Questions tagged [within]
The within tag has no usage guidance.
51
questions
0
votes
2
answers
15
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. ...
- 259
5
votes
3
answers
146
views
Selecting all electoral division within local electoral area in QGIS
I have two vector layers:
electoral divisions (blue)(similar to counties)
local electoral areas (green outline) (similar to states).
I'd like to select all EDs 'within' a state using 'Select by ...
- 53
0
votes
2
answers
64
views
Equivalent or workaround for .within() method for arcpy.Point class that tests if point is within feature class
I am using ArcGIS Pro 2.6.
I am looking for a quick and dirty test that returns a Boolean to see if any ArcPy Point that I create is within a feature class.
Unfortunately, it seems that feature ...
2
votes
0
answers
41
views
Merging two layers and assign ID of bigger polygons to smaller polygons within bigger
I am basically new to QGIS and want to use spatial data to get the state identifiers for small polygons (say counties/zip areas) which are geographically inside the bigger polygons (states/cities). ...
- 21
1
vote
1
answer
48
views
ST_Within to find containing polygon (but same table?)
I have nested polygons and would like to set a parent_zone field to describe the polygon it is within. There will only ever be one to choose from (ensured by the 'type' filter).
I am trying:
UPDATE ...
- 57
2
votes
0
answers
34
views
Checking if one point from sf object falls within a specific polygon from different sf object in R [closed]
I have one sf object in R that consists of millions of GPS points of different persons (each point includes ID for each user). I have another sf object that consists of polygons that correspond to 100-...
- 21
4
votes
1
answer
335
views
How does GeoPandas' representative_point() work?
I need to compute points that, unlike centroids, are assured to be within a geometry. GeoPandas offers the method geopandas.GeoDataFrame.representative_point(), but I cannot find how it works. ...
- 187
3
votes
1
answer
115
views
NULL values when using overlay_within function in Field Calculator
I have two layers, a point layer and a polygon layer ('Sektorplan'). The polygon layer attribute table has a "Sektor" column ('1','2', ...).
The Goal
I want to add a new column ("Sector&...
- 53
2
votes
1
answer
115
views
Rule-based symbol for point within polygon in QGIS
I would like to use a set of rules to draw features from a point_layer that are within a polygon_layer.
Points that answer true to
("VAL_PROTECTION_EP3" = '1' AND "TYPE" = 1)
...
- 41
2
votes
1
answer
64
views
GeoPandas within() not returning any records
I'm trying to create a layer of all cities with 100km of the coast of Australia. The following is returning coastCities as an empty DataFrame.
I have performed the same operations in ArcGIS and it ...
- 117
2
votes
0
answers
151
views
Select lines in within a polygon (buffer) with PostGIS
I have one polygon layer "polygons" and one line layer "lines". I would like to create a layer with all line parts that are inside the polygon layer.
First I cut the lines in the ...
- 63
1
vote
1
answer
85
views
MariaDB St_Within
Recently I noticed that ST_Within stopped working properly on some features.
The geometry that breaks st_within has 1337 vertices (ESRI arc - many segments 1cm distance).
If I reduce the vertices ...
2
votes
1
answer
72
views
PostGIS: problem with point count result when they are over the polygon edge
I have a PostgreSQL 12 database with PostGIS (using EPSG 4326). There are some tables with millions of points, and others with polygons.
In general , I had no problems with the queries. However, I ...
- 21
1
vote
2
answers
112
views
Creating field that attributes what boundary set of points reside in
I want to be able to assign a point layer a new attribute field with the polyline that the points are within. What method would work best in this scenario?
- 175
3
votes
1
answer
593
views
Identify if the point lies inside the polygon in QGIS
I created a polygon using Iso-Area as polygons algorithm in QGIS. I have a point's coordinates and added it as a vector layer into QGIS. It is shown on the map that the point lies within the polygon. ...
- 379
2
votes
1
answer
80
views
Spatial Query for centroid of one feature falls within another
I am looking at doing a spatial query where I can find when the center of one feature falls within another. Both geometries are on different layers. For example, when the center (centroid) of an area (...
- 97
3
votes
3
answers
80
views
Calculating value of unique points in polygon in PostGIS
I'm working with a spatial PostgreSQL database that contains species records, there is a point layer 'spp_points', each point has a "spp_ID" and "spp_score" field. I also have a ...
