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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Put a boundary line on the image that is already clipped to shapefile, the boundary of the same shapefile in Python

I managed to clip the image to the shapefile, but when I plot I see that it is following the pattern of the shapefile, but I want the boundary to appear on the final image too. Here is the code fig, ...
Tshepho Manyothwane's user avatar
4 votes
1 answer
133 views

How can I label boundaries between two or more regions using their perimeter and making their names face each other?

I want to label the boundaries between different municipalities. I want to reach something similar to the image I´m attaching . I´m using the latest version of Qgis and tried many ways but without any ...
Xavier Sandoval's user avatar
1 vote
1 answer
96 views

Align edges of polygon to another polygon but only within a distance

I'm trying to align the edges of one polygon with another but only for a section of the polygon in ArcGIS Pro. Basically, I want to align the boundaries of the two polygons but only if they are close ...
RySmith's user avatar
  • 11
-1 votes
1 answer
80 views

Extract national boundaries from file [closed]

I would like to know how to extract national boundaries coordinates into a text file. I've downloaded some files from natural earth (like shapefile, json etc..) but I don't know how to use them. My ...
Fla Vio's user avatar
  • 11
0 votes
0 answers
57 views

Extract boundary from merged polygon QGIS

Summary of situation: i got several layers with different parts of one territory, there are not only boundaries and square but also other stuff (i mean all lines inside) I merged layers and turned ...
Анна Б.'s user avatar
1 vote
0 answers
60 views

How to create a boundary where the only things to be visualized from the main layer are inside that boundary [closed]

I'm trying to do something like this: I'm only interested in the things inside that polygon. How can I do that? I'm using QGIS 3.28.3 'Firenze'.
Scipio's user avatar
  • 131
3 votes
1 answer
2k views

World Map without break line at 180 Meridian (Russia) [duplicate]

I want to create a map of the world (in my case Winkel Tripel but could be Miller or Equal Earth as well) showing Russia's full extent to the right, like in this example - which might be a very common ...
boess's user avatar
  • 47
1 vote
1 answer
62 views

Thiessen polygon delineation within a feature (polygon) not extent

I am trying to create Thiessen (Voronoi) polygons, based on points with a defined shapefile (separated polygons). The output should be inclusive to the feature. The output I receive now is the ...
Karim Fouali's user avatar
0 votes
1 answer
153 views

What spatial interpolation is going on with interpolate_pw: population weighted or population-areal weighted?

I think I want to use interpolate_pw from the tidycensus R package to interpolate data from 2000 to 2010 county boundaries. The R documentation describes this as population-weighted interpolation. The ...
tchoup's user avatar
  • 63
1 vote
1 answer
93 views

Moving polygon to edge of boundary using QGIS

I have a set of polygons that have been drawn using a set of plotted addresses. All of these polygons fall within a geographical boundary of the local area. As the boundary is drawn using local ...
user avatar
2 votes
0 answers
329 views

How to create a boundary polygon around raster extent (.tif) in QGIS

I would like to create a polygon around the raster (.tif) extent so I can calculate for instance the area in m2 within the polygon. When I try to Polygonize or Clip raster by extend (and delete the 0 ...
Aurora's user avatar
  • 133
0 votes
1 answer
143 views

QGIS: How do I clip away rivers extending beyond my state shapefile? [duplicate]

Re-learning QGIS after a four-year hiatus. I'm trying to make a basic map of the state of Nebraska, complete with county boundaries and a river-system shapefile. I have both shapefiles present in the ...
LeMatticus's user avatar
0 votes
1 answer
69 views

How to create a rough boundary/contour around a binary raster?

I want to create a very rough boundary or a contour around the below attached raster. It should mainly contain the "big" black pattern without the smaller black spots but with the white ...
OmteK.'s user avatar
  • 81
0 votes
0 answers
153 views

Create raster from numpy array with boundaries

Working on creating a raster with a constant value for all pixels for land with python. A sample raster is read to get the projection, geotransformation for the the new raster. The raster has the US ...
Arun.R's user avatar
  • 1
-1 votes
1 answer
121 views

Where can I find a map of US county boundaries that reasonably shows the boundaries over bodies of water?

Census, ESRI, and others provide shapefiles and feature classes of US county boundaries, but all the data sets I can find seem to clip the boundaries at the shoreline. So they really only show the ...
Jim Titus's user avatar
1 vote
1 answer
62 views

How to filter points (LAT, LONG) on a map within a line boundary I created

I am fairly new to QGIS and I have a data set of points that I have plotted with lat & long. The points cover a large area and I'm am trying to figure out if there is a way to only show the points ...
user212201's user avatar
4 votes
1 answer
423 views

How to show pixel boundaries of a given raster in QGIS?

