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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21 views

Export boundaries as gpx file from Open Street Map?

How can I export the boundaries of this area as GPX? Is there any way? https://www.openstreetmap.org/relation/1595533#map=14/50.8945/14.3287 Background: I'm planing a hiking tour through the ...
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3answers
82 views

Extracting single boundary from multipolygon in PostGIS

I am trying to find a single external boundary either polygon or line from the multipolygon using st_boundary in PostGIS query. The function doesn't work. What could be the issue?
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31 views

Fill raster to shapefile boundary

I created TIN from contour lines, then I convert this TIN to Raster. After that I clipped the raster by Extract by Mask tool, now the problem is raster does not fill whole boundary. Below image show ...
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1answer
58 views

How to extract 1 band image (Boundaries) in Google Earth Engine Code Editor

I am quite new in remote sensing and trying to get boundaries of fields to build a prediction model in R. I tried Canny and Hough algorithms but the results are not satisfying. Lastly, I tried the ...
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1answer
20 views

Removing Overlapping Outlines Within a Single Feature Class

I have a polygon feature that is overlapping itself. Both of the polygons in the image below are from that same feature. I do not want to dissolve the boundaries, but I only want one of the outlines ...
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3answers
129 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". ...
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23 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 ...
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1answer
29 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-...
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56 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 ...
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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 ...
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1answer
162 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 ...
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1answer
227 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 ...
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1answer
68 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 ...
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2answers
38 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, ...
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2answers
202 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((-...
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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 ...
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1answer
31 views

Seeking Australian Irrigation Boundaries? [closed]

Does anyone know of a source for Irrigation district boundaries in Australia, specifically NSW?
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1answer
86 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 ...
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0answers
325 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.
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1answer
43 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 ...
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2answers
131 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 ...
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110 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 ...
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1answer
844 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+...
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50 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 ...
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1answer
246 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 ...
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1answer
518 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 ...
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0answers
123 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 ...
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2answers
260 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
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1answer
77 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 ...
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1answer
1k 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 (...
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1answer
46 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.
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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?
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0answers
41 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 ...
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0answers
155 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 ...
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1answer
77 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 ...
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1answer
326 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 ...
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1answer
765 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 = ...
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1answer
589 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 ...
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0answers
50 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 ...
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2answers
201 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 ...
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1answer
183 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 ...
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0answers
303 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(...
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86 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 ...
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1answer
100 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 ...
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1answer
133 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") ...
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1answer
106 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.
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1answer
211 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 ...
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1answer
88 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 ...
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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; ...
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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-...