Questions tagged [boundaries]
For questions related to data for boundaries of real world features, such as those of administrative regions, cities, and towns.
0
votes
1answer
25 views
Boundary point snapping post process - QGIS/PostGIS [on hold]
I have a set of polygons that have been digitised without snapping
I want to achieve this after the event such that shared boundaries share common points.
I have QGIS and PostGIS
At present the ...
1
vote
2answers
39 views
Smooth Edges of polygon in postGIS
I have a shape that looks like this:
It's the end result of a buffer, merge, bugffer and Chaikin Smoothing process in PostGIS. It's almost perfect however I'd like to remove some of the "fissures". ...
0
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0answers
20 views
Making Shapefile Hybrid Micro-Plot Boundary?
We would like to analyze in the field of precision agriculture the performance of a lot of hybrids that are planted in lines with no border between them. For this we need to make boundary or a border ...
-1
votes
1answer
25 views
Seeking New York Neighborhoods Boundaries?
I need a source of New York neighborhoods boundaries coordinates, I need to draw polygons around them just like this page is doing to Wingate, Brooklyn.
https://www.exrny.com/listings/121719/2-bed-in-...
0
votes
1answer
40 views
Exporting bounding area only via ArcGIS Pro?
I use ArcGIS Pro to export a layout as jpg format image.
I just wonder if any tools in ArcGIS pro can help me export the polygon area only and remove or symbolize the rest area as grey?
My quick ...
0
votes
0answers
27 views
Seeking school boundaries? [duplicate]
I have seen Where to get school zone shapefiles? which seems to be the closest to my need.
When I download the docs, either I have no ways to filter the document or I don't see all the schools. I ...
0
votes
1answer
73 views
From Overpass Turbo to GeoJSON without map
I would like to extract boundaries of some areas from Overpass Turbo in GeoJSON format.
At the moment I am using the website UI www.overpass-turbo.eu, write the query, execute it and export in GeoJSON ...
3
votes
1answer
98 views
Get exterior ring of a multipolygon using GEOSGeometry or PostGIS
I am trying to get the exterior ring of the multipolygon in the image below using GEOSGeometry (through GeoDjango) or Postgis, but I have not found an easy solution.
This is an example of a ...
2
votes
1answer
65 views
Showing only outer Fishnet boundaries
I have a fishnet layer where some empty cells are nested within. I'd like to only show the boundary of the filled cells (color set no fill, but no inner cell boundaries of adjacent cells). How can I ...
1
vote
2answers
36 views
Getting features for one polygon into another, Geometries do not line up using ArcGIS Desktop?
I have:
- Census Blocks
- Taxi Zones
The taxi zone shares a rough boundary with census blocks, but there are times where there is overlap due to a rough outline(In image, red line is Taxi Zone, ...
3
votes
2answers
139 views
ST_ConcaveHull interaction with ST_Boundary
I am trying to run a st_concavehull after st_boundary/st_exteriorring on polygons, however st_concavehull doesnt seem to reinclose the polygon properly. For example
SELECT ST_GeomFromText('POLYGON((-...
0
votes
0answers
13 views
Creating boundary parameter using QGIS? [duplicate]
I am using QGIS v 3.2. The data set I am using involves pipelines. I need to mark an exclusion zone which is running 50m either side of the pipeline for the entire length of the pipeline.
Is there a ...
0
votes
1answer
31 views
Seeking Australian Irrigation Boundaries? [closed]
Does anyone know of a source for Irrigation district boundaries in Australia, specifically NSW?
0
votes
1answer
66 views
Creating polygon from leased unit metes and bounds calls using ArcMap? [closed]
I have a dataset containing with metes and bounds listing an area.
I want to build a layer from these calls and produce the lines (polygons) that show the area.
I know there may be a bit of ...
1
vote
0answers
267 views
Getting boundary coordinates from given lat,long and radius [closed]
I have:
lat-long : (41.8719 , 12.5674 )
Radius: 50 meters
I want all the boundary coordinates from that given point.
I would like some scala code for this.
2
votes
1answer
37 views
Boundary of merged parcel feature does not disappear after merge
In QGIS, when I merge several parcel features using Merge Selected Features, some of the boundary of parcels still remains.
Steps I used:
Enabled snapping options.
Enabled Toggle Editing.
Select Add ...
0
votes
2answers
108 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
0answers
53 views
Where can I find data of city boundaries in the US?
I know there is previous question about this topic but there is no exact answer. Actually I was wondering, does city boundaries cover all around the nation without space?
I mean, for MA I found two ...
0
votes
1answer
499 views
Get Polygon boundaries of all cities or municipalities from whole country in GeoJSON
Is there a way to get geojson boudaries of all cities in a country ? The only thing I found is to find the geojson of only one city using this:
https://nominatim.openstreetmap.org/search.php?q=Czech+...
0
votes
0answers
48 views
Extract ad-hoc boundaries from pdf
I have a scanned map of the US in pdf that, in addition to state boundaries, has "delivery territories." These territories are exclusive areas within the US where different companies deliver their ...
1
vote
1answer
189 views
Google Maps City Boundary of Japan
When I see Japan area though Google maps, I see yellowish boundaries. It seems like places where many people are gathered.
I see them in another countries in France
I wonder what data are these and ...
3
votes
1answer
368 views
Distance from within boundary in Shapely
I'm new, although I am reasonably experienced in Python.
My question concerns Shapely, a library for spatial data. I am trying to assign some points as being within some distance d of the boundary of ...
2
votes
0answers
88 views
GeoServer CSS label along polygon boundary - overflow
I labeled a polygon along it's edge by using the boundary of an inside buffer:
label-geometry: [boundary(buffer(GEOM, -0.01))];
This works, but my problem is, that at certain zoomlevels/positions ...
