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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1answer
51 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 ...
3
votes
1answer
45 views

How to remove spikes from grid in SAGA GIS? [duplicate]

I tried to get a grid by interpolating LAS file using Ordinary Kriging. But the product grid has many pixels which values strongly stands out from average surface - I mean one pixel sinks nad spikes. ...
6
votes
1answer
508 views

Create custom Authentication filter in GeoServer 2.3.0

Context In my current project, I've the requirement to validate that requests coming to GeoServer (2.3.0) are allowed. The project holds those facts: the GS client cannot provide the principal ...
0
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1answer
30 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
1answer
58 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: ...
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0answers
27 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> ...
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0answers
69 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 ...
1
vote
1answer
43 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 ...
2
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1answer
433 views

combine two OCG filters in Openlayers : ERROR: invalid input syntax for integer

i need to combine two OCG filters. each one works fine separably but if i combine them using Filter.Logical.OR, the first one works only. var c_filter = new OpenLayers.Filter.Logical({ type: ...
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0answers
9 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 ...
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0answers
27 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 ...
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0answers
10 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 ...
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2answers
38 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 ...
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0answers
35 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
372 views

Using sieve filter in ERDAS Imagine and/or ArcGIS for Desktop?

Where can i use a sieve filter for my supervised classification? Can i do it in Erdas Imagine or in ArcGIS? I can't find it anywhere.
1
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2answers
74 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++?
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0answers
53 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 ...
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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 . ...
0
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1answer
24 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
30 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
128 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 = ...
1
vote
1answer
81 views

How can i filter on ID's through WFS Post request?

I want to select a set of features from my GeoServer (its Running 2.0.0) and use a query using multiple ID's to get their values. For this i send XML in a post message to the Geoserver: ...
2
votes
1answer
63 views

How to apply a filter to multiple vector layers in QGIS?

I am trying to apply an attribute filter to multiple layers in QGIS at once. The filter is to be applied to .osm data brought in through PostGIS to QGIS. I have tried selecting multiple layers -> ...
0
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0answers
80 views

Leaflet filtering existing featuregroup

I have a leftleat map and i would like to filter the featuregroup i am displaying. exp_colJSON = new L.geoJson(exp_col,{ onEachFeature: pop_col, pointToLayer: function (feature, latlng) { ...
1
vote
2answers
51 views

Search/Filter capability in GIS

I'm a database administrator who's working with a new client who'd like to use a "search" or "filter" application with GIS. For example, he would like to search within his area of properties that are ...
1
vote
2answers
270 views

gdalwarp batch process

I have downloaded numerous hdf files from an ftp site. Half of them were level 1 and the rest were level 2. Lvl1 format is Afile.A1_AC.sample.hdf and the lvl 2 format is: Afile.A1_AC.sample.hdf. How ...
0
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0answers
61 views

how do I keep only highway roads and their nodes using osmfilter?

I am trying to filter a map from openstreetmaps using osmfilter to keep only highways (tag k) and the nodes that are at the extremes of these road segments. I have read many posts in different forums, ...
1
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0answers
38 views

Filtering for slope using kernel size in ArcGIS Desktop?

I have problem in smoothing the slope derived from digital elevation model. I want to do filter for the slope <5 degree in 7 X 7 kernel size, 5-20 degree in 5X5 kernel and >20 degree slope in 3X3 ...
1
vote
1answer
29 views

Filter shapefile layer in ArcPad 10.2

I have an ArcPad project that uses several Shapefile layers. How can I filter the features in one of those layers? According to my searches, I can only filter if it is an AXF layer. I'm happy to ...
0
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0answers
219 views

OpenLayers Mapserver spatial filter INTERSECTS format problems

Trying to get hand-drawn polygon delimiter for spatial query via OpenLayers to mapserver (then postgis). I can get the WKT of the drawn polygon and can substitute the dynamic values, but am having ...
1
vote
1answer
200 views

MapServer: Default spatial filter

I have MapServer setup to display data (both WMS and WFS), however I'm having a problem adding a default filter. There's is an area on the map that users should not be able to retrieve features from. ...
1
vote
1answer
58 views

Filter Geocoder by Country

I'm trying to filter esri's geocoder for a specific country. I've had some success, but nothing works extremely well. I would have thought simply adding sourceCountry = "xxx" to the parameters of ...
4
votes
2answers
189 views