The Norwegian Meterological Institute provides historical weather data. I download one of these .nc files: curl https://thredds.met.no/thredds/fileServer/ngcd/version_22.09/RR/type2/2022/08/...
zabop's user avatar
  • 1,308
0 votes
1 answer
108 views

Plotting ERA 5 Data for Specific Region on Google Earth Engine [closed]

I am trying to plot (show data on interactive map) ERA 5 daily averaged Precipitation, but I can't figure out how can I plot for a specific region (bounding box)? The map shows the data for the whole ...
Muhammad Iqbal's user avatar
0 votes
2 answers
51 views

Unable to join data from another layer

I have two polygon layers, I want to join the data based on the location from one layer to another layer. But only field is joining not the data. In image green is one layer and red is another layer. ...
Bruno B's user avatar
  • 769
2 votes
0 answers
74 views

Merging layer features by boundaries

I'm trying to combine the features from a layer in QGIS by distance. Basically I have the following layer with some features. I wanted to remove the small gaps (as seen in below image) between them. ...
Alec's user avatar
  • 21
1 vote
0 answers
47 views

Eliminating overlaps and gaps between polygons using ArcMap

I work in ArcMap 10.8 with an Advanced level license. I work with geological maps. In particular, the scale is 1:500000. I have a lot of line objects (different elements of a relief) that have common ...
Ярослав Вингард's user avatar
1 vote
1 answer
68 views

Can't make sense of (UTM?) boundaries coordinates from Statistics Canada

I downloaded a GML file of cities boundaries from Statistics Canada, but I can't make sense of them. For example, when looking at the boundaries for a city north of Toronto (Markham), the first ...
Pedram's user avatar
  • 13
8 votes
3 answers
404 views

Calculate length of common boundary

I have two different layers, the pink and the blue one. The green polygon is given by the intersection of the other two layers. I want to calculate the length of the common boundary line between the ...
anea's user avatar
  • 161
2 votes
0 answers
59 views

Boundary Placement in QGIS 3.x

in ArcMap there is a great function for polygon labels - boundary placement. So at the boundary with a new polygon the labels of both polygons are displayed opposite each other. Is it possible to do ...
geoinformstory's user avatar
3 votes
2 answers
451 views

Clipping vector layer with preserving boundaries of polygons in QGIS

I would like to clip a vector layer containing buildings by a rectangular boundary (also a vector layer). However, rather than cutting straight through the buildings at the boundary, I want it to ...
Topow's user avatar
  • 361
2 votes
1 answer
141 views

Clustering of points but with a condition of not crossing set of lines

I have multiple sets of around 200-300 points and I have the following requirements: Cluster the points in each set into a group of points with a minimum & maximum number (as defined by me). In ...
Akhilesh jj's user avatar
4 votes
2 answers
795 views

Creating different kind of outline for many polygons in QGIS

Is it possible in QGIS 3.4 Madeira to change stroke width on number of polygons? But I want only to outer boundary be different thicker line and I want to inner boundary remains thinner. Example: All ...
Shai Hulud's user avatar
7 votes
2 answers
2k views

Higher resolution of country borders

I have been looking and looking for a long while, but I was unable to find any freely available datasets for country borders with resolution higher than 1:1000000. I found this strange as I thought ...
David Kan's user avatar
0 votes
0 answers
67 views

ArcMap minimum bounding geometry around groups of lines massive spike stretching far into the distance

ArcMap 10.4.0.5524 for Desktop. No internet connection. I have a bunch of lines that represent roads. I would like to make convex hulls to isolate groups of these roads. When I do this in ArcMap, a ...
PencilBox's user avatar
2 votes
3 answers
194 views

Avoiding buffer exceeds layer boundaries in QGIS

I generated random points within my map in QGIS. Then I created a buffer zone of 5km around each point because it is necessary for my analysis. However, now the buffer zone crosses over the layer ...
ameliemiaa's user avatar
3 votes
0 answers
98 views

Adding attribute of polygon orientation depending on neighbors in QGIS

I have a shapefile with buildings as polygons. Is it possible to add attribute columns referring if the polygon boundary is "other polygon" or "outdoors" for a certain orientation (...
Ricardo Gomes's user avatar
1 vote
0 answers
118 views

How to find average distance of points in polygon to boundary of polygons?

