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I want to publish my maps on sever manager. My map data is in PostgreSQL and I want to connect it without using ArcGIS Desktop. Is there any possibility to publish service without involving ArcGIS Desktop. أكثر...

i am doing a research of fire scar detection and mapping using open source software particularly qgis. How do i do the detection burn scars and how do i map them for area quantification? أكثر...

As the figure shows above, after classifying the raster, we can get the cell size by opening the raster Properties to its Source tab, and we can calculate the area by mutiplying the cell count and the cell size. How can I get the cell size using C# instead? أكثر...

Johannes Kebeck Manager – B2B aspects, Bing Maps Microsoft أكثر...

I have feature layer which needs to be updated with new attribute information. The text field I need to populate already has an established coded domain. I need to update hundreds of records and don't want to manually update. If I field calculate the selected values aren't I adding a new value...

my problem is that QGIS crashes (and go out) when I´m trying to print (on paper or to PDF) and it´s for sizes bigger than A-3. Here´s the basic information: OS is Windows XP Professional SP-3 (32 bit) QGIS versions: it happens with V-2.8.1; V-2.8.3 and V-2.12.0 with standalone installation...

In ArcMap, I can clip a layer with selected objects from another layer by using the editor toolbar. I want to do the same operation in QGIS. I want to create holes in the landuse layer by selecting objects from the lake layer. Is it possible, I cant find a similar option in QGIS 2.8.1...

I have a MODIS 250m resolution satellite image in jpg format.How do i do image processing using NDVI technique on it? Basically i have to detect vegetation for a 250m resolution MODIS image using NDVI technique. Could anyone help me with the matlab code. أكثر...

Bonjour J'ai crée un groupe de polygones rectangle a partir d'un point centre de chaqu'un et voila le code que j ai utilisé : Dim pMxDoc As IMxDocument Dim pMap As IMap Dim pFLPoint As IFeatureLayer Dim pFLRectangle As IFeatureLayer Dim pFCursorPoint As IFeatureCursor Dim pFCursorRectangle...

Contributed by: Larry A. Larson, P.E., CFM Director Emeritus-Senior Policy Advisor Association of State Floodplain Manager (ASFPM) larry@floods.org States at risk report was done by collaboration between Climate Central and ICF International. Climate Central is an independent, non-profit...

I have a string of properly formatted JSON from a VB.NET function that I am trying to pass to JavaScript where I can convert it into an OpenLayers vector layer. The string can be variable length, sometimes as small as 5,000 characters and sometimes as long as 40,000,000 characters. Here is a...

i am trying to create an indoor map with relative coordinates where the bottom left hand corner of the map is (0, 0), and the CRS is UTM, so the distance between coordinates is in meters. previously i have made indoor maps a little differently. I just created a new shapfile layer with a 'pseudo...

I am looking for high resolution imagery of the Nicobar Islands.Ideally 3 images (2004, 2005 and 2014/15).My budget is 1500 USD.Which image providers would you advice?Until now i have only worked with free (Landsat) imagery therefor i do not know where to ask. أكثر...

I noticed that the Processing algorithm, Refactor Fields has a fields mapping parameter. I don't think I've come across this and definitely not used it before from the Python Console. It provides an example on how to use it: processing.runalg("qgis:refactorfields", input...

Salut à tous, Je suis confronté à un problème de reprojection d'une couche vecteur au format shape provenant d'une conversion d'un fichier .dxf (Illustrator) via le logiciel FME. Les couches converties en shape se sont bien affichées dans Qgis avec un SCR par défaut WGS84 EPSG 4326. J'ai...

Bonjour, utilisant QGIS Dufour 2.0.1 avec mac osx 10.6.8, je souhaite utiliser l'extension Points2One afin de relier des points (créer des trajectoires à partir de localisations). L'installation ne pose aucun problème seulement ensuite, peu importe l'opération choisie si je j'utilise P2...

i'm trying to build a web map application through Opengeo Suite solution, and i was wondering how can i design my own attribute editing form. The application has its own default form and i want to customize it based on my needs. Here it is the default form: Here it is an example of a...

I have a geojson list of lat/long coordinates that make up a custom polygon of a section of my county. Ideally I would like to be able to find all the addresses that are within the polygon boundaries. My county GIS department provides for free a geojson list of all the polygon coordinates that...

How can i do this operation: I want to get a pixel value fro the satellite image (Landat, GeoTIFF, 7 bands) using qgis-python. What operators should i use? (for example in qgis's Python Console) أكثر...

I've to create a GeoJson collection (geometry + attributes) from a select and I tested this instructions: http://www.postgresonline.com/journal/archives/267-Creating-GeoJSON-Feature-Collections-with-JSON-and-PostGIS-functions.html .I've Postgres 9.3 and PostGIS 2.1 in public schema.On my data...