Filtering Overpass-API by country

Does anyone know how to perform a overpass-api request like this? "Show me all banks in Germany"? I could just show all 'amenity = bank' in a specific bounding-box. But Germany (or most of all ...
0
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0answers
7 views

Using CQL to query Multiple WMS layers? [duplicate]

I have two WMS layers, one with points which lie on a state map. I want to use cql to display a particular state and points on it ..when I separate the queries with a semicolon (ex ...
0
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0answers
147 views

MapServer/WFS with filter doesn't return result

I'm using MapServer version 6.4.1 with PostGIS for my GIS app. When querying a property through 'REQUEST=GetFeature' MapServer returns all the expected data correctly, but if it's set a simple filter, ...
2
votes
0answers
23 views

How to select points as geomtry in QGIS when both multipolygons and points are stated within the wfs-server?

I'm trying to show data from the following server in QGIS: h ttp://geodata.nationaalgeoregister.nl/bag/wfs? I made a filter on the data I would like to appear in my map. This is how I stated the ...
1
vote
2answers
44 views

Display only the features containing a name

I used QGis to open a shapefile with the rivers in my state (Rio Grande do Sul, Brazil). I would like to know "the name of every river", but when I click on the rivers, most of the small ones don't ...
0
votes
1answer
41 views

SQL in CartoDB to select using OR more efficiently

I made this map a CartoDB map to to show the countries that have banned their citizens working as maids in the Gulf states, I also want to show the Gulf states as one colour. I created this SQL ...
0
votes
0answers
74 views

How to create a query dialog with MapBox JS?

I like to have a query dialog in the map in order to filter data according to specified fields and attributes selected by the user. Example: user may want to select a state via a dropdown menu and ...
1
vote
0answers
20 views

QGIS Raster moving when Majority filter

I'm running QGIS 2.01 Dufour on Linux Mint. Data & project are WGS84. I'm trying to smooth a grid & following other posts here I've used the Majority filter. This is looking helpful, but the ...
2
votes
1answer
117 views

Filter query error in QGIS2.4 or 2.6

I get this error when undertaking in query in QGIS2.4 or QGIS2.6: An error occurred when executing the query. The data provider said: OGR[3] error 1: Unrecognised field name ...
1
vote
2answers
738 views

Change marker color based on GeoJSON filter in Leaftlet

This is what I would like to do: Display all features of a GeoJSON file using Leaflet. Provide a text box where a property can be entered, if any of the GeoJSON properties match with what is entered ...
4
votes
1answer
189 views

Getting feature at point in C#

I want to get the feature at where mouse was clicked in map. So I was wondering how to get features which intersects with that point. Plus I was wondering how can I check what type of object it is ...
2
votes
0answers
105 views

SLD question regarding filter

I had a problem with my SLD today, I actually solved my issue but i'm very curious if there's another way around it, Mainly because my method is a hassle and may not work in other situations. I've ...
2
votes
0answers
57 views

How to Use GetGeomtype Gdal Python

I am just wondering what I am doing wrong when trying to use the GetGeomType. I need to focus on separating layers from a pix file. Two categories are the bitmaps(which are vectors) and then the ...
1
vote
1answer
43 views

What do cartocss attachments along filters mean?

I'm exploring openstreetmap-carto style and I wonder what does such syntax mean: [natural = 'water']::natural, [landuse = 'reservoir']::landuse, [waterway = 'riverbank']::waterway Is this ...
2
votes
1answer
72 views

Filtering MSSQL layers in QGIS doesnt work

In my QGIS Plugin I am filtering layers with this Python code: FeatureIterator = layer.getFeatures( QgsFeatureRequest().setFilterExpression ("Fieldname='SomeValue'") ) for feature in FeatureIterator ...
2
votes
2answers
631 views

Creating New Layer After Sorting Attribute Table using QGIS?

I have been self-teaching myself some open source GIS. I downloaded QGIS and have been following this four part tutorial - ...
1
vote
1answer
207 views

How works Openlayers GetFeature Filter strategy

I want to select on map that "res_id = 182" but that is selecting all objects on the map. var filter = new OpenLayers.Filter.Comparison({ type: OpenLayers.Filter.Comparison.EQUAL_TO, ...
1
vote
1answer
86 views

featureId filtering in wfs openlayers

I want to define a featureId fiter for wfs layer like below: wfs = new OpenLayers.Layer.Vector("WFS Vectore", { strategies: [new OpenLayers.Strategy.BBOX(), saveStrategy], projection: ...