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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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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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
15 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
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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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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
25 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
46 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
38 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
51 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
90 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
46 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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25 views

Animation with time + category interactive filter not working in CARTO VL

I am new to this CARTO VL tool and I am currently facing an issue that I can't fix by reading your Git repos or online help. I have prepared two separate visualizations (one of them has a filter by ...
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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
28 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
108 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
40 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
60 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
39 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
181 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
79 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
36 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 ...
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1answer
34 views

In QGIS, how can I use a 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
33 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
23 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
38 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
23 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
25 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
697 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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0answers
31 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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0answers
56 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
103 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
109 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?
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1answer
45 views

QGIS 2.18: Filter line-layer by QgsExpression

I have a line layer on which I want to run a filter within a python script. I am trying to achieve this via QgsExpression and QgsFeatureRequest. Below you see the same filter that I want to apply in ...
3
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1answer
80 views

QGIS Atlas generation - 2 panels with different sections both Atlas generated

I have a polyline that I split in 5000 m sections and I made it to generate an Atlas for the first step, but since the sections that I want to show are long and not wide I would like to add sections, ...
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1answer
38 views

Google Earth Engine Filter seasons independent from year

Is something like this possible? and how ? Image.Collection.filterDate('20xx-04-01','20xx-09-31')
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2answers
75 views

Using Google Earth Engine to exclude upper 1% of data?

I would like to exclude the upper 1% of my Data ('VV' Band) because of noise reduction var s1_data = ee.ImageCollection('COPERNICUS/S1_GRD') var s1_grd_iw_vv_des = s1_data .filterDate(begin,end) ...
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0answers
111 views

How can I generate a series of maps from time series data in QGIS3?

I've got a polygon layer containing some time series data in cells and I'm trying to create a series of maps from it. Data structure: every polygon has a timestamp and a value that I'm displaying on ...
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0answers
80 views

QGIS Rule-Based Labeling - Toggle child rules visibilty

So it works to add labels by dragging it to another label, like it does in styles. But if I try to hide this upper filter, the contained labels won't hide. Is this a bug, or is it not wanted, to set ...
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1answer
134 views

Filtering (lasfilter on) huge LiDAR dataset

My dataset is about 8.3 GB after loaded into R environment by using lidR package. Some points which have return number greater than number of returns need to be removed. With a small dataset, I ...
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1answer
29 views

Google Earth Engine: Extract rule based values from List and Array

I'm wondering how to extract values from a ee.List and ee.Array that meet a certain criteria in the Google Earth engine environment. var array1 = ee.Array([1,1,2,2,3,3,4,4]) var list1 = ee.List([1,1,...
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1answer
51 views

Leaflet bind popup + filter

I have problems with the code, I do not know where to place the part with the popup. This does not work if I want to use the data attribute in the popup window: var okruh1= L.geoJSON(trate, { ...
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2answers
141 views

Use Image in calculation if a certain property is given

The goal is to select certain images from an image collection of Landsat 5 raw scenes, which possess a property called RADIANCE_MAXIMUM_BAND_6, since not all images contain this property. if (...
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1answer
130 views

How to filter a feature collection to only features ENTIRELY inside another feature

I have 2 feature collections. One of the "departamentos" of Argentina, and another of the "provincias". These are internal political boundaries. The "departamentos" each belong to only one "...
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1answer
259 views

How to filter through geometry of feature collection instead of properties?

I have a FeatureCollection I made from a Polygon shapefile. I have fixed the geometries in qgis and should only be made out of many single polygons. But for some reasons some of my features are ...
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1answer
50 views

How to filter style to display only where data in one column in the attribute table is not the same as the data in another column

I have a .shp with attribute data containing current zone, current code, proposed zone, proposed code, final zone, final code etc. I want to duplicate this layer and style it to display a black ...
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1answer
47 views

Create new vector of polygons that are within 500m of a point in vector of points P

If I have a vector of polygons A (say 200) and want to create a new vector (say 120) of the original 200 polygons that are with 500m of a vector of points P (say 50), this is the method I do. I want ...
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0answers
219 views

AGOL Web AppBuilder - Group Filter Widget with multiple layers

I am creating a Dashboard web application for displaying utility projects using the AGOL Web AppBuilder interface. I would like to set up a Group Filter widget to filter based on a common attribute ...
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1answer
37 views

Shapefiles - ability to toggle editing and filtering

I have a shapefile from a county HER which I have successfully loaded. I have catagorised the point so depending on type they show a different symbol. I can filter those points in order to show ...
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1answer
68 views

Filtering the atlas coverage layer by a different layer in QGIS

I need to create one map atlas for each municipal administration filtering the coverage layer (red rectangles = map sheets) by municipal administrations boundaries layer (green polygons). How is it ...
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1answer
54 views

Exclude specific GeoJSON data by polygon [closed]

Given geospatial data as GeoJSON, how can I filter this data to exclude geometries within a specified polygon? I need this to work in JavaScript. Example: function filter(featureCollection, ...