Questions tagged [select-by-location]
Select features based on their geographic position relative to features in another layer
315
questions
2
votes
1answer
86 views
Retrieving lines radiating from point with v.select in GRASS GIS 7.6
I am attempting to select lines that radiate from a point using v.select in GRASS GIS 7.6 (also tested with 7.4.4) in Windows 10.
I start out with 48 lines radiating from a point every 7.5 degrees. ...
0
votes
0answers
22 views
Selecting grid squares (polygons) that intersect with a raster
I have a raster dataset that I have exported a subset from using attribute values (so the extract has areas where there are no pixels). I also have a fishnet grid (polygons) and I want to select the ...
1
vote
1answer
81 views
Select by location inside a for loop in Python Terminal at QGis 2.18.17
I have two shapefiles (drenagem and rio_pri). I need to loop through every feature from rio_pri and save all those features from drenagem that intersect rio_pri. So I wrote the following code to be ...
1
vote
0answers
26 views
Classifying coordinates on land/on water using QGIS very slow processing issue
I'm very new to QGIS. I have a problem related to the "select by location" tool of QGIS.
I have loaded 10 different layers into my map containing data of waters (rivers, canals etc.). Now, I want to ...
1
vote
1answer
29 views
Selecting polygons over raster extent using QGIS?
I would like to select all the polygons that are within my raster extent.
Is there a tool in QGIS to do it ?
Such as the select by location tool but instead of comparing the features from another ...
1
vote
1answer
34 views
Getting rid of warning messages when selecting by location using PyQGIS?
I am running a Python script in QGIS 2.18.26 and I have a select by location with a code like that:
indir = "C:/Infolder/"
outdir = "C:/Outfolder/"
os.chdir(indir)
for fname in glob.glob("*....
1
vote
1answer
38 views
Saving only selected features after doing a selection by location in QGIS using Python Terminal?
I wrote the following script to save only the selected features after have a selection by location done. But I have got an error when the saving line is executed. I don't want to load these layers in ...
0
votes
1answer
43 views
UpdateCursor with SelectByLocation for multi polygon
At the end of this script, I have an UpdateCursor that updates the PLOTS field in the Timber_Type_Polygon with the amount of plots that are within the Timber_Type_Polygon. There's 3 polygons within ...
0
votes
1answer
21 views
Invalid Input Data on arcpy.SelectByLocation_management
I keep getting this error
Traceback (most recent call last):
File "\\drafting9\Drafting9\ShanePrice\Scripts\Python\Scripts\Cruise_Plan\Cruise_Plan_Model_Final_SP.py", line 77, in <module>
...
0
votes
0answers
26 views
Selecting only polygons with certain variable in them using ArcMap?
I have green space polygons for London and also illegal pollution areas in polygons in ArcMap. How would I go about selecting only the green space polygons that have pollution areas in them (so the ...
0
votes
1answer
36 views
Trying to use layer saved as .lyr file with arcpy.mapping.Layer function results in error?
I am fairly new to the ArcGIS development world. I am attempting to write a script that will have an end result of selecting features by proximity to a selected portion of a different feature.
So far, ...
3
votes
1answer
168 views
Differentiate between line ending within polygon and line passing all the way through polygon - QGIS
I have a line file and a polygon file in QGIS.
Primarily I am looking for any polygon that has a line intersecting it - easy, sorted.
From these intersects, I then want to pull out just the polygons ...
1
vote
0answers
49 views
Selecting by location: Line to Line
I am trying to select line features from an OSM road shapefile layer (Layer 1) based on the features of a line layer (Layer 2). Layer 2 is selected road segments from Layer 1 produced using a routing ...
8
votes
0answers
143 views
When using QGIS join by location, how does QGIS determine the first located feature option?
I have used QGIS process 'join attributes by location' in one of the models I have built and I have now been asked to explain in detail exactly how the model is determining the results.
I am using it ...
0
votes
1answer
14 views
Selecting polygons from file 1 based on their location within file 2 using ArcMap?
I'm working on a project right now where I want to find the census tracts within a particular traffic analysis district. I may just be blanking on it, but I'm working with two files. The first has ...
2
votes
0answers
68 views
Method in QGIS to do a select by radius but ignore “islands”
I am looking for a process in QGIS to run a selection from a given point based of a radius that ignores "islands". For example you may have a body of water which acts as a natural barrier past which I ...
