Questions tagged [select]
The selection of data from a database based on some criteria.
519
questions
3
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Selecting points which touch "boundaries" of another polygon using QGIS
I have an quite complicated polygon shapefile and a lot buffers around points (second shapefile).
These small polygons are within and outside of the big polygon. I need to select those polygons which ...
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1
vote
1
answer
18
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Show Selected Records fails to display in ArcMap
I have been using ArcMap for a while and I just started having this issue (maybe because of a new laptop?). When I select items by Attributes the bottom of the table will say 97 out of 2000 selected, ...
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2
votes
1
answer
35
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Providing parameters in a URL to select and zoom to a feature on startup [closed]
I have a Leaflet map with GeoJSON data that shows various properties and I would like to append a parameter like "owner" to a URL (not a coordinate) and have the feature selected and zoomed ...
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0
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15
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How to be sure that a certain polygon is completely covered by all the images inside an Image Collection in GEE? [Solved] [duplicate]
I'm trying to asses size variations of a certain lagoon based on MNDWI values. The final product should be a time series with the lagoon monthly size.
I'm new to EE and JavaScript so I've been "...
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1
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0
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15
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Creating polygons from rasters using color values via a color sampler in QGIS
This seems like a question that should have been asked, but the trick with all this is in knowing how to ask the question. I would like to use the background satellite imagery from GE or Bing or ...
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3
votes
1
answer
95
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QGIS show only selected polygons on the map
I would like to make visible only these polygons, which are selected right now.
I tried to go with this hint:
Displaying only selected features on map in QGIS
but when in my expression I applied:
...
- 3,574
1
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1
answer
36
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MapInfo SQL Query with Metacharacters?
I have +8 million edge in MapInfo. I want to select character+digit but i cant.
I tried querying as [a-z]+[0-9] but failed to use metacharacters in Mapinfo.
"New York 1. Street" is true.
&...
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3
votes
2
answers
71
views
Selecting attributes from multiple vector layers in QGIS
I'm looking for a way to select multiple attributes from about 9-13 vector layers. I downloaded the "Multiple layer selection" plugin, but I get an error.
2022-03-22T14:01:20 WARNING ...
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1
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1
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42
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Create layers of confirmed and unconfirmed alerts using select
I aim to create one layer with confirmed alerts + Date and one layer with confirmed alerts +Date from a dataset in GEE.
The dataset has two bands: 'Alert' and 'Date'.
Confirmed alerts are 2, while ...
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0
votes
1
answer
79
views
Use value from select to set corresponding marker icons in Leaflet
I have a select that contains a list of cities my markers are in. I would like to display my L.icon markers according to the value currently selected, since the value selected will match the attribute ...
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1
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2
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73
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Selecting random set of points from existing point layer for sampling in QGIS
I have a point layer and I wish to extract a random sample of these points across the dataset based on a given attribute.
For example I would like to select randomly 25 points with attribute "A&...
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2
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1
answer
72
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Changing selection color of features in QGIS 3.20
In QGIS 3.20.1 when I select a feature of any polygon it turns white unlike the older versions that were yellow.
Is it possible to change this selection color using a simple way?
Note: I do not have ...
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3
votes
1
answer
42
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Self-crossing/intersecting polygon in QGIS that tools identifies them as valid
I am using QGIS 3.14 long term version. I need to identify these polygons that are self-crossing.
Here are the tools I have tried
SAGA's "Polygon self-intersect";
check validity from ...
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0
answers
24
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Select lines by what their starting and ending vertices intersect
I have a set of polylines representing storm drains and I want to select every line that is originating from a structure (a catch basin or a manhole) with field DATASOURCE=GPS, AND terminating at a ...
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6
votes
4
answers
119
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Identifying self-crossing/intersecting polygon in QGIS
I need to identify these polygons that are self-crossing.
I tried to run SAGA's "Polygon self-intersect" tool but it didn't work.
update: I tried to use check validity and other similar ...
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4
votes
1
answer
206
views
Proper syntax of expression for selecting rows in QGIS
I have a long shapefile with various columns. I want to select only some rows, based on an expression. The column used for filtering is "binomial". I tried so far:
"binomial" = &...
