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When I try to run the R script "Summary statistics" in QGIS 2.12.1 on a Windows 7/64 bit machine, I get the error message "error in if (!file.info(DSN)$isdir) DSN missing value where TRUE/FALSE needed," and the output file is empty. Having read a comment that R doesn't work properly if...

I installed/updated microsoft visual c++ 2013 and microsoft directX runtime 2013. After that, whenever i open qgis i get this The program can't start because MSVCP120.dll is missing from your computer. أكثر...

Is it possible to export a QGIS project to Mapnik xml? I'm using QGIS 2.4 and Quantumnik does not seem to work with that version. أكثر...

I have a file geodatabase (10.2) with geodatabase feature classes as well as geodatabase raster datasets. I am using the Esri Geodb API reader in FME Desktop 2014 to read feature types from this geodatabase. However none of the raster datasets stored in the geodatabase are being acknowledged...

I've been given a data extract that appears to be from an ESRI server, and I think is meant to be map tiles (e.g. from a tile cache server). I don't know enough about ESRI products to identify which one it comes from, and the timing (summer break in this hemisphere) is bad for asking the...

This question already has an answer here: Can Join be detected programmatically by ArcPy? 2 answers I've a question about arcpy List* modules. I have a quite large amount of data on...

I've got 2 polygons layers (no gaps): IDUs and crops. What I want is to identify the 3 largest crops by % area for each IDU. This seems common enough but I couldn't find a way to do it all using tools, so I decided to try and learn basic arcpy to finish the job. I'm in ArcGIS 10.1 SP 1...

Here are the layers that I have: State / Province polygon file (With Area Field) County / Ward polygon (with no area field), but all the polygons are within the state boundaries Water ways for the whole province / state. (includes rivers, lakes, creeks, brooks, etc) with no area fields...

I want to install ArcGIS Server (AGS) 10 but our users only have ArcGIS Desktop 9.3.1. So does Esri support: Access/use AGS services from 10 in 9.3.1? Manage (create services etc) AGS 10 from ArcCatalog 9.3.1? I know you can use the web manager but our users are used to managing...

In my attribute tables field I am trying to get rid of the "&" in between names i.e. "John Adams & wife" and want it to say "John Adams and Wife" in all the attributes with "&". What is the VB for that? I can't seem to find it in the help page of ArcGIS. أكثر...

The letter A appears to take shape from the abundant aerosols in Earth’s atmosphere. أكثر...

I'm writing a shapefile using OGR in python, creating fields on-the-fly from a python data source. Creation of a new field requires an OGR data type, is there a mapping between OGR and python data types? For example, this would be the norm: new_field = ogr.FieldDefn('MYFLD'...

Is there a way to use an AND statement within SAGA raster calculator expression to include several conditions in the same operation? I have 3 rasters, the statment should be: If (A = 0 and B = 0), Then 0, Else C Normally, I'd use AND for A and B, but I don't see an AND operator in the SAGA...

Find out what’s new in the 64-bit release of MapInfo Discover 2015. Check out some of the latest features including the new ribbon interface and gain an insight into the highly performant raster technology. أكثر...

New sets of customizable maps of the United States are now available for download, in both PowerPoint and Keynote formats (see the end of this post). Three maps are included in each presentation-software set. The first simply has the outlines of the states, as well as the District of Columbia...

تقــــديـم عـــــام يعتبر العنب من أهم الفواكه الصيفية ذات قيمة غذائية عالية، وقد ورد في القرآن الكريم في 11 آية. تعتبر آسيا الموطن الأصلي للعنب، إذ تم إدخاله من طرف الفينيقيين إلى أوروبا ثم إلى إفريقيا الشمالية. تنتشر غراسة الكروم حاليا في كل المناطق المعتدلة بمختلف القارات العالم، إذ يعتبر...

Nowadays, there are many researches on the analysis of Geosocial big data, such as geotweeet and as foursquare venues and OSS(Open Source Software) has an important role on this. In the analyzing geosocial big data, there are several different steps such as data collection, data parsing, data...

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