3
votes
1answer
40 views
For a specific point in space, get the pixel in which that point lies (in R)
I am a bit new to the spatial packages of R. I have a hdf file from which I can get a data.frame with the latitude and longitude of the corners of the pixels, and the latitude and longitude of the ...
0
votes
0answers
51 views
Using output layer names from Select By Location
This is kind of from memory as I cannot access my specific code… I am using 10.3.1 and this will be run inside ArcMap.
Overall goal: Find which layers in my active dataframe intersect a specific ...
0
votes
1answer
28 views
How to efficiently reference/connect data without overlap
I am doing an analysis that places a buffer around X property, then identifies all the parcels within that buffer to store in a database and perform analysis on later.
Currently, I have two separate ...
1
vote
1answer
57 views
Select by Location (Between two layers) - ArcObjects C#
I have two Point Feature Classes - Say FC1 and FC2 - added in the current map
I want to Select Features from FC1 that intersect with Features of FC2
This can be easily done with ArcMap's Select By ...
2
votes
1answer
61 views
Trouble with Select by Location
I'm having trouble selecting individual the corresponding polygon in my parcel data based on the location of a property. It seems obvious, but what am I missing?
I have a list of geocoded properties ...
1
vote
1answer
36 views
Earth Engine Cascading selects - redraw/highlight on select
I am trying to create a scenario in Earth Engine where a user has three drop down selects. On each select, the next select will be filtered by spatial intersections of the first select, and the third ...
3
votes
1answer
202 views
How to run QGIS algorithms with selected features?
In the QGIS GUI, the select-by-location algorithm has a choice to only use the selected features from the INTERSECT layer. How can I do this (or use any other algorithm) in a python script for QGIS 3? ...
0
votes
2answers
41 views
Identifying which lines cross building polygons using ArcMap?
I have the following lines generated from coordinates with XY to Line. I would like to select and delete the lines which cross and are contained within the buildings. I need to do this to find the ...
0
votes
1answer
42 views
Getting points inside selected feature in ArcGIS Desktop?
I have incorporated district map of India and excel table contents(which consist latitude, longitude and fire data)using add data feature in ArcGIS Desktop.
I have attached the picture below to show ...
1
vote
1answer
102 views
Using Field Value as Search Distance Parameter in Select by Location in ArcPy? [closed]
I've been trying to use the select layer by location tool in a loop to select features that are within a specific distance to one feature class for each feature in a different feature class (each ...
2
votes
1answer
109 views
Rule based styling with select-by-intersection syntax
I want to do rule based styling for a selection of gridded polygons dependent on their position relating to another layer. I want to show the polygon that a point feature based in an atlas falls ...
2
votes
2answers
139 views
Calculating point layer values within polygon features in QGIS 2
There are two layers
polygon BereichBerechnung with a field "Are_Number"
points EW2017 with a field "EWjeAdr"
In QGIS with a Virtual Layer, I want to calculate the sum of the field "EWjeAdr" for ...
0
votes
2answers
73 views
Automating Select by location using ArcPy and where_clause?
I have used the code in Coding python loop to select features of polygon layer than are completely contained in group of 11 layers using ArcPy? to automate select by location analysis using ArcPy.
I ...
2
votes
1answer
116 views
Select layer by location in PostgreSQL
I have a footprint of some buildings (see the picture).
The selected buildings have an area below 30 sqm.
As you can in the picture see some buildings share almost borders with a building bigger ...
3
votes
4answers
178 views
Selecting features with same geometry in one shapefile
@TeddyTedTed's answer is nice, however, I am looking for something more
efficient.
I am working on a public transport network in one shapefile (polyline type) in QGIS 2.18.
Certain bus routes ...
1
vote
1answer
35 views
Selecting points not on end of line
I have a data set of points from which I'm trying to make a selection of the points whose location is between two line segments. What would the way to do it?
Here's a picture to illustrate what I'm ...
2
votes
0answers
35 views
How do I select rows in an attribute table of a vector layer grid which are outside of another vector layer?
So what I am working on is accessibility analysis, I want to know how many percent of the population of a country have access to certain health services within a given driving time. For example is it ...
2
votes
1answer
38 views
Combining information of two layers in one
I'm working on population data by catchment area in Albania.
