Questions tagged [antarctica]

For questions which are specific to the region/continent of Antarctica.

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QGIS - points at the North and South Pole disappear in the composer

I am using QGIS 3.4 to produce maps of the Arctic and Antarctic with weighted points from a csv file. I noticed that I lose the points at the North and South Pole when I add the map in the composer. ...
3
votes
1answer
61 views

Equal area projection of Antarctica ?

I was looking for an equal area projection of Antarctica, but it seems that the Lambert Azimuthal Equal Area (https://epsg.io/3974 , also called 102020 by ESRI) is deprecated because it is not a "true"...
4
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0answers
87 views

Showing Polar coordinate grid?

I've found some maps for Antarctica https://nga.maps.arcgis.com/home/webmap/viewer.html How can I show polar coordinate grid for it? I've got the grid source code in grid_wgs.js (I use OpenSeaMap ...
0
votes
1answer
315 views

Tiled Web Map; what tile provider offer antarctic map tiles?

General Idea: I plot Sentinel-2 and Sentinel-3 images on a web map in a Jupyter Notebook using ipyleaflet. This works perfectly fine with the default Mercator projection. For images at high latitudes ...
2
votes
0answers
409 views

How can I rotate a map layer in QGIS so that center of map always have north upwards?

I'm working in the polar regions and make maps in different scales. The convention is to show e.g. the Antarctic continent with the prime meridian upwards on the map and polar stereographic projection....
5
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1answer
380 views

QGIS and the South Pole: bug or feature?

I am trying to work with some data from Antarctica in QGIS. I have defined this new projection: +proj=laea +lat_0=-90 +lon_0=0 +datum=WGS84 +units=m +no_defs And started adding a few vector layers. ...
9
votes
3answers
2k views

What coordinate system is this netCDF raster?

I obtained a netCDF raster file, but I couldn't get any metadata to get the name of the coordinate system the raster has been built on. The raster itself doesn't have any coordinate system embedded. I ...
11
votes
1answer
418 views

Point sampling along a pole-wrapping coastline with PostGIS

I am working on a task that requires me to get sample points every 1000 km along coastlines, and have run into a problem with Antarctica. From what I can tell, it seems to be an issue with the use of ...
8
votes
2answers
247 views

Choosing polar projection and tiling scheme for web mapping of polar regions?

I am looking for examples of web maps focusing on polar regions (Arctic or Antarctic) preferably using a polar projection. What polar projection and tiling scheme could be used for such web mapping ...
9
votes
2answers
4k views

What determines “west” in Antarctica?

Hopefully this isn't so far afield as to get banned - apologies in advance to those who think it doesn't belong. This article discusses a region of Antarctica which is described as "West Antarctica". ...
8
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7answers
7k views

Intersection algorithm that correctly handles the 180° meridian and poles?

Is there a well known intersection algorithm that correctly handles 180 meridian and poles? For example, let's say we have a list of latitude and longitude values that represent Antarctica. Let's ...