2
votes
2answers
163 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 ...
2
votes
1answer
64 views
How can I color code national vs subnational boundaries in QGIS?
I'm trying to make a regional map of West Africa at the subnational level. I can't seem to figure out how to distinguish the subnational and national boundaries - right now, they're all black, and I'd ...
1
vote
1answer
811 views
Get bounds of featureGroup with multiple features
I tried looking into a solution for this myself, or an alternative way to load my layers, but I'm simply unable to.
I first load a geoJSON file through L.GeoJSON.AJAX(), then add the features (...
1
vote
1answer
38 views
Points drawn outside a certain area get placed on perimeter of smaller area
I am trying to add points to a table in MapInfo (geologic map) but cannot get points to display in correct location. Are there boundaries for tables?
How to change this?
I'm using Mapinfo 10.5.
0
votes
0answers
28 views
Extracting boundary ID in which polyline (Road network) runs using QGIS?
How to extract boundary ID in which a polyline(Road network) runs?
My map contains road network runs in different Blocks and District, I need to extract Block ID and District ID. In QGIS
-1
votes
2answers
62 views
obtaining coordinates of a shapefile
I created a voronoi polygon using the coordinates shapefile of over 3,000 enumeration areas. How do I get the boundary coordinates of each of the enumeration areas for mapping purposes?
2
votes
0answers
40 views
Polygons hull QGIS [duplicate]
I'm currently working with old french cadastre on QGIS, I've vectorised it and now I want to tile it. I've georeferenced it, but it's not sufficient for a great result. To improve the result, I would ...
2
votes
0answers
138 views
How to get points within boundaries which overlaps the anti meridian
Within my application I have a map and I'm showing markers on the map which represent objects that I get from the database. The objects have latitude and longitude. The objects are selected only if ...
-1
votes
1answer
58 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
278 views
Polygons for the districts of gulf area countries and middle east?
I need to find the lowest level possible polygons for a few countries, including KSA, Jordan, UAE, Lebanon...
By lowest level polygons, I mean districts like this one and even if smaller
Where can I ...
0
votes
1answer
513 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 = ...
0
votes
1answer
497 views
GIS data in Sweden [closed]
Does anyone know where to obtain GIS data relating to Swedish postcodes - shapefiles, population and point location data? I'm interested in both open data and licenced (purchased) data if it is ...
1
vote
0answers
44 views
Clip inside of GeoTiff using shapefile in QGIS
I'm looking to distract the red figures from the background imagery in the attached image. Normally i would use the clipper command in QGIS, but this only works if i only want to have the red figures ...
0
votes
2answers
134 views
Looking for world maritime boundaries in Geojson
I would like to use leaflet in order to display the world maritime boundaries (12 nm and 24 nm). Is there a reliable geojson source that I could use? If no geojson data is available, I am ready to use ...
3
votes
1answer
139 views
PostGIS ST_MakeEnvelope size direction change on geography
This doesn't really effect me but I was just wondering if you find this a little bit strange or not. I think this issue is probably cause of this question also but I think the accepted answer does not ...
2
votes
0answers
263 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(...
1
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0answers
76 views
OSM only label internal boundaries with Carto and Mapnik
Using the OSM workflow on switch2osm.org, we want to label all internal country boundaries but not external ones (coastlines).
There are 3 ways we could think of:
Is there any way to not show ...
1
vote
1answer
76 views
Looking for the census blocks that make up the most recent U.S. Congressional Districts
I am hoping someone can help me solve this or point me in a direction. I need to know what census blocks make up the most recent Congressional Districts (115th). I have found a file that the US Census ...
0
votes
1answer
130 views
Finding four states each of six pairs of which have common boundary using PostGIS?
A Mathematics SE question on common boundary points of connected sets inspires this one.
Construing the word "state" broadly (so that, for example, each province or territory of Canada is a "state") ...
3
votes
1answer
101 views
PostGIS function testing geometries, inside and boundary
Is there a st_????(A geometry, B geometry) in PostGIS that returns true when B is inside A and possibly shares a boundary ?
I would say no after reading the doc but something may have escaped me.
1
vote
1answer
188 views
How to draw boundaries to separate clusters?
I have used the R Project for Statistical Computing to make a map of clusters based on latitude and longitude by using the k-mean clustering.
Is there any software I can use to import the clusters ...
1
vote
1answer
77 views
Merged two polygons in QGIS, but can't get rid of old boundaries that remain inside it
I've merged two polygons in QGIS, but I've been unable to rid myself of the excess boundaries from the old polygons that continue to exist inside the new one. The only boundaries I would like to keep ...
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; ...
1
vote
1answer
37 views
How to export a list of intersections of 2 datasets of boundries/polygons
I am using the following datasets:
NYC Zip Codes: https://data.cityofnewyork.us/Business/Zip-Code-Boundaries/i8iw-xf4u
NYC City Council Districts: https://data.cityofnewyork.us/City-Government/City-...
0
votes
1answer
41 views
Create average boundary between raster classes
I have a raster with multiple fields in it representing glaciers. As the boundary between land and ice is not often strict, there are little ice fields outside the end of the glacier. I do a raster ...
0
votes
1answer
830 views
How to display international boundaries in a OpenLayers map?
I'm interested in displaying only the boundaries, coastlines and between countries, of the world through OSM. I'm a bit lost and I don't know what I should do.
I'm trying to display the OSM through ...
0
votes
0answers
23 views
generate a polygon that only keep its outside boundary [duplicate]
I have 25 different polygons as show in fig. below. These small polygons can form a bigger polygon without overlaps.
My goal is, according the data of 25 smaller polygons, to generate the bigger ...
