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I've got some elevation data represented in ascii gridded xyz-files which I want to convert to a conventional raster format. What's a bit special is that the elevation values have sub-meter accuracy, as they have one decimal (for example: '101.7') As a rule I prefer to use open source software...

At the time of generating PDF file when I am using “Hindi and Gujrati” Language then I am getting “Black Squre Dots”. Below I am using code. Here I am trying to convert in UTF-8 but it’s not converting. file_path_PDF_new="C:\example\hello.pdf" doc =...

since I am abandoning windows to stay only with Linux, I started learning how to use QGIS. So far so good. However, trying to reproduce a python script from Arcpy to PyQGIS I noticed something. When I import the exactly same image in both software applications (ArcMap and QGIS), the min and max...

I need a special projection for the purpose of effective presentation on a poster. I'd like to present the study area (Czech republic) in a context of whole Europe in such a way, that the Czech republic takes the most area (like 70%) in the center, and the rest of Europe is around it, but...

كتاب الدكتور محمد رياض الجغرافيا الاقتصادية والانتاج الحيوي كتب - الجغرافيا الاقتصادية وجغرافية الإنتاج الحيوي... أكثر...

I am looking for coordinates (longitude and latitude) of each state of Brazil.Where can I find that? I have found a file for the US states here: http://econym.org.uk/gmap/states.xml, I am now looking for something similar for Brazil... أكثر...

I have 1000+ polygons, each has an attribute "Project_Area". There are maybe 8 different project areas. Is it possible using built-in Tools or Python to create a new shapefile that encompasses each of the 8 project areas? Its not the hardest task to do manually, but I shall need to do it many...

I'm looking for a way to implement visibility (aka viewshed). I found a previous GIS SE question that suggested a few GIS applications (not what I need - I'm trying to embed the calculations), and also SAGA. SAGA looks more like what I'm looking for (C++, Java, C# classes), but I can't...

While investigating the recent explosions in Tianjin, China, we noticed that the street map of China is out of alignment in both Google Earth and Google Maps. It is tempting to think that the explosions were so large that they shook the street map out of place (the largest, according to...

Bonjour, J'ai importé un fichier csv sur QGIS puis l'ai transformé en shp. Je possède une colonne date sous le format dd/MM/yyyy. J'ai donc indiqué sous QGIS que cette colonne est sous ce format. Je souhaiterais maintenant pouvoir faire des cartes par année. Ou encore pouvoir afficher les...

I have Geoserver 2.7.2 (Jetty embedded) installed on a RHEL6.5 and everything seems OK. I am currently migrating this test server to production environment. To minimize vulnerabilities in production, it is requested to avoid any critical information logged by servers (path, warnings, software...

I want to establish connexion QGIS and PostGIS in order to run the pgRouting Layer, how can I do it? أكثر...

I recently generated a surface difference calcul, in order to make a 3D analysis of a volume (in blue on the image). I wanted now to split this final form into different part, in order to access to the volume information of each volume created (I used the "cut polygon" tool, that's why you can...

It's the first time I work with Android and ESRI shapefile. I tried to find but could not find any tutorials to display ESRI shapefile in Android. Somebody can help me about this??? Thank you so so much! أكثر...

Bonjour. Utilisateur non expert de QGIS j'ai toutefois réussi à mettre en place une action qui me permet dans mon projet d'ouvrir un document en cliquant un objet. Toutefois je voudrais aller plus loin en allant directement sur le texte qui fait référence à mon objet (son numéro de référence...

could anybody help me? in my Arc Catalog the edit bar for Metadata disappeared. In my Catalog it looks like this: But this ist from Esri website, it should look like this: How can I add this Editing bar? أكثر...

Employees spend a significant amount of time looking for information from a wide variety of sources and then interpreting that information; and that information is often retrieved from different data stores, slowing down the decision-making process. Join Google and its partner, Thermopylae, to...

In the old times cartographers were artists and many of their hand crafted maps where a piece of genius. In the era of GIS, the esthetic role of maps has been diminished. With Geo-viz web services like cartoDB or MapBox it’s easy to make a good-looking map but it’s actually an interesting data...

I find rasterio much easier to use that plain ogr/gdal, so I'd prefer using it. However, I need to process large rasters, so reading rasters by block as explained in the Python GDAL course is important for me. However, does rasterio support this? Or should I handle the large, tilable rasters...

I want to programmatically classify a raster by substituting the pixel values, for example if 1 < val < 10 put 5 11 < val < 20 put 15 I'm using the query bellow and it's working: Select St_Reclass(a.rast, 1, '[200-210):205,[210-220):215','32BF',0) From raster1 aSo...