5
votes
3
answers
300
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QGIS Select points within ONE polygon in a different layer
I have a set of points, which are located in the same area where the other, polygon layer is located.
I would like to have all the points selected, but ONLY within the one polygon belonging to the ...
- 3,574
3
votes
1
answer
67
views
Select values that are the same in another column in another layer
I'm working n QGIS 3.10.7-A Coruña. I have two layers: point.shp (670 features) and line.shp (4500 features). Both of them have a column called "code" with string values. I want to select ...
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6
votes
4
answers
365
views
Removing duplicate features based on a condition on another attribute column in QGIS
I want to remove duplicate features (from a polygons shapefile) based on a condition on another attribute column in QGIS.
For example, if I have the following attribute table of a polygon shapefile:
...
1
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0
answers
35
views
Can' select tools a number of drawings
I am using ArcGIS 10.8 and I want to add some labels at the feature class of points. So, I draw some lines to indicate the label per point. I want to remove some of them, but the Select tools can't ...
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28
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Selecting path between two lines using ArcGIS Pro without creating network dataset
I am using ArcGIS Pro 2.9 without a Network Analyst license so I cannot create a network dataset.
In a feature class of connected lines I would like to be able to select any two of them and find a ...
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137
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How to select or intersect FeatureCollection object with an Image object in GEE
I am working on some coordinates taken on the field (corresponding to the presence of a certain plant in a natural park), and on a code that created a mask, on GEE, initially coming from Sentinel. ...
-1
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2
answers
123
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Extracting certain polygons out of shapefile based on attributes using ArcGIS Pro
I have a polygon shapefile that consists of many land use polygons. I want to create a new shapefile that only includes a few land use polygons from the original shapefile. The original shapefile has ...
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28
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Selecting line between 2 points using ArcMap
I have a point layer representing intersections and a line layer representing roads. The point layer has XY coordinates for each intersection and the line layer has START_XY and END_XY coordinates for ...
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2
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1
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45
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Selecting fields in NNJoin plugin
I want to know if there is the possibility to choose only the desired fields for each layer that will appear in the output layer on the NNJoin plugin. If so, how can I do it?
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49
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Selecting lines between two points using ArcMap
I have two layers: One representing intersections in a city; and the other representing the road network. As shown below, I'd like the ability to select road segments provided two intersections. That ...
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0
answers
23
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Selecting only one feature from layer and making others to disappear in QGIS [duplicate]
I have a map with a series of points representing stores showing up. All these stores are from the same .shp-file and thus on the same layer in QGIS.
What i need to do is be able to select only one of ...
- 29
0
votes
2
answers
62
views
ArcMap Field Calculator to select values >20 on multiple fields
I need a Field Calculator script to select a feature (trees layer), if values from multiple fields, namely the amount of pine, spruce and birch, meet a specific condition:
The values of pine "...
0
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0
answers
34
views
Create new feature class from tuple by changing Object Id
I have feature class with 49 records. OID = [0,...,48]. I created 2 random non-repetitive feature classes containing 9 OIDs.
in_FC = "E:/gis payannameh/TABU search/data/90spring_new.shp"
...
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1
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31
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Removing table on map using ArcMap
I am using ArcMap 10.7 and very often I export data from attribute tables to external Excel files.
Very recently I saw several table layers appearing on my map (figure below) and I guess this was ...
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3
votes
1
answer
56
views
Modifying attributes with map selection using PyQGIS
I am trying to write a basic script or tool that will allow me to select a feature from the map, store those features initial attributes, then click additional features from the map and assign the ...
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0
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76
views
Use random select based on matching values and a field value in QGIS
I have two tables one with zip codes together with addresses (tableA) and another layer with zip codes and values (tableB), this layer for example has zip code = 1234567 and a value of 50, zip code ...
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2
votes
1
answer
90
views
arcpy Layer.setSelectionSet() not working in Python add-in
Using ArcGIS 10.8 (Desktop), I use a few lines of Python to set the selection in a layer called 'HNVKartierung' in a dataframe called 'HNVDaten' to a certain OID in order to then zoom to the selected ...
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5
votes
3
answers
585
views
Selecting the number of nearest points in QGIS
I have loaded a CSV file (includes points with elevation) in QGIS. I want to select exactly 1000 points in a specific area.