- 304
5
votes
2
answers
103
views
Expression to show specific attribute of feature within (aggregate?)
I simply want to get a specific attribute (f.e. as label or default value in form) of a feature within another feature. Aggregate could do the job but it don't.
Hard for me to write it down, so let ...
- 7,653
1
vote
1
answer
192
views
OGR/Python- Check whether or not points are in a polygon
I have two shapefiles, one points file and one polygon. They are in the same projection (Lat/Long). I would like to run a quick command-line command or a Python script with the OGR module that creates ...
- 339
2
votes
1
answer
225
views
Points within Polygons given certain conditions
I am trying to locate all the points within a set of polygons given a certain condition on the polygon in MongoDB using Python 3x.
This question differs from the other ones because i) it requires ...
2
votes
0
answers
457
views
More stable spatial sort using Shapely's within?
I was trying to use a modified version of the spatial sorting method illustrated in shapely's documentation, using only polygons exteriors (so that I can detect if a polygon lies inside another ...
- 437
1
vote
2
answers
1k
views
Find points within polygon with PostGIS really slow
From some millions of points I am trying to select those points that are within a polygon and save them into a new table. Both datasets with spatial index and both on projected coordinates.
The query ...
- 1,106
2
votes
1
answer
58
views
Taking attribute from multiple points within fixed distance
I have a list of point features each with a unique "ID". I need to run a fixed distance buffer on all 70,000 points to establish which points are within a fixed distance of each other than return the ...
- 381
8
votes
4
answers
799
views
Labeling lines that are not within polygons using field calculator [duplicate]
I have two features. One line feature and another polygon feature. I want the line feature label not to appear when it is within a polygon similar to the one in the figure. That is, I want the label ...
- 183
1
vote
1
answer
139
views
ST_Within with wrong results [closed]
I have a set of points and a polygon and want to select the points that are within the area. Both layers are in the same projection (WGS84 - EPSG: 4326) and are valid.
To determine which points are ...
- 11
1
vote
0
answers
90
views
What could cause a Spatial Join (Completely Within) to return false positives?
Im using ArcMap 10.3
I have a large feature class of Archaeological surveys that I need to Spatial Join to a target feature class of buffered work locations to find locations that are Completely ...
- 118
0
votes
0
answers
87
views
Locating observations that lies within a collection of Polygons (Python)
I'm trying to locate the observations that lie within a collection of Polygons but my current implementation takes forever, and I suspect that it is because the 'within' method needs to check all ...
1
vote
1
answer
456
views
What algorithm is used by the $geowithin operator of Mongodb
MongoDB can perform geospatial query such as finding restaurants inside region with the operator $geowithin. For example:
db.places.find(
{
loc: {
$geoWithin: {
$geometry: {
...
- 13
0
votes
1
answer
1k
views
MSSQL performance with Geography (point within polygon)
I have a query, below, that works - however its very slow, looping through roughly 24,000 points per second. This is a rather high end production DB server with MSSQL and SDE, and in other instances a ...
- 240
0
votes
1
answer
225
views
Polyline length within corresponding polygon
ArcGIS Pro 2.3: I have a feature class of polylines and for each polyline I want to analyze against its corresponding polygon. The link is the FLIGHTID field and it is a 1-to-1 relationship. I am ...
- 427
0
votes
1
answer
503
views
With Spatialite, how do I run PtDistWithin with meters?
So the problem is that I have a set of multipolygons and points and I need to be able to query the data with a given point to check which ones are within 'x' km.
Initially my SRID was 4283 but I ...
- 121
2
votes
1
answer
743
views
How to select features which overlap one geometry but are disjoint from another?
Given a point layer and a polygon layer (P1) in GeoServer, the following CQL Filter selects points which intersect the polygon P1:
CQL_FILTER = "Within(geom,POLYGON((P1_coordinates)))";
The ...
- 20.5k
0
votes
0
answers
323
views
geopandas geometry.within problem ValueError: Geometry column cannot contain mutiple geometry types
I'm trying to do an overlap of some lines with polygons with geopandas.
For a reason I don't understand, gpd.overlay(grid, hel, how='intersection') is not made for lines and polygons, so I'm trying ...
