Questions tagged [filter]

To show, hide, extract, or remove particular data from a larger set, narrowing it down, or the specific criteria used to do so.

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15 views

Extracting city information only from OpenStreetMap

I need to extract City as well as hierarchy of admin entities for selected countries. My understanding for now is that I'll have to get node primarily and find a clever filtering based on tags. And ...
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13 views

Integration: Tell Portal web map to filter a layer via a script in a separate system

I have a work order management system (Maximo 7.6.1.1). In Maximo, I can execute JavaScript and Jython scripts. Scenario: A user has two tabs open in their internet browser: Maximo in one tab And ...
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1answer
38 views

Filter layer by pasting in WHERE clause?

I have a web map in Portal that has the Web AppBuilder Filter widget. The map has a point layer in it called Work Orders. I would like to filter the work orders by pasting in a WHERE clause. The ...
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46 views

How to create a filter expression from selection QGIS 3.6.3

I need to create a filter expression to filter only the selected polygons in a layer. Yes I know I can save the selected elements to a new layer but this solution is not suitable for me. I managed to ...
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1answer
37 views

Add more than one layer of GeoJSON data to Leaflet?

This is my code for loading one layer of .geojson data to Leaflet. The data is basically in the form of markers and it's demonstrating different location in Saudi Arabia. It's saved as "saudi_location....
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2answers
51 views

Loading .json files into Leaflet and filtering them [closed]

I am new to web development and Leaflet/GIS in general. I have a couple of shapefles, let's say they are roads.shp and utilities.shp. And let's say I have the means to convert these shape files into ....
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0answers
34 views

Filtering value layer according to condition of other layer using QGIS?

I have 2 point layer: layer A have 500 point; layer B have 50 point and these point have coordinate duplicate with some point in layer A. I want to find these 50 point out of the 500 points in layer ...
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1answer
27 views

GeoServer different styles for one layer?

In GeoServer I have a layer created from a database table with the following structure: tableX ( id,name,typeid,description,geom ) The geom field is always a polygon. I also have created 3 ...
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27 views

Can QGIS load filtered layers on open from geopackage file?

I have some external processing (FME from SAFE software) which generates a geopackage file with a set of tables. Is it possible to load a set of filtered tables from a geopackage file when opening ...
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17 views

Accessing subattributes in WFS with FE?

I have a WFS server that I need to filter information out of with filter encoding. If the attributes are on the surface, I don't have any problems getting their information. But I don't know how to ...
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1answer
20 views

How to keep the image of a collection that are integrally contained in a geometry boundary in Google Earth Engine?

I have an image collection and a geometry ROI var ROI = ee.Geometry.Rectangle(-78.20688664502586, 34.67650023609108, -77.65207707471336, 35.216816430066366); var l5 = ee.ImageCollection("LANDSAT/...
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2answers
57 views

Filtering out data points on water or outside specified polygons using QGIS?

How do I filter out points that lie in the water or outside specified polygons? For example I want to filter out the erroneous points in the oceans in one project, and filter out all points not in ...
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0answers
60 views

Applying filter on the geometry for a given feature?

I have multiple layers, with multiple features, where I am interested in extracting information from a given feature within a rectangle. I am able to achieve this using the following filter, ...
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1answer
23 views

Specifying join on multiple datasets in a WFS URL request (CQL/Filter)?

I’m using a WFS and trying to join two/three datasets together in a URL query. Two of the datasets are linked via an aspatial table in the middle like so: | Table 1 | | Table 2 | ...
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25 views

Use custom SQL-functions within a WFS stored query (filter)

I want to set up a WFS (GeoServer) returning features which are matching a (given) term / name in a phonetic way by using a stored Query. I've got a SQL function which can be used as an operator for ...
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23 views

Filtering the number of pictures per month of a time series in Google Earth Engine

I'm calculating the NDVI of a time series (1 year) of Sentinel-2, but I only want two images per month to calculate that instead of the whole collection of images with less than 75% cloud. //NDVI ...
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30 views

Local minima filter does not extend to the edges

Trying to run a local minimum filter on a DEM using scipy.ndimage.minimum_filter. I can successfully create the minimum filter output, but it does not extend to the edges of the DEM (see image below). ...
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1answer
42 views

