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I have a Postgres/PostGIS relational database and I would like to use QGIS as an interface for inserting data. The thing is that my database is quite complex and I need my tool to handle the following features: one-to-many relations, point coordinates editing and guided insert. What I call...

I want to measure the growth of different areas in special directions. The same as in this article of M.S.Moeller on page 5 (Figure 5 and 6).But I don't know how to build such a Wind Rose in Qgis.Do you have any ideas?! أكثر...

I wanted to build my own tile server as written on switch2osm site. In short: render is not happening (more details you can find here). Seems that mod_tile is not installed correctly. First it gave some errors during installation and in the end error message was: 27 warnings and 4 errors...

I am new to the site, and also fairly new to GIS, in general. I have spent the last year of graduate school familiarizing myself with the program, but am by no means a GIS expert. Please bear with me. I appreciate any and all help that anyone can provide! I'm currently interning with UN-Habitat...

I am rather a beginner at ArcGIS and I have absolutely no idea how to do this. I have to design an agricultural area, which I have the whole of it, but I am not sure which farm plant which crop and so forth. My project also doesn't contemplate such specific characteristics. However, I have all...

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I'm currently using Leaflet sync to have two maps side by side. On each side, there are maps with different GeoJson data sets. I am hoping to hover on eg. a lake on one side, then have a similar lake on the other side to get style. Does anybody know how I can link the two lakes? This is just a...

How to export coordinate system X,Y from dwg AutoCAD file using C# .NET code. Thank you أكثر...

I am trying to preform regression analysis using road accident data. The accident data is a point file for all accidents with information on the date the accident happened, time, male or female, weather conditions, vehicle manoeuvre etc, very detailed. I also have a polygon data set of census...

Can I automatically align the border of one shapefile to overlap the border of another, with editing individually each vertice? أكثر...

I allow myself to contact you about a topic for which I saw you writte an answer on this discussion : How can i use field of view in ArcGIS? So maybe you will be able to help me. I have a serie of landscape photos that I would like to locate on a map with a simple 2D field o view. I found...

Colleagues, hello! For quite a while I`m struggling to make up a map algebra expression in the ArcGIS Raster Calc… On the output I need a single raster with values 0, 30 and nodata (-128). The nodata value need to be assigned to the pixels that are overlaid together (I mean 0 on top of the...

I'm making a plugin for Quantum GIS in python. I have a polygon layer and want to create a new feature. So far, I have this because I need a polygon geometry to add the feature: surface = QgsGeometry.fromPolygon (polygon)The problem is that I do not create a polygon. I have a list of points...

Google has continued to roll out 3D imagery, with over 50 new or updated areas so far in July. In addition, we saw indications that Google is interested in getting 3D imagery for Indian cities. Picturesque Lübeck, Germany, one of over 50 new areas of 3D this month. We have seen quite a lot of...

I have a point where the objcet is and another point for mylocation. I want to calculate the distance >> object_location>> mylocation>> mylocation.distance(location)0.13980702957351368But the result is wrong is there some different way with geodjango to calculate the distance between two...

what are the possibility of detecting PomPom Weed (Campuloclinium macrocephalum) using Landsat Images through ArcGIS 10? أكثر...

I have two Polygon Layers. Layer A are Districts of a City and Layer B are Blocks of a City. Currently i'm working with QGIS 2.6.1 and i don't have access to any other GIS. What i'm trying to do is: select Blocks in Layer B within (contain) a specific District in Layer A. I'm already able to...

In general, I really like the docking environment in ArcGIS 10. As I was showing off ArcGIS 10 to some of my end-users, I couldn't get the toolbar docked to the left of the map and to the right of the table of contents (TOC). Am I missing something here? I want to configure like ArcMap 9.3.1...

How to create simple and nice map locator icon in adobe illustrator cs6 أكثر...

Check the demo here: http://unirazz.com/cartodb/cartodb1.html After map is loaded, click on GO button to load cartodb layers. It works in latest browsers excepts IE8-10. If I reduce the length of request then it loads fine otherwise it failed. As per documentation I found that cartodb...