Geographic Information Systems

Questions tagged [select-by-location]

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Select features based on their geographic position relative to features in another layer

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Using Select by Location in ArcGIS Pro

ArcGIS Pro 2.4.0 (trial version), up to date. Win 10, up to date. I'm new to GIS. I thought my task would be simple as I only have two layers: a shp file with many thousands of census tracts along ...
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1answer
42 views

Find features based on total overlap of another feature class

I have 2 polygon feature class's (A and B) that overlap each other. I want to select all the polygons of feature class A where the total overlapping area of feature class B polygons is less than 10m2 ...
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63 views

Automate saving features by results of join attributes by location

In QGIS v3.8.3 I have one shapefile of all US Census Tracts and another of ~1,000 US Counties. There are multiple tracts in a county. So I did a many-to-one join in Join attributes by location to add ...
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34 views

Spatial join based on by location and by attribute

I have tried to solve my problem using previous similar issues but I didn't find anything. I want to get direction for a shp (shapefile) with routes (polylines) and then to join this information in ...
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20 views

QGIS Channel Network - Merging all polylines

In QGIS I have created a Channel Network using the SAGA Channel Network Tool. I would like to select all the Channels and their upstream network which intersect the blue polygon. Of course the Select ...
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2answers
46 views

Select by location using separate features iteratively (pyqgis)

I am looking for a way to run select by location, specific to the features of the 'INTERSECT' layer. I have got bus locations and bus stops and want to figure out when the bus has entered and left ...
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35 views

Creating automatic sum column in ArcMap

Using ArcGIS 10.3 I have a table with different categories and would like to summarise each of them. I want it to work as well when these data are selected inside a polygon. Below is an example of ...
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29 views

I have polygon contain two lines; I want to select and delete the smallest shape length line

I have polygon contain two lines. I want to select and delete the smallest shape length line. Or clip the largest line length. Can't do it manually so I need a model idea or something.
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1answer
52 views

Select by location tool Vs layer.getFeatures(QgsRectangle(xmin,ymin…)))

I can't make sense of the difference between: QGIS Select by location tool (Vector->Research tools->Select by Location") which gives the correct result :7 records match the extent: Creating a ...
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1answer
24 views

Finding what intersects feature without join in ArcGIS Pro

I am new to ArcGIS Pro. Which Geoprocessing tool do I use to find the Features in FeatureA that intersect FeatureB without prerforming a join? I just want a selection of FeatureA - not clipped to ...
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1answer
39 views

QGIS - Extract by location, what does Cross do?

I don't understand what Cross does when extracting by location, and how it differs from Overlap- the definition on the user guide is very confusing - it says: Cross: Returns 1 (true) if the ...
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1answer
52 views

Iterating through geodatabase and assigning field value based on spatial location using ArcPy

This is very similar to Python script to iterate through geodatabase and assign field value based on spatial location and Assigning field value based on location without join just different data. ...
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1answer
167 views

Spatial subsetting SpatialPolygonsDataFrames completely within selecting area using R

I am trying to spatially subset in R: the forest stand data (many small polygons) by the watershed data (one polygon) My datasets are both in SpatialPolygonDataFrame format. I don't want to ...
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1answer
41 views

Select raster tiles within vector polygons

I have a shapefile with polygons of all the countries of the world. I also have a raster .tiff (250m square pixels) of average wind speed per pixel. I want to select all the tiles which lie within ...
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2answers
58 views

ArcPy Iterative Select by Location

I have a very large dataset with line features that represent a utility, and lines that come off of those utility lines showing connections to buildings. (example shown below - utility line in black ...
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37 views

Selecting features enclosed by another layer using QGIS?

I have 2 layers selected layers as shown in the figure below, hotosm_glp_rpads_lines (Layer 1) and LaSoufriere_Imapact_Zones(Layer 2). I want to select all the polylines in layer 1 which is bounded by ...
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1answer
34 views

Finding location of specific value in spatial TIFF file using R?

I want to find location of specific value in one spatial GIS TIFF file and then compare location to main file in order to find some information. for example consider this image which is my main image. ...
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1answer
28 views

Select or export features within layer that intersect one another, and also within distance in ArcMap

As shown in the image, I would like to select or export features within a layer that intersect one another, and also within a specified distance. I am trying to use the "Select Layer by Location" ...
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28 views

Selecting multiple areas at the same time using the 'select feature by polygon' tool [duplicate]

I was wondering if it was possible to select 3 polygons areas at the same time. So in terms of how I want to use it, I have multiple trails that I want to select within certain plots, so I have drawn ...
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1answer
104 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. ...
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34 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 ...
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2answers
124 views

Select by location using for-loop in Python Terminal

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 ...
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27 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 ...
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1answer
70 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 ...
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1answer
50 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("*....
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1answer
82 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 ...
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1answer
49 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 ...
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1answer
28 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> ...
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28 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 ...
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1answer
102 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, ...
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1answer
234 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 ...
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56 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 ...
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273 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 ...
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1answer
19 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 ...
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72 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 ...
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1answer
48 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 ...
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61 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 ...
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1answer
32 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 ...
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1answer
135 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 ...
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1answer
80 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 ...
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1answer
82 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 ...
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1answer
429 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? ...
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2answers
51 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 ...
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1answer
54 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 ...
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1answer
178 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
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1answer
148 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 ...
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2answers
196 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 ...
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2answers
99 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 ...
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1answer
184 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 ...
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4answers
243 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 ...

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