I'd like to know how many people are living inside one precise catchment area and in every catchment area.
For example in the first ...
0
votes
1answer
93 views
ArcMap 10.6 Select Layer by Location ERROR 000732: Selecting Features: Dataset does not exist or is not supported
I'm trying to calculate the accumulative street length in various jurisdictions in a county. To do this I'm using a search cursor in the city layer and then using the current feature to select streets ...
1
vote
1answer
44 views
Sorting by row already pre-selected polygons by location by line? [duplicate]
I have two layers. One with small Polygons and one with a line. I want to select all Polygons which intersect with the line. Additionally the selected Polygons should be sorted by the order of the ...
2
votes
3answers
58 views
Select Random Point Based on Proximity of Other Points [closed]
I want to randomly select 50 points from a point layer of 3,000, but no two points can be within 100 miles of each other. Having difficulty moving beyond a theoretical framework into something ...
0
votes
1answer
102 views
Selecting only portion of shapefile using ArcMap?
I have two layers: One of the Misissippi River Basin and one of the USA counties within the 48 states.
I'm having no trouble selecting the counties within the Basin, but I also need to select the ...
1
vote
1answer
315 views
Random selection of points in SpatialPointsDataFrame R object with distance constraint
I need to select points randomly (without replacement) from a SpatialPointsDataFrame (input object) in R with a minimum distance of 3,000 meters between them. I want to get random 50% of all points. I ...
1
vote
2answers
141 views
Polygons not containing other polygons
I have two large polygon data-sets, one highlights the building footprints and one indicating parcel outlines. I want to find all parcels without a building on them. Essentially all parcel A's which ...
1
vote
1answer
67 views
Using SelectLayerByLocation and GetCount to Populate a new Field using Python
I'm attempting to create a script which assesses the intersect between a layer "BldgFootprints" and several polygons "FireBoxMap_1"-"FireBoxMap_44". And from this intersects performs a getCount on a ...
0
votes
2answers
98 views
Select multiple rasters from location
I have a lot of rasters (almost 4000) wich are representing individual glaciers in the Alps. I would like to select only the rasters located within the french border.
As I have no information in the ...
1
vote
0answers
53 views
Use selected feature in MXD as selector in python?
I am quite new to ArcPy. However, I want to write a script that:
uses an existing SELECTED FEATURE of a feature class in a data frame of an existing MXD (on an SDE Server)
for a SELECT BY LOCATION ...
1
vote
1answer
91 views
Comparing geometry between layers using QGIS?
I'm using QGIS 3.2.3. I have:
a shapefile layer of town outlines (about 600 features)
a spatialite layer of points (about 20000 features)
I would like to filter the points layer to show only those ...
3
votes
1answer
136 views
Select Layer By Location gives ERROR 000840 ({select_features} as arcpy.Polygon)
I tried to select SC27060054 point object using polygon.
r"Project\project.DBO.Qo" is a point layer.
import arcpy
p1 = arcpy.Point(254426.380, 4664270.258)
p2 = arcpy.Point(254432.730, 4664270.258)...
3
votes
1answer
100 views
Select features in a polygon that covered the most by features of another polygon layer QGIS
I am working in QGIS. I have 2 polygon layers,
One layer is the parcel polygons layer for a county called "Parcel"
The other layer is the building footprints polygon layer for the same county called "...
2
votes
1answer
642 views
Join attributes of polygons to another polygon feature based on location QGIS
I have two large polygon data-sets. One highlights the building footprints for a county and the other highlights the parcel boundaries for the same county. Some parcel polygon features have multiple ...
1
vote
3answers
233 views
Delete ONLY selected features in ArcMap / ArcPy
I have a layer where features are selected by location in relation to one or more other layers (selection_type is ADD_SELECTION) in a loop.
After that, zero, one, some or all features are selected.
I ...
2
votes
1answer
228 views
Choosing LiDAR tiles with vector data using LAStools?
So the problem is that I have a huge amount of LiDAR tiles (in .laz format), but need only part of them that are within the borders of the city.
When I load all the tiles to LASTools, I have ...
1
vote
0answers
67 views
How to select trenches only upstream of a station (select by location)
I have a shape (line) that represents the hydromorphology of watercourses and contains several parameters. This morphological study of watercourses has been done on every 100 meters of surface ...