Combining two conditions in one filter expression

I have a Shapefile that shows local municipalities and ward boundaries for South Africa. I would like to filter this layer to only show the wards I am interested in. For example, my first query finds ...
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1answer
44 views

QGIS Does Not Contain Filter

In QGIS 3.4, how do you perform a does not contain filter? I know how to perform a contains filter, with the LIKE / ILIKE operators, but how do you perform a does not contain filter?
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1answer
35 views

XML Filter Expression for WFS download using Interoperability Connection Extension in ArcGIS Desktop

I need to download features from this WFS but there are too many features for the server to handle my request. So I thought I should filter my request using the XML Filter Expression Editor. However I ...
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0answers
29 views

Filter Features depending on User with GeoServer

I now use viewparams to filter the features by using sql views in GeoServer which is connected to our postgis-db. This means the parameter comes from the request url. I want to use keycloak for ...
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1answer
31 views

Update image geometry from another geometry (GEE)

I have a set of images I have processed. Unfortunately, the geometry of the image processed do not always fit the image data. Problem: Let's assume I have an imageCollection. Then, when I would like ...
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1answer
29 views

subset FeatureCollection by position - Google Earth Engine

I have a FeatureCollection such as: // Make a list of Features. var features = [ ee.Feature(ee.Geometry.Rectangle(30.01, 59.80, 30.59, 60.15), {name: 'Voronoi'}), ee.Feature(ee.Geometry.Point(-73....
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0answers
103 views

Mapbox GL filter features by ID? No unique Ids?

I am getting the the OSM Buildings (mapbox://mapbox.mapbox-streets-v8) via mapbox style. I want to hide some building within a BBox. Getting the corresponding features: var features = this.map....
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2answers
30 views

How to create a sub dataframe from a dataframe using specific columns

I have a dataframe that has more fields/columns than I want, so I am trying to create a sub dataframe that only has certain fields/columns. The following throws a TypeError: '(['uniqueid'], ['...
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0answers
57 views

QGIS 3.4.8 Filter Expression for OSM values

I'm trying to complete the seemingly basic task of a filter select for a layer of OSM data pulled from https://download.openstreetmap.fr/extracts/africa/. It's an .osm.pbf which I added to my project ...
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1answer
40 views

Filtering fields from a PostgresSQL/PostGIS database layer in QGIS by Query builder

I incurring in an error while trying to make the following filter of fields in the layer properties Query builder in QGIS 3 from a PostGIS database. select "field_A", "field_B2", "field_D" from ...
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1answer
117 views

OGR SetAttributeFilter with multiple fields?

I am trying to open a layer using OGR in Python and filter the features using SetAttributeFilter() where two fields are greater than zero. from osgeo import ogr driver = ogr.GetDriverByName('ESRI ...
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2answers
120 views

Filtering above ground LiDAR points using a catalog in lidR?

I am analyzing LiDAR data collected two separate years- 2007 and 2015. My analysis is centered around changes in vegetation during this time period. The ultimate goal is to thin the data from the 2015 ...
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1answer
62 views

GeoJSON layer shows/enables only one row in attribute table in QGIS

I have a GeoJSON polygon layer which I converted from a shapefile layer. The layer opens up in geojson.io, for example, with no problem, displays the table correctly, etc: However, in QGIS the ...
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0answers
15 views

Filtering by area/size on via WFS on GeoServer with OpenLayers [duplicate]

I'm trying to add a filter for area/size of polygons into our OpenLayers v4 implementation which gets polygons from our GeoServer via WFS v2, I've seen the example on GeoServer with area and ...
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1answer
30 views

How to apply smoothing filter only to way bigger than specified number of nodes, length, area?

I am try to smooth data obtained by vectorization of a raster image by applying a series of filters in GRASS GIS. Once of steps involves using the Douglas-Peucker filter. However, I need to apply it ...
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2answers
116 views

Equal values attribute table

I don't know how to filter the attribute table in qgis. I have 2 columns, DN and DN_1, both with values from Corine Land Cover (111,112, 223, etc). I try to select the rows that have the same value. ...
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1answer
41 views

Does lasfilterdecimate work when homogenizing by pulse?

