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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4
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0answers
26 views

QGIS Atlas: Filter maps based on attributes (more than one)?

I have a series of maps with the same geographic boundaries but with different set of points (from the same layer). I would like to create an Atlas where the change is based on the attributes. A ...
0
votes
0answers
32 views

GeoServer SLD Filter rule before PointStacker transformation

I'm trying to apply a filter rule in an SLD, before applying the GeoServer PointStacker transformation (which groups points that are too close to distinguish their icons). This transformation is ...
1
vote
1answer
18 views

Geoserver CSS style for PropertyIsLike

I am trying to convert sld to css style. The below code is have written sld style for filter a word using PropertyIsLike <ogc:Filter> <ogc:PropertyIsLike wildCard="%" singleChar="_" ...
1
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0answers
15 views

Filter GPS tracks to determine “Moving Time”

I am working with GPS tracks of outdoor activities, think cycling, running, hiking. These activities often have "rest periods" where people take a break, wait at traffic lights, or just stopped their ...
1
vote
1answer
23 views

Filter App Template - ArcGIS Online

I would like to use the Filter App Template for an ArcGIS Online Map I'm creating. I'm working with a water system, and I want the user to be able to use the filters to search for certain junction ...
4
votes
2answers
122 views

Reconstructing MODIS time-series applying Savitzky-Golay Filter with Python/Numpy

I want to apply the 'Savitzky-Golay' (savgol) filter to my time series, MODIS dataset, to remove noise (i.e., cloud pixels, etc.) in my data. MODIS have quality flags that indicates the reliability of ...
3
votes
0answers
62 views

Queen vs Rook neighborhood

Queen and rook neighborhoods are two common ways to calculate statistics for a focal cell. They are also known an Moore and (von) Neumann neighborhoods. I think a "bishop version", i.e. from lower ...
1
vote
1answer
30 views

QGIS points filter

I'd like to use the points filter tool in the QGIS processing toolbox to remove errant gps points from data i'm looking at. I've had limited success playing with it and I was hoping someone who is ...
3
votes
2answers
44 views

Filtering information in two attribute tables using QGIS?

I'm an amateur in QGIS so please forgive me for not using the correct definitions. I have a polygon map (shape file) with the neighborhoods of my city. Each one of this neighborhoods has it's own ...
3
votes
2answers
65 views

Copy/convert selection into filter/query builder of QGIS?

Can anyone tell me if it is possible (and how) to convert or copy a selection on a layer (that has not been created through "select by expression", but instead by irregular selections from a canvas, ...
2
votes
1answer
44 views

How to find records using a distance filter, in a table of Points?

My table fields are: POSIC (id, geom, dt_inclusion). DB is PostGIS. Data comes from a GPS Source, then i can create a route ordening the points by Date_Inclusion. So, lets say i have registries A,B,C ...
1
vote
0answers
12 views

GeoTools FeatureCollection to Filter (make Filter from a FeatureCollection)

I have a FeatureCollection and I want to make a Filter of them. One way is that I may use FilterFactory#id(Set<Identifier> set) to make a filter. FilterFactory ff = ...
0
votes
0answers
17 views

Qgis_mapserv filter

direct url like these ...
2
votes
0answers
27 views

Filter features based on attribute percentage threshold [duplicate]

I have a layer (vector layer imported from a Shapefile) in QGIS 2.8.3 with a bunch of features with a single numerical attribute, 'level'. I would like to filter the features with a threshold that is ...
1
vote
0answers
57 views

Analyzing date and time in ArcGIS for Desktop? [closed]

I am have a Date/time field (MM/DD/YYYY hh:mm:ss format) in ArcMap 10.2.2 that I want to filter through and show the specific hour periods for accidents. The end result needs to help to show the ...
2
votes
1answer
40 views

QGIS table does not dynamically update after applying a filter

Using QGIS 2.10.1, if I open a table and then apply a filter using Layer Properties > General > Provider Feature Filter, the table view does not update. In other words, the initial list of records ...
0
votes
0answers
41 views

WFS query against SQL Server - Returned results not restricted by query

I have an SQL Server 2012 table, which contains a DbGeometry column with a spatial index. Then a Geoserver 2.7 using it. The problem is that when I do a WFS query it doesn't restrict the results to ...
1
vote
1answer
83 views

ArcGIS Operations Dashboard: Is there a way to create a widget which counts the occurrence of a text attribute?