My idea is to select one point and then to include all nearest points to him ...
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3
votes
3
answers
136
views
Selecting random points from feature class
I have shapefile that includes 49 points (wells). I want to create 100 networks that include 20 randomly selected points from first network. When I used create random point tool, Some networks were ...
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0
answers
46
views
Selecting one features out of Event Layer is selecting more then one feature
I am using ArcGIS Pro 2.8.2. With the "Make XY Event Layer" I am making a Layer out of a table in our sde.
After creating this layer I want to select one specific feature from it, but then ...
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0
answers
43
views
QGIS/Create-Grid/Calculate-extent-by-layer: Cannot select layers as number of layers exceeds layer-selection-window size and scrolling is not possible
I'm using QGIS 3.16 on Win 10. My project contains say hundreds of raster layers and I'd like to create some vector-grids based on distinct rasterlayers by using the Create-Grid-tool with the ...
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1
answer
51
views
How to select polygons located nearest a line feature in QGIS?
I am running QIGS 3.18. I am trying to select features from a polygon layer that run along a given roadway (which is blue in the photo below). How can I go about running a selection of all the ...
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votes
2
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173
views
Get max value from points based on distinct id, and keep geometry for the new selection
I have a pointfile of approx.. 226000 points, where I need to filter by max value and distinct id_pol.
SELECT distinct (id_pol), MAX(value)
FROM fillspill_pol_value
GROUP BY id_pol;
This ...
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1
vote
1
answer
156
views
"Save error: Creation of layer failed" when saving selection as new layer in QGIS
I have used Select (Features) to select features from a 2nd order administrative boundary layer: refer to image:
I want to save the features to a new layer:
but this is the error message that I ...
4
votes
1
answer
96
views
Precise selection of stacked features within one layer (QGIS)
In QGIS 3.16.8. I have a vector layer consisting of numerous previously merged vector layers.
In some cases I may have 10+ polygons stacked on top of each other; I need to select one polygon or ...
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4
votes
1
answer
180
views
Set default value based on multiple fields in QGIS
I have a layer with a relate table (1-M) with three columns (fk_id, date, comment).
fid
fk_id
date
comment
1
01
2021-02-03
Comment 1
2
02
2021-02-05
Comment 2
3
02
2021-03-02
Comment 3
4
02
2021-...
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17
views
Assigning value to line matching values of lines sharing end vertices using ArcMap
I am using ArcMap 10.7 and have a line shapefile with a field denoting the year a road was built. Unfortunately there are segments of these roads with null values, particularly between lines which ...
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0
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35
views
Selecting line segment based on how it is connected to other line segments using ArcMap
I have a line feature dataset of roads that were build in different years, but do not have construction year as an attribute. I have assigned most roads in the dataset a year based on their distance ...
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2
votes
1
answer
55
views
Selecting features within specified number of attribute groups closest to point using PostGIS
I have a table of subway stops in NYC and what I am trying to do is select the points from the five closest subway stops to a given point. However, each subway 'stop' has multiple points associated ...
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vote
2
answers
97
views
Selecting features from a .shp file based on rasters pixel values
I am on windows 10, using QGIS 3.18.
I have a shapefile with multiple entries (polygons) and a raster with a few pixel values. I would like to use a "select by ... " to select the entries ...
0
votes
1
answer
34
views
Creating feature class capable of on-the-fly feature additions
I am trying to select a subset of roads from a line feature class. The selection is too complicated to use the Select By... option, so I am essentially handpicking several hundred lines to add to a ...
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votes
1
answer
94
views
Selecting certain road length around points in QGIS
I have a dataset with road segments across a country, and their length in km.
I also have the boundaries of each province within the country.
I have calculated the center point of each province.
What ...
- 51
0
votes
1
answer
237
views
Export Selected Features to a new Feature Class NOT VISIBLE ArcGIS Pro 2.7.2
I am exporting selected features from a feature class and creating a new feature class within the project geodatabase. The export runs and the feature class is created but the features are not visible....
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0
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236
views
Creating multiple Choropleth map using Leaflet
I have created a choropleth map including a legend and a div element using a JavaScript object created from GeoJSON layer using the leaflet tutorial. But when I tried to create multiple choropleth ...
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