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What is the best way to calculate Albedo effect With ArcGis from Snow and DEM dataset? أكثر...

I am trying to create a map where I can draw a selection area, and get info of all graphic pointers under it, I tried to modify the following example, but they are using web service and queries, and I want it with json or array. Thats the example I am following...

I have joined a dataset containing the polygons of green spaces, with a dataset containing vegetation polygons using intersect. The result is a dataset with separate entries for each vegetation polygon within the green spaces. Looking like this: What I want is the total area of each...

I'd like to add minimap(or mini-map) feature to my app, which were developed based on QGIS. I know there is a overview feature, however, it is quite different from minimap. The minimap should show basic features of canvas window, such as map, item.It should be like this: Any advice would be...

I would like to know a disk space usage for Europe extract (Nominatim, tile server, both data structures and rendered tiles). I have currently map server with an european country extract and I tried to estimate disk usage for Europe. My estimation is a very big number (about 1,3 - 1,4TB!).Is it...

When exporting from ArcMap 10.1 to Illustrator CS5 I am getting a lot of errors (red box with plus sign). I have used this workflow in ArcMap 9.3 with no problem. There may have been a couple of errors but not the hundreds I am getting. I have played with the export dpi but the result doesn't...

Bonjour à tous, En tant que novice j'essaye d'apprivoiser python ( Dur dur d'être un charmeur de serpent ^^) J'essaye de créer un shape depuis un fichier .csv par l'intermédiaire d'un script python afin d'automatiser cette tâche par la suite. J'arrive bien à faire apparaitre un fichier...

I am trying to set CartoDB in Ubuntu 12.04. I am trying to install Python dependencies as a part of my installation. I am installing with below commands export CPLUS_INCLUDE_PATH=/usr/include/gdalexport C_INCLUDE_PATH=/usr/include/gdalsudo pip install GDALcd /tmp/pip_build_root/GDALsudo python...

I want to extract trees from a given normalized Digital Surface Model (nDSM) in SAGA GIS. My workflow is the following: Applying a Gaussian Filter to the nDSM with search radius with standard deviation=1, search mode=circle and search radius=5m Reclassifying grid values to exclude vegetation...

The question arise from reading the standard "OGC® Sensor Planning Service Interface Standard 2.0 Earth Observation Satellite Tasking Extension", that you can get from http://www.opengeospatial.org/standards/sps (Although, I think it is more general and also applies to kml standard too)...

please advice what could be wrong in my situation: I succesfully generated sql-file using osm2po I tried to run it within PostgreSQL and got the following error: ********** Error **********ERROR: Table 'BY2_2po_4pgr' does not occur in the search_pathSQL state: P0001Context: SQL statement...

OK, I have no idea what's going on. I'm using a Mac and successfully installed pgRouting. I used osm2po on some data, which created a sql file. I imported the sql file into a pgRouting database and all is well, except the fact I only took into account routes for cars. After Carsten helped me...

While selecting the GRASS algorithms 'Processing algorithm: v.to.points - Create points along input lines' The error message came up: The specified GRASS GIS 7 folder does not contain a valid set of GRASS GIS 7 modules. Please, go to the Processing settings dialog, and check that...

صورة: http://u.damasgate.com/3files/6j0z1samr55wdrp5as5q.jpg الرابط الخرائط الطبوغرافية لجميع مناطق المملكة العربية السعودية - مقياس... أكثر...

I am getting the compile error at pcolor.RGB. I want to add a color to the line feature. How to modify the code? Public Sub surya()Dim pmxdoc As IMxDocumentDim pstylegallery As IStyleGalleryDim pEnustylegalleryItem As IEnumStyleGalleryItemDim pstylegalleryItem As IStyleGalleryItemDim...

Is this possible in ArcGIS to have variable number of arrows on the line to show direction? This is an ArcGIS example, where I can have fixed (1,2,3,4,5...) number of arrows and it stays the same doesn't matter what the line length is. First and last always stick to the end, doesn't help with...

In ArcObjects how to check Road (polyline) direction? أكثر...

Running QGIS 2.10.1 on Ubuntu 14.04 x64. Going to add a column to the attribute table (GPX layer) but couldn't select any type. Then, failed - "Failed to add field 'NameTest' of type. Is the field name unique?". Need to provide types firstly before adding a column? How to set it? Thanks...

I have two shape layers, one containing 93 points and the other layer containing 15075 points. I am trying to randomly assign a new XY position for each of the 93 points to any of the 15075 point locations in the second layer. I have tried using the create random points tool, but this only...

Talking about the future sometimes requires critiquing the present. The wonderful thing about an open source project is we can be quite open about limitations, and discuss ways forward. OpenDroneMap is a really interesting and captivating project… and there’s more work to do. To understand what...