Questions tagged [boundaries]

For questions related to data for boundaries of real world features, such as those of administrative regions, cities, and towns.

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2
votes
0answers
331 views

postgis st_relate polygon inside another and sharing a boundary

I am trying to select polygons inside an other one WITH a common boundary. It seems that st_relate is the way but I can't find the right matrix, even if I don't see where the fault is in : st_relate(...
2
votes
3answers
1k views

Removing black pixels of georeferenced image without affecting interior pixels using GDAL?

I am looking for an algorithm or function in GDAL that can remove black pixels out of image boundaries. Note that I've tried gdal_fillnodata (gdal.FillNoData) and the result was good in most cases; ...
0
votes
1answer
978 views

Determining if point on boundary using shapely? [closed]

I'm new to Python, and I want to test if a certain point lies ON the (boundary) of a polygon - not inside, not outside, just if it's on the boundary. The points and polygon already defined polygon = ...
2
votes
2answers
357 views

QGIS create boundaries from background image

I want to manually trace over an existing map image to replicate the boundaries using QGIS. If this was an existing polygon and I need to split this into 3 separate polygons, I would take the ...
1
vote
0answers
986 views

European postal code shapes provider

I am looking for a single (paid) provider of postal (zip) code shapes (boundaries) for countries in Europe. I hope to find reliable partner with reasonable pricing and update policy. What I need are ...
1
vote
1answer
186 views

Unable to project GPM precipitation data correctly in QGIS?

After downloading the GPM (Global Precipitation Measurement) data from FTP, I tried opening the image in QGIS and I get a popup message saying CRS was undefined. As I know the projection is set to ...
0
votes
2answers
158 views

Shapefile from heading and distance directions for property boundary

I have a survey with heading and direction points describing the boundary for a rural property in Brazil. I am in correspondence with someone there who needs a shapefile (I believe he mentioned kml or ...
0
votes
1answer
92 views

Symbology: different ways to display categorised data QGIS 2.16 [closed]

I have a database of 100 entries which has been categorised using a column of data that has 20 categories which essentially breaks up my map into 20 regions. I'm seeking advice on ways how to create ...
-1
votes
1answer
288 views

Polygon gap filling

I am working in ArcGIS and I have an urban center boundary, generated by a population-grid dataset. However, I want to fill in the gaps inside the urban center boundary (see the image below areas ...
-1
votes
3answers
627 views

What are the state border outlines called which treat every state as a single entity, including surrounding waters?

What are the state border outlines called which treat every state as a single entity, including surrounding waters? I need to create a latitude/longitude pairing of each state's "borders", which I ...