- 1,033
5
votes
1
answer
2k
views
r - sf::st_within output is sparse geometry binary predicament format. How to convert to character or logical vector
The same question is asked here:
https://stackoverflow.com/questions/49294933/r-convert-output-from-sfst-within-to-vector
but I thought this might be a more suitable place for GIS related questions.
...
- 500
1
vote
1
answer
2k
views
geopandas + shapely. Point within a shape
I am using geopandas to import a shapefile and then check if a point is within that shape. I am using the shapefile found in http://opendata.atlantaregional.com/datasets/cities-georgia?geometry=-87....
- 113
1
vote
2
answers
650
views
Counting number of points differing in specific attribute within polygon in ArcGIS Desktop?
I have a grid of polygons and a shapefile with several types of points (POIs). Now I would like to count the number of POI classes lying within each polygon?
With spatial join I only managed to get ...
- 43
0
votes
1
answer
151
views
Identifying multiple polygon features that contain point features and adding attributes to table in ArcGIS Desktop?
I have a point layer and a polygon layer, both containing hundreds of records. Each point feature can be within multiple polygon features (max. 4), and each polygon feature can contain multiple point ...
- 133
-1
votes
2
answers
2k
views
Determining if polygon falls within another polygon using QGIS?
How can I determine if a certain polygon falls within another separate polygon using QGIS?
- 619
1
vote
2
answers
1k
views
Count the length of all polylines from one shapefile within the segments of polygon of another shapefile
I have polylines with counted lengths. And i have the polygon shapefile (fishnet). I want to calculate the sum af lengh of polylines and amount of lines that are within the border of each segment of ...
2
votes
1
answer
2k
views
Searching for a point within a multipolygon
I'm performing a mySQL query to check if a point is within a multipolygon field. I've got a database field storing a multipolygon and I want to check if a point is within any of those polygons. ...
2
votes
0
answers
240
views
How to find shortest line from a point on a polygon boundary to a multilinestring, but the line is inside polygon (PostGIS)
I have 3 geometries
1 polygon
1 point on boundary
1 multilinestring
In this image you can see the problem. I need to find shortest line from point (green square) to line (red), but the line must be ...
1
vote
1
answer
1k
views
Select all points that fall within any polygon from multiple layers
I'm using MapInfo and would like to achieve the following:
Find out all the points that fall within any of the polygons on screen, and which polygons they are contained within.
The data I am working ...
- 319
2
votes
1
answer
7k
views
Getting intersection of circles using shapely?
I have a List of Points which I transform to circles. Code from here
circles = [Point(random.random(), random.random()).buffer(random.random() * 0.1) for i in range(3)]
I want to know which circles ...
- 3,017
0
votes
1
answer
36
views
Documentation on spatial queries [duplicate]
Is there any documentation / definition of the operations within, crosses, intersects etc that can be found on the spatial query just like ArcGIS provide?
3
votes
2
answers
1k
views
Optimisation of MySQL JOIN based on a Within match
I have a table of points and boundaries, and am trying to add the boundary ID which a point is within. However, using a LEFT JOIN ON Within(location, boundary) it is taking about 3.5 hours match 450,...
- 165
35
votes
3
answers
20k
views
Refering to another layer with Field Calculator in QGIS
Is there a way to select an attribute from a polygon layer and insert the value into a Virtual field of a point layer using "within" in the Field Calculator?
CASE
WHEN within($geometry, ...
- 1,866
3
votes
1
answer
472
views
Using arcpy to find geometry within another feature
In Arcpy, I would like to start with a point and then using its geometry method to find out if it is inside my polygon feature (Urban Areas) deeper than the buffer distance.
This is a follow up to ...
- 237
2
votes
1
answer
1k
views
Invalid join selectivity error in postgis 2.1.3
I have 2 tables, one for points and one for polygons. I want to find points falling within theese polygons, so I quered:
select p.id, l.id
from points p inner join polys l on st_contains(l.geom, p....
- 21
3
votes
1
answer
340
views
Finding point within box using MongoDB?
Suppose the point has coordinates for a search within the box:
(long:-155, lat:19)
If we have the box: SW - (-170, 10), NE (29,69) that everything is fine and we can find this point because it's ...
- 131
4
votes
1
answer
5k
views
WFS filter for point in polygon (PIP) query
I am trying to construct a WFS request. I want to determine if a certain point is within a polygon. The point coordinates I want to send via the WFS request. The polygon is saved as a layer on my ...
- 7,624