In R lidR package, when I run lasfilterdecimate with the homogenize option excluding use_pulse = TRUE it works, but when I include use_pulse = TRUE, it does not work. For example, the code below ...
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1answer
126 views

Running script with Sentinel 2 images?

How can run this script with Sentinel 2 images? // Use a DateSlider to create annual composites of this collection. var collection = ee.ImageCollection('LANDSAT/LC08/C01/T1'); // Use the start of the ...
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0answers
46 views

Filtering points in cloud to find representative set

I have multiple sets of points that represent 'instances' of GPS traces. When ordered and connected, I have a line that represents each trace. I'm trying to find the most average line through this ...
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1answer
212 views

Filter vector layer by searching through complete attribute table - limitations and improvements

In a case were I have a shapefile with a lot of attributes (predominantly text), also I don't have any information about the structure and I don't have any idea in which attribute I have to search/...
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1answer
86 views

Showing only one feature per Report page in QGIS 3

The gift of Reports in QGIS is a massive step in the right direction. I have set up a department template for my team to use and it looks great! Right now, I am attempting to setup a report that will ...
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0answers
38 views

Unexpected behaviour using Filter in QGIS 3.2

I have encountered an unexpected difference in how the Filter function works in QGIS 3.2 to previous versions (2.14 for example). I used the Filter function to select a set of features based on a ...
1
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1answer
52 views

Using delimited text layer to keep only those polygons and records of a shapefile which match a column in the delimited text layer?

What I want to do is trim the shapefile so that only those records and associated shapes that match the same values in a column in the delimited text layer (which in my case is a CSV) are kept in a ...
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0answers
38 views

Channel network polyline shapefile filter [closed]

I need to filter the red polyline shapefile keeping only the real channel network without the little features (noise). I use ArcGIS
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0answers
25 views

ArcMap filtering with messy data

I am working with a DEM that has a bit more data than I actually need. Specifically, even the lowest resolution version is 100ft and I'm trying to reduce it down to 500ft or even 1000ft intervals. I ...
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0answers
42 views

Webmaps including data filtering options for viewers

With QGISCloud, is it possible integrate data filter options for the mapviewers on the webmaps? To explain, I am generating webmaps of clients for sales teams, but I want people accessing the webmaps ...
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0answers
32 views

Number of Frost-Free Months in Google Earth Engine (from TerraClim dataset)

I want a map that shows me the number of months per year that temperatures do not drop below freezing (0°C), or frost-free months. I think the code below accomplishes this... does it? I am sure that ...
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0answers
39 views

Using Mapbox, I have a filter input. As i type I would like the points to filter by words in the input

Below I have a code that basically filters as I move along the view which is good. However I would like to also include a portion within here that would make points disappear as I type in my search ...
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3answers
1k views

Filtering interactive leaflet-map with dropdown-menu?

I try to set up a filterable "shot chart" like http://graphics.latimes.com/kobe-every-shot-ever/ with leaflet. I've a geojson file thats stores all the shots data, I've them showing up in a layer. ...
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1answer
58 views

PDAL Filter output is same as input file

I've applied SOR filter using PDAL python.Below is the code snippet of the same, json = """ { "pipeline":[ "D:/Lidar_collect_3/output/output_1.las", { "type":"filters....
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77 views

Filtering the atribute table on the atlas page so it only shows atributes of objects related to the featured object

I have been trying to make an atlas of cadasters, using different themes and rule-based symbolology, but one thing doesn't seem to work. On each atlas-page I want to put a table showing the ...
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1answer
151 views

Earth Engine: nearly identical Sentinel 2 images for same date, same place?

I am using Earth Engine to retrieve Sentinel 2 data. I thought that for a given date and place, I would find only one Sentinel image (revisit time is multiple days). I notice however that for some ...
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1answer
186 views

Select Features outside of polygon or reverse .filterBounds Google Earth Engine

Is there an easy way of selecting only those features not contained inside a certain polygon, let´s call it aoi? FeatureCollection.filterBounds(aoi) retrieves every Feature inside aoi?