Linked Questions
3
votes
1
answer
1k
views
Escaping cut of western/eastern hemispheres in QGIS?
I am very new to QGIS and GIS in general, so I am struggling with the following: when I do a map of Russia, I get the part next to Alaska being drawn far left from Europe, as it lies behind 180o... I ...
- 31
4
votes
1
answer
1k
views
Using azimuthal equidistant projection with buffers in QGIS?
I am a journalist.
My goal: A globe that shows the range ok North Koreas ICBMs - the azimuthal equidistant projection centered on NK.
My steps so far:
Created Standard QGIS project (EPSG:4326)
...
1
vote
1
answer
2k
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How to create polygon from my coastline in qgis? [duplicate]
I've downloaded the data from Natural Earth (coastline at a scale 50 million), I've cut the coastline into my study area, I wanted to clip other vector datasets as well, for this I wanted to convert ...
- 507
5
votes
1
answer
1k
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Dissolving reprojected features split into two parts by international dateline (180 degrees) in QGIS
I am trying to view the World EEZ polygon from Marine Regions.org, but centered on the Pacific Ocean.
To centre the EEZ map on the Pacific ocean I followed these steps. The custom CRS from this ...
- 435
8
votes
1
answer
449
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QGIS incorrectly saving polygon with custom CRS, while correctly projecting it on-the-fly
I'm splitting a land polygon up in order to shift the centering of the projection to the Pacific ocean. I manage to successfully cut up the original polygon on the 22 meridian, and it looks fine when ...
- 848
4
votes
1
answer
1k
views
Offset the extent of a map projection in QGIS
I got this dataset from Natural Earth which contains every country on Earth as a shapefile. When I load it into QGIS, the easternmost part of Russia is cut and find itself west of Alaska, and I would ...
user165608
1
vote
2
answers
894
views
Convert shapefiles from WGS84 to Miller Projection
I have some shapefiles of the world from Natural Earth at WGS84. I would like to convert them to the Miller Projection. I have ogr2ogr, but I'm not sure what the parameters for this conversion ...
- 161
4
votes
2
answers
436
views
How to digitize a "ringed" topographic-style choropleth map?
I have a choropleth map of plankton distribution in the ocean that I am digitizing. However, as you can see, there are many features within features creating rings, almost like mountains on a ...
- 848
1
vote
2
answers
608
views
How to update polygon longitude if negative?
I have a polygon, with longitude in [-180, 180], with 2 parts around the dateline.
I want to make a map centered on the date line.
My plane is to:
1./ update the longitude, so that if lon < 0 , lon=...
- 891
2
votes
0
answers
746
views
QGIS map wraparound in WGS84
I am learning QGIS.
I'm working with the 'Natural_Earth_quick_start' data set from the tutorials. The WGS84 projection gives me the view I want. However, this looks like a sheet of paper, and on the ...
- 21
4
votes
2
answers
319
views
Reprojecting a shapefile with ogr2ogr when a line is crossing the international date meridian
I have a line shapefile with a local transverse mercator projection
("+proj=tmerc +lat_0=50 +lon_0=172.5 +x_0=0 +y_0=0 +a=6371000 +b=6371000 +units=m +no_defs") and I want to reproject it into EPSG:...
- 730
1
vote
1
answer
247
views
Connecting points located in opposite side of international date meridian using Python GDAL/OGR?
Given a list of coordinates, I need to create a line shapefile joining each of the point with a Python GDAL/OGR script.
The procedure described here Convert XY points to a line?
works fine in almost ...
- 730
4
votes
1
answer
257
views
Countries cutting off at the edges of Mollweide projection
I have a custom CRS centering on the Pacific ocean with the Mollweide projection:
+proj=moll +lon_0=-158 +datum=WGS84 +units=m +no_defs +lon_wrap=-158
My countries are split at the 22nd meridian, ...
- 848
2
votes
0
answers
205
views
Joining 2 vector pieces of one country into one vector polygon using QGIS?
How to eliminate seam on meridian 168W. Seam is on Russia and Antarctica?
I have done my projection in this way:
QGIS display world country shape files centered on pacific ocean using Robinson, ...
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