I am using Operations Dashboard of ArcGIS and I would like to add a widget which count the occurrence of a text value "DAMAGED" in a field ("STATE"). I only found the way to access numeric attributes, ...
0
votes
1answer
27 views

PDAL removes color attribute from point cloud

I am trying pdal to perform a ground filtering on a point cloud (las file) with colors. I use the pcl option and this tutorial Identifying ground returns using ProgressiveMorphologicalFilter ...
0
votes
1answer
39 views

How to use SpatialOperator in filter expression in QGIS

In a python script I want to specify a request filter expression using a spatial operator. I am following the general syntax "field name" operator condition. For example: ...
0
votes
1answer
166 views

How to filter polygons in Leaflet using range slider

I have a map I'm working on with Leaflet that displays a choropleth of zip code-level data. One piece of functionality I would like to add is to allow users to use a range slider to filter out ...
2
votes
1answer
93 views

How to use spatial filter in PyQGIS?

I have a buffer and need to filter a multipoint layer (QGSVectorLayer) so that I would get only features intersecting the buffer. What I've found: a) setFilterRect() This doesn't accept polygon ...
2
votes
0answers
42 views

Are there methods of filtering gps-data with metadata?

In our project we captured GPS-tracks from a few electric vehicles in the timeframe of a year. In total we captured around 13000000 GPS-points this way. The captured data comes from electric powered ...
3
votes
2answers
123 views

QGIS Forms - Limit list values based on a previous field

Looking for assistance to set up appropriate configuration to enable drop-down lists values to be filtered based on a previous value. Basically, I have a 3-tiered categorisation structure to one of ...
1
vote
2answers
84 views

How to request paginated or filtered data from WFS 2.0?

I want to download a data set from a WFS 2.0 server via HTTP GET, with curl for instance. $ curl -X GET http://example.com/wfs/?service=WFS&request=GetFeature ...
0
votes
1answer
69 views

How to find out if a WFS instance supports filtering via CQL?

I am considering using Common Query Language (CQL) to add filter parameter to a HTTP curl query which runs against a WFS server. I found out that GeoServer supports CQL via WFS. Can I tell from a ...
1
vote
0answers
43 views

How to 'filter' a district by clicking on it in Leaflet?

I have created a basic layer of districts on a background google streetmap on QGIS. Using the qgis2leaflet plug in, I'm able to render a webpage of the same. I want the web product to be such that ...
1
vote
0answers
227 views

Filter geoJSON layer after it has been loaded

I'm declaring and defining a geoJSON layer first, like: var layer1 = L.geoJson(null, { onEachFeature: function(feature, layer) { ... } }); ..and then loading a CSV into it, like: ...
2
votes
1answer
43 views

Deleting only specific LiDAR points in QTM with Mensuration tool

I'm using Quick Terrain Modeler (QTM) 64-bit v8.0.3.4 - I have a set of LiDAR data that has some points that I want to delete, but due to their location it is hard (if not impossible) to delete them ...
0
votes
0answers
39 views

How to calculate the covariance matrix of an RTK GPS system?

I am currently working to integrate an RTK GPS system into a sensor fusion framework. The framework is based on an Extended Kalman Filter, which is why I need an accurate estimate of the measurement ...
1
vote
1answer
115 views

jquery range slider to filter geoserver layer attribute

i would like to apply with jquery range slider a filter to an attribute of a geoserver layer. I prepared the code for the shape topp:state, attribute PERSONS. How is it possible filter the PERSONS ...
3
votes
1answer
145 views

How do you classify unclassified pixels in a land cover geotiff tile?

While printing out the raw pixel values of a GEOTIFF land cover tile I found 90 % of pixels have normal values i.e. those that the documentation describes (8 bit integers describing a land cover ...
0
votes
1answer
74 views

Filter (no display) layers in GeoExt.LegendPanel with names LIKE some pattern

This works to avoid Basemap layers such as Google Maps and overlays such as WMS to appear in the GeoExt Legend Panel: var legendPanel = new GeoExt.LegendPanel({ border: false, filter: ...
0
votes
1answer
114 views

Getting the nearest point and applying attribute filter using Distance Matrix in QGIS

I have two point layers, one with 233 row, other with 1531. For every point in layer 1, I would like to get the closest point from layer 2, (ok simple enough, but here's a trick) that has the value of ...
0
votes
1answer
382 views

How to use filter encoding in a WFS query on MapServer?

