01%7Cjeir%40hi.is%7Cc4ce599d0faf40d3408608d8ada8dff2%7C09fa5f0e211846568529677ed8fdbe78%7C0%7C0%7C637450288118244590%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=JwnkjczUnnrbi%2F%2BnQGepiYo4eB02S5%2BQUWSMK3rRFDs%3D&reserved=0 >> grass78 -c epsg:3995 ~/grassdata/arctic_polar_stereographic >> GRASS :~ > g.proj -w >> PROJCS["WGS 84 / Arctic Polar Stereographic", >> GEOGCS["WGS 84", >> DATUM["WGS_1984", >> SPHEROID["WGS 84",6378137,298.257223563, >> AUTHORITY["EPSG","7030"]], >> AUTHORITY["EPSG","6326"]], >> PRIMEM["Greenwich",0, >> AUTHORITY["EPSG","8901"]], >> UNIT["degree",0.0174532925199433, >> AUTHORITY["EPSG","9122"]], >> AUTHORITY["EPSG","4326"]], >> PROJECTION["Polar_Stereographic"], >> PARAMETER["latitude_of_origin",71], >> PARAMETER["central_meridian",0], >> PARAMETER["false_easting",0], >> PARAMETER["false_northing",0], >> UNIT["metre",1, >> AUTHORITY["EPSG","9001"]], >> AXIS["Easting",SOUTH], >> AXIS["Northing",SOUTH], >> AUTHORITY["EPSG","3995"]] >> >> GRASS :~ > g.region n=2930000 s=-2500000 w=-4250000 e=4310000 >> nsres=10000 ewres=10000 -p >> GRASS :~ > v.proj location=latlong_wgs84 mapset=PERMANENT >> input=grid_10deg >> GRASS :~ > r.proj location=latlong_wgs84 mapset=PERMANENT >> input=natural_earth_global_landcover.rgb >> GRASS :~ > d.mon wx0 >> GRASS :~ > d.rast natural_earth_global_landcover.rgb >> GRASS :~ > d.vect grid_10deg type=boundary >> >> The resulting map looks as attached (hope I didn't forget to copy a >> command here). >> Indeed, d.grid doesn't looks as expected >> >> GRASS :~ > d.grid 10 -w >> .. is incomplete. Worth a bug report, IMO. >> >> Cheers, >> Markus >> >> -- Markus Neteler, PhD >> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.mundialis.de%2F&data=04%7C01%7Cjeir%40hi.is%7Cc4ce599d0faf40d3408608d8ada8dff2%7C09fa5f0e211846568529677ed8fdbe78%7C0%7C0%7C637450288118244590%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=R0%2BkMUwS4HSEjqNltZIopTVnEv7c%2FUSCfKjrHT%2BWOIE%3D&reserved=0 >> - free data with free software >> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgrass.osgeo.org%2F&data=04%7C01%7Cjeir%40hi.is%7Cc4ce599d0faf40d3408608d8ada8dff2%7C09fa5f0e211846568529677ed8fdbe78%7C0%7C0%7C637450288118254587%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=7zy0UjA7NFrLeIDwhmkpoHJQrGn05abGojvoPEpDXOw%3D&reserved=0 >> https://eur02.safelinks.protection.outlook.com/?url=https%3A%2F%2Fcourses.neteler.org%2Fblog&data=04%7C01%7Cjeir%40hi.is%7Cc4ce599d0faf40d3408608d8ada8dff2%7C09fa5f0e211846568529677ed8fdbe78%7C0%7C0%7C637450288118254587%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C1000&sdata=JB5zKZRxku4818pqUJirSvMG3lyrA%2Bx50LLUBzVxkyU%3D&reserved=0 >> _______________________________________________ >> grass-user mailing list >> grass-user@lists.osgeo.org >> https://lists.osgeo.org/mailman/listinfo/grass-user _______________________________________________ grass-user mailing list grass-user@lists.osgeo.org https://lists.osgeo.org/mailman/listinfo/grass-user