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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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0answers
31 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 ...
0
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0answers
12 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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0answers
9 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 ...
1
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1answer
27 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 ...
2
votes
1answer
78 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. ...
0
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1answer
31 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 ...
0
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1answer
46 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
34 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 ...
5
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1answer
161 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/...
1
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1answer
67 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 ...
1
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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 ...
1
vote
1answer
31 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 ...
1
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0answers
32 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
0
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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 ...
0
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0answers
34 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 ...
0
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0answers
22 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 ...
0
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0answers
19 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 ...
0
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3answers
400 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
22 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
40 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 ...
1
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1answer
71 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 ...
0
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1answer
60 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?
1
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1answer
35 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
votes
1answer
79 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, ...
2
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1answer
35 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')
4
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2answers
60 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) ...
0
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0answers
93 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 ...
2
votes
0answers
66 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 ...
3
votes
1answer
100 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 ...
0
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1answer
26 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,...
1
vote
1answer
45 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, { ...
0
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2answers
87 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 (...
0
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1answer
57 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 "...
1
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1answer
148 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 ...
1
vote
1answer
44 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 ...
1
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1answer
43 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 ...
2
votes
0answers
174 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 ...
0
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1answer
36 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 ...
1
vote
1answer
65 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 ...
-1
votes
1answer
44 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, ...
0
votes
1answer
525 views

Clustering point data in QGIS?

Working in QGIS 3.4.1 Madeira I have a layer with many data points, for visual purposes I wish to remove some of the overlaying points. Is there a simple way to perform some sort of clustering/...
1
vote
1answer
104 views

Filter a date interval (month) shapefile

I'm trying to filter some data of a shapefile (with "Filter") for QGIS to show points in a date interval of a shapefile. I have a shapefile which has a table of attributes of sightings of animals with ...
1
vote
1answer
102 views

Filter Google Earth Engine image collection between today and 10 days ago

I wrote a small script that filters GEE image collection by date that I'm manually change: var start_date = '2018-11-02' var end_date = '2018-11-30' // choose image collection var ls8 = ee....
0
votes
2answers
113 views

GeoServer WFS viewParams for complex features

In GeoServer, I installed an app-schema linked to a PostGIS database. When I call the layer via the WFS GetFeature I have an INSPIRE compliant GML file that looks like (small portion of the GML): <...
2
votes
1answer
68 views

Filtering Polygon Data with many statements in QGIS

Working with QGIS 3.4.1 - Madeira I am trying to perform a simple Filter, but when I include more than 31 values of a given field I get Zero returns. Is there a limit to the number of statements ...
1
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0answers
113 views

Filter on joined tables in QGIS

QGIS 3.2.3: I have a shapefile and an Excel table which is joined to the shapefile based on matching IDs. I would like to filter the shapefile while using a joined field from the Excel table. When I ...
0
votes
3answers
70 views

Filtering attributes in a shapefile using a common ID from an Excel file

I am using QGIS 2.18.11 and I have a shape layer with lines and polylines I need to review; but not all of them, only certain ones. The ones I need to review are marked in a specific field (rev = 0 or ...
2
votes
1answer
389 views

Filtering earth engine image collection by image ID

I'm trying to filter an image collection using not bands within each image of the collection, but by pattern matching in the image ID. Using: var dataset_2099 = ee.ImageCollection('NASA/NEX-DCP30') ...
0
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1answer
38 views

How can I turn editable a shapefile that has been previously saved filtered?

After describing this issue in Qgis: Shape layer turns non-editable if saved filtered (where the answer basically was "if you filter, don't edit"), it has happened again (filtering and editing ...
0
votes
1answer
118 views

Apply .median reducer to image collection over roi EXCLUDING images with high cloud cover. GEE

I'm trying to train an algorithm to detect mangrove forests in several regions around Asia for each year using Landsat 8. When I apply the .median reducer on some image collections over a 1-year ...