I have a layer of polygons and a layer of points that I lay on top of those polygons. Some polygons, which I will refer to here as "zones", will contain 1 point within their boundary, and ...
LostinSpatialAnalysis's user avatar
5 votes
1 answer
124 views

Defining river boundaries so that TIN interpolates within those boundaries

I am a new QGIS user just learning the product. As part of our works we take depth soundings around river bends. I have worked out how to do basic contours with colour bands in the background using ...
kanekane's user avatar
1 vote
0 answers
112 views

Generalise low resolution World Bank boundary data

I'm trying to generalize World Bank Official Boundaries:World Boundaries GeoJSON - Low Resolution from https://datacatalog.worldbank.org/dataset/world-bank-official-boundaries using QGIS 3.18.3, using ...
Michal Charemza's user avatar
0 votes
1 answer
110 views

Polygon coordinates are wrong after shapefile import

I have shapefile I have imported, but the polygon coordinates are wrong. Was the shapefile exported incorrectly or is there something I'm missing. Point 30.8843 -29.9688 should fall in the boundary.
James Murray's user avatar
7 votes
2 answers
862 views

Finding distance from points to the boundary of the nearest polygon in Python

I asked this question on stackoverflow.com but it seems that doing so here is a better option. Context: I want to compute the distance from points to the closest boundary of the closest polygon to ...
flucoe's user avatar
  • 301
1 vote
1 answer
749 views

Extract administrative boundaries with physical borders at the coast line from OSM data

I successfully downloaded the OSM data from https://www.geofabrik.de/ and converted the .osm.pbf file to a .gpkg using og2ogr. Now I want to extract administrative boundaries using DB-Manager and SQL: ...
parallax's user avatar
  • 1,472
0 votes
2 answers
522 views

How to move data according to the distance [closed]

I have a data in the shapefile format. Now I have to move them according to the boundaries. Is their any solution to move according to the distance without manually. I want to select the data with ...
Bruno B's user avatar
  • 769
1 vote
0 answers
477 views

Find nearest boundary of inner feature (Turf.js)

Imagine a GeoJSON FeatureCollection that contains a boundary and a feature. The feature should be thought of as a Building and the boundary as a plot of land. When rendered this shows the follow https:...
YayoUK's user avatar
  • 11
1 vote
0 answers
121 views

Edge detection from Google Earth basemap in QGIS

I would like to detect boundaries of agricultural fields for 70 different polygons spread out across a country. Is it possible to run an edge detection algorithm using the google earth (or equivalent) ...
Rachel's user avatar
  • 93
3 votes
1 answer
472 views

Get footprint or boundary of LIDAR data

I am using the lidR package in R to manage my ALS data. I was having problems generating DTMs on the edge files of my catalog because the tool lidR::grid_terrain() was doing some interpolation between ...
candelas762's user avatar
-1 votes
3 answers
2k views

List of extreme latitudes and longitudes for each US state?

I need a list of extreme latitudes and longitudes for each US state. That is, max / min latitude, max / min longitude. The purpose is to exactly center each state map when initially shown. I found ...
Daniel Goldman's user avatar
0 votes
1 answer
114 views

Bounding Areas using Feature Collection values (RESOLVE Ecoregions 2017)

I'm pretty new to the Earth Engine and have been working through some of the tutorials to familiarize myself with it. I have very little code experience. What I am trying to accomplish is creating a ...
Carey Johnston's user avatar
2 votes
1 answer
130 views

Is this ST_Relate result expected?

The following PostGIS query involving ST_Relate gives FFFFFF102 as its result: SELECT ST_Relate( ST_GeomFromText('POLYGON EMPTY'), ST_GeomFromText('MULTILINESTRING((0 0,0 1),(0 1,1 1,1 0,0 0))'), ...
Peter Stace's user avatar
3 votes
2 answers
804 views

Draw circles around points

I have a CSV layer of points which I have succesfully imported into QGIS. My assets are a bit like wireless access points and I cannot have any of the points on the same channel within 2km. I ...
David I's user avatar
  • 51
3 votes
0 answers
126 views

Identifying which shared boundary is longest using QGIS

This is an evolution from How to specify dependable layer names in QGIS Processing Modeller but should be considered completely separately. I am creating a model in QGIS (3.10.3) Processing Modeller (...
Bruce Mitchell's user avatar
0 votes
1 answer
119 views

Determining if species point data is upstream or downstream of artificial fish passes using ArcGIS Pro

I am working with ArcGIS Pro. I am working on a project to determine how to prioritize restoration of artificial fish passes. I have been supplied with species point data, point data of the artificial ...
Dan's user avatar
  • 1
-1 votes
1 answer
85 views

Change pixel values of the open Sea to noData values

I want to calculate, which land areas of my elevation raster data set are under a specific elevation height. The open sea with pixel values of 0 should not be included in the analysis. I want to ...
Dominik W.'s user avatar
0 votes
3 answers
58 views

Separate boundary from adjacent polygons [closed]

I have a list of polygon features that share a common boundary. Is it possible to extract that line somehow? I am thinking about making a spatial join that shows me polygons that share a line segment, ...
swisscheese_95's user avatar
2 votes
0 answers
101 views

Empty pixels in polygon border

I have a vector shape file with the basins of South Carolina. Some of the sub-basins polygons have a "hole" or no data pixel in their boundary (See photos for reference 2) and I need them to ...
Luna Paluna's user avatar