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I am doing some isochrones using the OSM route plugin, but if I am keeping my working space open for a few of hours, the shape of the isochrones is changing. I guess that from the RecursiveGrid mode, turns into TIN mode without me changing any setting. Does somebody know what is the reason...

I'm trying to load an Ordnance Survey Great Britain 1:50000 basemap that I downloaded. It should be centred over north-east Scotland, but is showing as somewhere near Nigeria (Africa). I've tried changing projections (used British National Grid and also WGS 1984), this didn't help. All other...

I'm getting some strange results in a multivalues to points extraction from a NETCDF4 layer from the MERRA reanalysis product. In particular, it seems like the values being assigned are way off in some areas, as you can see from the different colours of the points and the raster, which should be...

I have data in PostGIS DB which I need to edit with QGIS. I created a project file with QGIS 2.10. I was able to connect and open the PostGIS database, but ran into problems when I tried to edit DB with QGIS 2.10. Editing tools are greyed out and I can only add more polygons. After adding new...

ArcGIS freezes when I try to operate it with ortofotos (ECW format). Is there any easy way to reduce the size/quality before opening them? I would like to try exporting them into another format using ArcCatalog but need suggestions which values to choose (compression, ...). أكثر...

The function ST_asGeoJSON returns something like: "st_asgeojson": { "type":"MultiLineString", "coordinates":[ [ [-3.13512629299993,39.7174353130001], [-19.13510345099996,2.7174767110001] ] ] }And I wonder if there's a way to simplify or...

We have a ArcGIS Network Analyst service which uses enterprise geodatabase (Oracle). Frequently we receive updated data in shp format and we want to; Overwrite existing data which we keep in database. (Delete old rows, update existing rows and add non-existing rows) Reload - build network...

I have added a layer in Geoserver 2.7.2. The source for the layer is from Oracle 12c spatial database.The coordinates in the database are like below: (-5142271.7422,-15468857.8139 ,-5142270.7301,-15468857.9476 ,-5142270.7301,-15468858.3868 ,-5142270.1763,-15468858.6638)But in the GeoJson file...

Because I always get an error message when I try to connect with a sepcific WMS.From my testings I can exclude port 80. أكثر...

I would like to know how many features are rendered in my QgsGraduatedSymbolRendererV2 per range. I need to know also the exact range (lower and upper value). I know how to get each range : QgsVectorLayer.render().ranges() but I can't get the feature count there. I saw the function...

I'm pretty new to QGIS and GIS.I have an python application that get periodically position [lat,long,height] updates of several moving objects. The idea is that the existing application sends the data to QGIs and QGIS prints the objects as a plain circle on the map. In the next loop, QGIS...

I have two fields say "State" and "name" which would be get from the two comboboxes. After which, based on the current text in the combo box, I want to make QgsExpression and feature that satisfies QgsExpression should be get back and for that feature I would do spatial operations. How this...

I have sample points (shape file converted from a .xls file which contains XY coordinates,nnx,nny and canopy density) and a landsat etm+ image. First I applied 'SpatialAnalyst Tools>Extraction >Sample' in ArcGIS in order to extracted spectral signatures of all sample points from Landsat image. I...

QGIS 2.0 uses overpass to query osm data. I want to make customized queries like only buildings or only roads or both. And i only want the geometry so i'll go for skel mode in overpass. I may also need to set the timeout options for large data. How can i make these custom queries from qgis...

I asked this question on Stack Overflow before I realised this site existed. As this site it more appropriate, I'll ask it here too. I'm trying to install gdal from pip pip install gdal inside a virtual environment (Ubuntu). It fails because it cannot find cpl_port.h...

Trimble has introduced the latest version of its deformation monitoring software—Trimble 4D Control version 4.5 at the International Symposium on Slope Stability in Open Pit Mining and Civil Engineering, in Africa. Trimble 4D Control software analyzes and reports on the condition and behavior of...

كل ما تريد معرفته عن الاساسات السطحيه هى مذكرة اساسيه لمبتدئين التنفيذ مدعمة بالصور التى تنقلك عبر خطوات تنفيذ الاساسات المختلفه و من أهم العناوين الرئيسيه التى تتناولها المذكره أنواع الاساسات السطحيه -الميد والشدات ما يجب على مصمم الاساس تحديده للمهندس المنفذ الخرسانة العاديه والاساسات -نجارة...

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