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Spatial Query: The query from "LayerName" using "FID" in field not possible In QGIS Wien, I am performing a spatial query with two layers (points and buffer areas) and receive the following error when creating a new layer with intersecting features: The query from "LayerName" using "FID" in...

I have many different (lat,long data) points of world associated with unique place names and corresponding each point specific image or video data. Now I want to create an html file where if user click on each point they can see that specific image or video in the pop-up/infowindow. Previously I...

Image: http://i71.fastpic.ru/big/2015/0708/ba/600ad53728499da920b0a976af4549ba.jpg * Stock Images - Corporate Business * 17 jpg l ~4500x3400 l... أكثر...

Hello I want to calculate "NDVI" index and the area under vegetation. After NDVI calculation i don't know how to obtain each raster point value. If... أكثر...

Image: http://i70.fastpic.ru/big/2015/0708/fb/c36e0cd46443fd39ea61e25a0e91d9fb.jpg * Stock - Corporate background Vectors * 21 eps files l jpg... أكثر...

Image: http://i69.fastpic.ru/big/2015/0708/11/98e2b92d11120dca8149f9490042cc11.jpg * Stock 3D isolated Empty black bookshelf vectors* 15 eps files ... أكثر...

Hi guys, I am trying to display a map (that i generated through the desktop 'Example3' app) in a TiledSFMap control. The map shows fine in SFMap, but i need to get the 'clicked' event, so i need TiledSFMap to link to a Handler. The 'world' map shows fi... أكثر...

I'm working with ArcGis 10.2.5 Runtime SDK for .Net. I have created a PictureMarkerSymbol that shows data of an area of interest in miles, and the question is, how can i fit the symbol size to a given distance? I tried with GeodesicBuffer with point geometry, but instead of resize the...

I've got a vector of Points, Polygons, Lines. And I'm trying to convert the points into a GML file like a Web Feature Service. I've been doing some reading but cant find any methods that can do this? I'm coding in C++ with QT Using Gdal Libaries أكثر...

After running osm2po on a pbf file for Europe I am importing the resulting files into a PostGIS and pgRouting enabled database. During the import psql it reporting many encoding errors because the WIN1252 found encoding has no equivalent in UTF8. How can I solve that issue? The initial pbf...

I have this image that I want to convert it to GeoJSON. And I have this World File: 0.0388048118 0.0 0.0 -0.0387897595 697054.11331 4458020.56656 When I try to run the gdal_polygonize command from terminal, it pixelizes the json, but If I try to run it without the World File it works...

I'm looking to start using QGIS for production of basemaps, co-ordinate points (to set out 30x30 or 20x20 grids) and to then overlay the geophysical results (usually raster images) on top of the basemap and grid layout. Currently my company has been using ArcMap (part of ArcGIS) but we only have...

I'm interested in finding GIS data for ports in California. I have a point layer but I'm hoping to find polygons for each port. Surprisingly this is proving to be more difficult than first expected.Thanks in advance Best أكثر...

for example, i have two fields:1 - a, b, c2 - X, Y, Z and i want to do like this: a - square, b - circle, c - pointX - blue, Y - red, Z - pink and when i have a and Y - it whould be red square. أكثر...

The Canada Centre for Mapping and Earth Observation (formerly Canada Centre for Remote Sensing) is pleased to offer this free tutorial on remote sensing technology and its applications. This interactive module is intended as an overview at a senior high school or early university level and...

Over the last few posts we have been having a look at Google Earth’s new layers that make up the new ‘Voyager’ layer: ‘Satellite imagery updates’ layer ‘Earth View landscapes’ layer ‘Street View highlights’ layer ‘3D cities’ layer Today, we would like to suggest a new layer to Google that would...

Image: http://i71.fastpic.ru/big/2015/0708/9b/5a55db14ae5e3c0dcf7a2e5a5791759b.jpg (http://pxhst.co/pictures/3564836) *Scramble Magazine - July... أكثر...

Image: http://i69.fastpic.ru/big/2015/0708/bf/87f21696d342e8b7c55c170ea562a8bf.jpg (http://pxhst.co/pictures/3455748) *Allen's Astrophysical... أكثر...

Image: http://i69.fastpic.ru/big/2015/0708/29/5faf52d4508eea831c56fa2a4eb81429.jpg (http://pxhst.co/pictures/3564395) *Laptop Mockups 11911910* PSD... أكثر...

I've created a GeoProcessing task that allows users to select a series of variables (raster files) from a choice list. The results of which are sent into a raster calculation process. Unfortunately the variable names are very long (see below) and I'd like to be able to use an abbreviated...