I need to query this WFS public service http://wms.pcn.minambiente.it/ogc?map=/ms_ogc/wfs/Numeri_Civici_2012.map&service=wfs&request=getCapabilities The layer I need to query is this one ...
1
vote
0answers
68 views

SLD filter questions using the other two conditions

I would like to specify the color and size in accordance with the speed and scale. This is a step of respectively 10. <Rule> <Name>rotate_ps1-1</Name> ...
0
votes
0answers
138 views

Filtering noise out from bare-earth DEM with terrace fields?

I have a 1m bare-earth DEM, derived from LiDAR data, representing a terraced landscape. For the sake of any subsequent use of the DEM (e.g., least-cost path, cost surface analysis, and the like) I am ...
2
votes
1answer
187 views

Geoserver WMS Filtering: Clipping geometry against a polygon

My data set is a series of multilinestrings representing roads. During a WMS GetMap request, I want to specify a polygon and display only the portions of those roads that fall within the polygon. I am ...
0
votes
0answers
38 views

Can we use morphological filter in SAGA GIS for the generation of DTM

I have DSM generated from ERDAS LPS. I need to filter the DSM to get bare earth model using different filters. I tried using morphological filter in ENVI but the results are in grey scales, so i cant ...
0
votes
0answers
42 views

Like query with “singleChar” does not work correctly in OpenLayers.StyleMap

I am working on a GIS API, based on OpenLayers 2.13. I want to represent my data using WMS and Vector layers. Recently, I have started developing the support for LIKE queries in filters and in style ...
1
vote
0answers
26 views

To filter the wrong data of point positioning

I have collected GPGGA data by Novatel OEMV receiver in static single point mode. I have so much data (GPGGA format) and I want to get the static point axis by averaging all data. But some of the data ...
1
vote
1answer
642 views

Removing duplicate data using FME

There are three roadkill data sets from three different institutions. We are sure that a combined data set will have duplicates. The three institutions will probably record their data differently: ...
0
votes
2answers
118 views

Is there a way to use IN filters in OpenLayers?

Is there a way to use IN filters (like the IN operator from SQL) in OpenLayers 2? For example, let's say, I want a filter like this: city = 'Paris' OR city = 'London' OR city = 'Lisbon' In ...
1
vote
0answers
51 views

How can I get a remote village transportation network from openstreetmap?

How can I get such a remote village transportation network from openstreetmap? nodes represent remote villages links represents public transportation tools, like buses Something like that: It ...
1
vote
2answers
452 views

QGIS Rule Based Rendering

I am looking for an example of how to use the QgsRuleBasedRendererV2 to filter features of a layer based on an attribute value (0 or 1). Has anyone done this in Python or C++?
0
votes
0answers
12 views

opening modis ndvi data .tif in timesat 3.1 windows [duplicate]

my aim is to apply savitzky golay filter to MODIS ndvi data in tif format. how do i open them in timesat 3.1 in windows .i tried opening tif files in imageview but the app does nothing. please help . ...
1
vote
1answer
186 views

applying savitzky golay filter to modis ndvi data

I want to smooth the ndvi MODIS 16 bit integer data .tif for LULC classification . i have timesat 3.1 software on windows but i don't how to apply the SG filter . i am not that good in programming . i ...
0
votes
1answer
84 views

Filtering data in CartoDB

I try to filter multiple values in the same column in CartoDB. I then like to filter on another column. I do not manage to filter on multiple values in one column in the graphical interface (one ...
1
vote
1answer
37 views

Filtering GML data by attributes (not attr.value) on the server side for calling them with http protocol, Openlayers

Supposedely it is easy but I can't figure it out: How to get data from server (format: gml) which contains all features but not all of the attributes? I have really big data and it is important just ...
2
votes
1answer
181 views

New filter expression QGIS 2.8

I try the new filter expression with QGIS 2.8. I want to filter only the selected objects on a layer in my map. My expression is: import processing from qgis.core import * vlayer = ...