Questions tagged [antimeridian]
The antimeridian, or 180th meridian, is the meridian which is 180° east or west of the Prime Meridian with which it forms a great circle. It is distinctive among meridians in that it is common to both east longitude and west longitude.
83 questions
3 votes
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Grid disappear if antimeridian is within the map in QGIS Layout
I've done small personal projects in QGIS, but I think I lack some basic knowledge. My background is in amateur astronomy, and in this case, I'm working on a full-sky celestial chart (transforming ...
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0 votes
1 answer
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Dissolving region crossing antimeridian
I downloaded the shape of the Chukotka region (Russia) that are on two hemisphere via overpass turbo. Here the request: [out:xml] [timeout:25]; {{geocodeArea:Чукотский автономный округ}} -> ....
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1 vote
0 answers
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Unable to fix 180th meridian split (multipart feature) for WGS 1984 Web Mercator projection
This issue has already been brought up several times on here (and elsewhere—Esri Community, Reddit, YouTube, etc), but I've found a new wrinkle. Context: This is ArcGIS Pro 3.4.0. I am using the WGS ...
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2 votes
1 answer
92 views
Map tiles crossing 180° meridian with Contextily/Stadia Maps
I'm trying to generate a map of New Zealand and surrounding areas using Contextily with Stadia Maps. When requesting tiles that cross the 180° meridian, the tiles appear backwards/incorrect. I tried ...
0 votes
1 answer
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How can I completely solve all issues related to antimeridian?
Assume I want to work with raster and vector data for regions near antimeridian (180 degrees). Known problems are: Incorrect visualisation of polygons (and probably features of different types) ...
2 votes
1 answer
178 views
Choosing projection for islands in South Pacific (specifically Tuvalu)
I'm working on a project for Tuvalu and most projections cut off pretty much exactly where Tuvalu is. They are ok for zoomed in maps but as the map cuts off directly to the east I can't show ...
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0 votes
1 answer
343 views
Prevent antimeridian geometry artifacts with H3 and Leaflet
I am drawing hex bins via h3geo on a Leaflet map and am being bitten in the behind by the antimeridian artifacts using a pretty standard approach const map = L.map('map').setView([0,0], 2); const ...
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0 votes
0 answers
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Projecting world map from Equirectangular to Azimuthal Equidistant results in seam along 180th Meridian
I am attempting to reproject shapes from Equirectangular to North Pole Azimuthal Equidistant. However, I have noticed that it creates a seam along the 180th Meridian: Notably, the polygon containing ...
1 vote
1 answer
305 views
Getting continuous map extent using QGIS
All the basemaps on my QGIS stop just to the east of New Zealand. Is there any way I can make the extent continuous (basically restart from the other side)?
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0 votes
1 answer
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ArcGIS Pro - "Points to line" issues with the date line
I have seabird tracking data from the South Pacific with several of the animals crossing the international date line during their travels. When I try to generate a polyline from the corresponding XY ...
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0 votes
1 answer
454 views
Folium.geojson Multiline String doesn't wrap around the map, creates crossing lines across the map
I am having an issue using Python and folium regarding GeoJSON features. I made a simple map using folium and displayed tsunami information as well as specific colors for the different earthquake ...
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2 votes
0 answers
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Chatham Islands Bounding Box issue in EPSG:4326 on GeoServer
I have vector layer published on GeoServer for New Zealand territory including Chatham Islands, that are close to Anti-Meridian line: Layer is sourced from PostgreSQL DB, and it doesn't have ...
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0 votes
1 answer
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New Zealand map that includes Chatham Islands
I am trying to create a map of New Zealand in R (sf, ggplot2), that includes Chatham Island. I am accessing the online New Zealand map from Natural Earth. Online I can see the Chatham Islands on the ...
1 vote
1 answer
422 views
Draw line between China and South America through the Pacific Ocean in Leaflet
I am relatively new using Leaflet.js. I want to draw a polyline in Leaflet.js between China and South America through the Pacific Ocean. Instead, I can only draw this line through both places through ...
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2 votes
0 answers
178 views
Raster crossing anti meridian in QGIS
See the raster overlayed in QGIS below: I am trying to project a GeoTiff in QGIS that crosses the anti meridian, but the area circled in red in the above picture is exactly 180/-180, so there is some ...
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