Geographic Information Systems

Questions tagged [boundaries]

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

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How to locate the US zipcodes at the boundary of a state, say Wisconsin

I would like to identify all the zipcodes at the boundary of a certain state. For example, 53566 Monroe belongs to the southern boundary of Wisconsin. I am wondering if there is any way to do this ...
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36 views

Building query with st_shared in QGIS

I have a table with county polygon boundaries (named "counties"). I need to build a query that identifies a particular county as well as any adjoining counties that share the same border. Have tried ...
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18 views

QGIS: Bug in boundary layer attribute values. cluttered attribute values after performing a join

I've managed to join a boundary map layer with an delimited text layer to produce a choropleth map. However, suddenly there was an error in the attribute value, its all cluttered when I reopened the ...
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26 views

Break a bounding box into smaller boxes (coordinates)

My objective is to create a collection of bounding box coordinates that I can supply to a search function. The idea is that I have the search function search smaller geographic areas, instead of one ...
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1answer
29 views

Eliminating gaps between polygons using ArcMap?

I work in ArcMap 10.4 with an Advanced level license. I'm searching for a fast and effective method for eliminating gaps between polygons, so that one polygons follows boundary of the other. In other ...
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2answers
53 views

Filtering out data points on water or outside specified polygons using QGIS?

How do I filter out points that lie in the water or outside specified polygons? For example I want to filter out the erroneous points in the oceans in one project, and filter out all points not in ...
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1answer
24 views

Minimum and maximum coordinates of a polygon in Earth engine

I have a Fusion table having shape-files of various districts of India and I am using this fusion table in Earth Engine code. var district = ee.FeatureCollection('ft:...
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20 views

Create a attribute based on what polygon point features are located inside of

I have two polygons that delineate two site boundaries. I have a bunch of point features inside the polygons. Is there a way to create a attribute that indicates what polygon boundary the point ...
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1answer
30 views

Summing data from a smaller boundary shapefile to a larger boundary shapefile if the boundaries do not align in ArcGIS Pro?

I have a census tract boundary shapefile for the province of BC, with around 620 polygons, varying in size. I have another boundary shapefile, BC service areas, this one has much larger polygons and ...
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1answer
32 views

Display adjacent polygons without the shared borders becoming darker than the others?

When plotting adjacent polygons, for instance, the states of a country, the lines are usually thicker/darker in the border between two polygons, compared to a polygon on the edge of the map. That ...
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36 views

Missing Data in District Boundaries

I was required to download my countries road data from OpenStreet Maps for a project I'm currently working on. For this I used the OSMnx Library. However, as my RAM was insufficient to download the ...
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1answer
27 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
141 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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38 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
73 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
23 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
181 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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25 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
40 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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1answer
65 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
203 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
296 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
72 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
39 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
241 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
32 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
97 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
343 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
153 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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154 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
1k 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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51 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
273 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
622 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
130 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
330 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 ...
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1answer
86 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
48 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
42 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
176 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
88 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
346 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
905 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
640 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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