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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5
votes
1answer
382 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 ...
2
votes
1answer
413 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: ...
1
vote
1answer
198 views

How can I map data points to OpenStreetMap (OSM) line data?

my goal is to filter measuring points of vehicles by mapping them to streets. So I could filter out all the false data located in fields and rivers and so on. I imported my data into a PostGIS ...
3
votes
0answers
91 views

Filtered SimpleFeatureCollection really slow on Map and other operations

I'm working with a shapefile having about 85.000 features. I need to select some of these using a filter and then showing these on a map. Now... If I draw the entire shapefile's features the creation ...
3
votes
0answers
390 views

SLD filter with embedded strTrim function in Geoserver

Using Geoserver 2.2.2 (GeoTools Version 8.4) on Windows 7, I'm trying to create a SLD that trims the leading and trailing spaces of a string property (using the strTrim function) and compares it to a ...
2
votes
0answers
18 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 ...
2
votes
0answers
33 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
38 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 ...
2
votes
0answers
278 views

Geoserver CQL Cross Layer Intersection Failing

I am having trouble forming a properly formatted CQL request using geoServer cross layer filer functions and was hoping others could assist. My request is as follows: ...
1
vote
0answers
9 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 ...
1
vote
0answers
27 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
0answers
320 views

How to use SLD to filter a WMS layer but without setting any styles?

I'm trying to filter (using OpenLayers) a WMS layer, served by MapServer. I've got this working by building the appropriate OpenLayers.Filter rule(s) with an empty Polygon symbolizer (so no specific ...
1
vote
0answers
110 views

Kalmanfilter GNSS IMU

I want to make an uncoupled Kalman filter. The input data are GPS and the output of my strapdown Algorithm from the IMU. The Strapdown Algorithm is used to calculate the actual position and velocity ...
1
vote
0answers
88 views

How do I account for changing latitude with a spatial filter?

I'm working with data in latitude/longitude grid form in a non-GIS specialised package (MATLAB) and wish to apply spatial filters to it. As this data contains a broad range of latitudes and is ...
0
votes
0answers
55 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, ...
0
votes
0answers
23 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 ...
0
votes
0answers
25 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
votes
0answers
31 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 ...
0
votes
0answers
64 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 ...
0
votes
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 ...
0
votes
0answers
22 views

How to get page number of Feature in GeoServer 2.4?

I have GeoExt-based client and FeatureGrid with PagingToolbar in it. Also I have a big vector layer (6018 features), so I have to use grid with multiple pages. I want to synchronise grid with map. ...
0
votes
0answers
66 views

setSubsetString with limit?

I have a layer with couple thousands objects in QGIS and I would like to create a filter of the layer where result would be only one object. I would like to do it in console or plugin. I am using ...
0
votes
0answers
177 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 ...