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
21 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
29 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
28 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
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2answers
23 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 ...
0
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0answers
19 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
25 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 ...
2
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0answers
24 views

How to remove spikes from grid in SAGA GIS?

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. ...
1
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1answer
13 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 ...
1
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1answer
39 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
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2answers
77 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
6 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
105 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
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0answers
22 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
41 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
31 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 ...
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0answers
46 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
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0answers
15 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
93 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 ...
4
votes
1answer
135 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
62 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 ...
0
votes
2answers
341 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 ...
2
votes
0answers
44 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
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1answer
35 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 ...
1
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2answers
218 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 ...
1
vote
1answer
147 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
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1answer
63 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: ...
0
votes
2answers
42 views

Can't figure out wfs url filter - what am i doing wrong?

I'm trying to figure out how to use the filtering function on a WFS layer. Anywhere I look, there is not an example of the xml AND the query alongside it explaining how it works. In the url query ...
2
votes
1answer
65 views

How to filter out osm data made by specific users - osmosis or a better suggestion

I am trying to find the code for a query in osmosis that will allow me to download only contributions made by certain OpenStreetMap users. I was thinking to use osmosis to filter out all the ...
2
votes
1answer
68 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 ...
0
votes
1answer
83 views

How to insert a feature using WFS-T based on a criteria?

I am pretty new to WFS/WFS-T and need help with some suggestions on how the following requirement can be implemented. We have a need to insert a feature into a PostGIS database based on the following ...
1
vote
1answer
70 views

QGIS Filters and Queries

In QGIS is there a way to filter a layer using the Query Builder to show all values which include a particular phrase. For example I have a list of organisations and I want to filter all those which ...
2
votes
2answers
446 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 - ...
0
votes
2answers
152 views

Filter OSM files with Osmosis

I have to filter the whole Malta dataset with Osmosis only considering cycleways, footways (including used nodes of those ways) and all nodes with the tag value tourism and amenity. I write the ...
1
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1answer
41 views

QGIS: Turning Filter On and Off

When a filter is applied to a layer the layer cannot be edited. Is there any way of quickly turning the filter on or off without entering the Query Builder dialog box and removing the filter?
0
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0answers
29 views

Parsing OGC Filters with C++

Google Translation I am developing an application in C + + you need to parse OGC filter. Anyone know any way to parse an OGC filter with C + +? Estoy desarrollando una aplicación en C++ que ...
0
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0answers
34 views

Dataset required with GPS and accelerometer data

Can anyone please suggest me site or provide me a dataset which has GPS data with accelerometer data as well.I am doing a project where using accelerometer data i am trying to improve the accuracy of ...
1
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0answers
32 views

C++ parser for OGC Filter Encoding 1.0

I'm developing a C++ application and I have to parse a OGC Filter in order to implement querying functionality on a metadata repository. Does anyone know any C++ library to parse OGC Filters? Thanks. ...
1
vote
1answer
93 views

How to filter data by category, then map only maximum-value row for each?

I'm building a consolidated map of all transit systems in my area in QGIS. I have a GTFS dataset of bus lines, and it includes shapes for every trip on every route in the system (as it should), but ...
0
votes
0answers
79 views

SetSpatialFilter worked unexpected when using ogr by python

I am using ogr python binding to read the shapfile, this is the code: ..... bbox="POLYGON ((20.18164062 30.63867188,20.63867188 30.63867188,20.63867188 30.18164062,20.18164062 30.18164062,20.18164062 ...
1
vote
1answer
113 views

PostGIS views vs WFS Filtering operations on PostGIS table

In what use cases should I prefer writing PostGIS views for filtering datasets versus filtering with WFS filter encoding operators and vice versa? In both cases I would be serving the data via ...
0
votes
1answer
78 views

WFS Filter Buffer around a point

I'm trying to make a buffer around a geometry (point/s,linestring,etc) using WFS queries without luck. This is what I've been doing: <ogc:Filter> ... <ogc:Function ...
0
votes
1answer
505 views

WFS 2.0 with bbox filter and attribute filter

I am trying to get the following WFS GET request to work: wfs = "service=WFS&version=2.0.0&request=GetFeature", name = "&typeName=storeName:layerName", bboxFilter = '&bbox=' + ...
1
vote
2answers
156 views

Avoid NoData after Focal Statistics Majority

I am currently working with some classified land cover rasters (containing 8 land cover classes) in ArcGIS 10.0. I would like to make them look smoother and have therefore used the Focal Statistics ...
-1
votes
2answers
67 views

Using floating point raster image for majority filter in ArcGIS?

I'm trying to do filter images using Majority filter in ArcGIS. My input images is a float point raster image in .img format. There is an error saying "Invalid parameters". What does it mean?
0
votes
1answer
147 views

Filter geojson or shapefiles

I'm trying to create a geojson file with a few shapes of roads from OSM. Now, I've been able to get shapefiles of the greater region (province) these roads are in from http://download.geofabrik.de/ . ...
1
vote
1answer
226 views

QGIS 2.2 - expression string builder to ignore NULL values

Simply put, I would like to create a rule-based filter whereby you add 2 columns together and you get a certain colour as a result. However, some fields in Column_1 may be NULL and those exact same ...
0
votes
1answer
145 views

how to filter point features based on the filterted polygons with OpenLayers

I have one WFS polygon layer and one WFS point layer. The polygon layer has an attribute user_id. The web map has two requirements. Filter the polygons based on the attribute user_id. That is, a ...
0
votes
1answer
63 views

filtering GeoRSSLayer contents in arcgis javascript API?

I would like to make use of a public geoRSS feed with content from 10years (200+ items), however since it is too much information, i would like to show only a subset of this content in my map... I ...
1
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2answers
236 views

Where can i use a sieve filter?

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. Thank you
0
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0answers
29 views

How can I remove dipoles from rasterlayer in QGIS 2.2?

I work with geomagnetic survey data. When convertet into a rasterlayer, every object with a high magnetic potential (for exampel an iron-nail on the surface) is shown as very sharp anomalie called ...