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1d
comment GDAL: gdalwarp wrong transformation to “South_Pole_Lambert_Azimuthal_Equal_Area” EPSG:102020
102020 is an Esri projected CRS, not an EPSG one. It may not be defined in the PROJ4 tables.
1d
comment Can Mars be mapped in ArcGIS
Note: ArcGIS doesn't have any projected coordinate reference systems for the other planets and moons. If you want to use a projected CRS, you'll have to make a custom one.
1d
comment calculating ratio of areas on a sphere
Densify: add more vertices to the edges. A straight line in lat/lon coordinates could be curved when projected, so you want to make sure the original polygon's shape is...no preserved as such but has no unwanted distortion.
1d
comment How to get all postal code using polygon mapping
duplicate? although it has no accepted answers (but there is a comment) Singapore postal boundaries
1d
comment Coordinates translation issue (from EPSG:23030 to EPSG:4326)
The PostGIS towgs84 values are the generic ones for ED50 to WGS84. A more accurate one for Spain is a 7 parameter one: -131.0,-100.3,-163.4,-1.244,-0.02,-1.144,9.39 AKA EPSG:1633. If you want to stick with a 3 parameter one, EPSG:1145, -84,-107,-120.
Feb
2
reviewed Leave Closed GeoServer - Web application
Feb
2
comment azimuth and distance from various functions in qgis
loxodrome = rhumb line
Feb
2
comment Measure Accuracy orthophoto
Based on your comments, it sounds liked the GCP and the orthophoto are using different coordinate reference systems and you're going to have to project the GCP to the orthophoto's CRS.
Feb
2
comment ogr2ogr Shapefiles to Postgres SRS problem
EPSG:23031 (ED50) and EPSG:25831 (ETRS89) are on different GeoCRS (datums). Is there a transformation being performed?
Feb
2
comment Unable to transform from EPSG:3857 to UTM in Geotools
Why are you mixing UTM zone 30 and Michigan Central state plane zone? OH, you've got a mistake in your code somewhere, instead of 3857, you've got 3587, NAD83 (NSRS2007) / Michigan Central.
Feb
1
revised azimuth and distance from various functions in qgis
tried to fix table formatting
Jan
29
comment Align raster to fishnet using ArcGIS 10.3
Can you describe a bit more on how the two are not aligning? Raster is bigger than fishnet, fishnet is bigger, etc.?
Jan
29
comment I have a .adf file and want to select an elevation range
Check out this question: gis.stackexchange.com/questions/27420/…
Jan
29
comment opnenlayers 2 marker icon showing up at wrong coordinates position
Guess: what happens if you change the Projection parameter to "EPSG:3857"?
Jan
29
comment opnenlayers 2 marker icon showing up at wrong coordinates position
Based on where you say the marker is showing up, I think the map is using EPSG:3857. The lon/lat location is being treated as if it's already in EPSG:3857.
Jan
29
reviewed Approve gdalwarp error cropping raster
Jan
28
comment How do I handle heading in UTM coordinates?
Search convergence. That's the angle at a point between grid North and geodetic North.
Jan
28
reviewed Reopen Strategies to keep cost of hosting your own map server and geocoder low
Jan
28
reviewed Approve software-recommendation tag wiki
Jan
28
reviewed Approve north-korea tag wiki excerpt