Questions tagged [within]
The within tag has no usage guidance.
32
questions
1
vote
0answers
24 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 ...
0
votes
0answers
25 views
Spatial Join in QGIS and update column
I have a layer of lines and another layer of polygons. I would like to update the lines with the unique reference of the polygon they are within.
I am able to complete the spatial process of ...
1
vote
2answers
124 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 ...
2
votes
1answer
43 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 ...
8
votes
4answers
626 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 ...
1
vote
1answer
74 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 ...
1
vote
0answers
42 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 ...
0
votes
0answers
54 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
1answer
200 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: {
...
0
votes
1answer
332 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 ...
0
votes
1answer
116 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 ...
0
votes
1answer
153 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 ...
1
vote
1answer
310 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 ...
0
votes
0answers
208 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 ...
3
votes
1answer
616 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.
...
0
votes
1answer
1k 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....
1
vote
2answers
301 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 ...
0
votes
1answer
92 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 ...
-1
votes
2answers
627 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?
1
vote
1answer
594 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
1answer
1k 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
0answers
171 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
1answer
770 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 ...
2
votes
1answer
4k 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 ...
0
votes
1answer
32 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
2answers
731 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,...
26
votes
3answers
11k views
How to refer to another layer in the field calculator?
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, ...
3
votes
1answer
379 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 ...
2
votes
1answer
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....
2
votes
1answer
264 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 ...
3
votes
1answer
4k 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 ...
4
votes
2answers
483 views
Alternative to Spatial Query on large data
I have around 110000 points data spread around the world. the shapefile size is 116 Mb. I want to select points which are inside asia.
I have been using qgis but this time qgis is not being able to ...
