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I am trying to create a filter to show only specific features based on an attribute query within a WFS using QGIS. This works fine when using the standard WFS loader and creating a filter (based on the type "attribute"='value'). However this only works when the features are cached. I want to...

INTERGEO 2015, Stuttgart 15th to 17th Septembre. أكثر...

As we have discussed before, Google Earth shows different imagery at different zoom levels. When in the default view, the global image used is created from Landsat imagery. The landsat imagery, however, does not quite cover the whole globe. The oceans are excluded, as well as the poles, but most...

I know what is a polygon but when a polygon is said to be double digitized? أكثر...

as I am from an economics department, I am quite a beginner in QGIS. I read, that if I wanted to calculate the distance from a polygon to a Point, I should use the GRASS plugin "v.distance". Does anyone know how exactly the plugin calculates the distance? Let's say I want to know what's the...

I need a simple understanding of nontopological geometry. I am completely new in this area so please correct me if I am wrong. As far as I understand in topological geometry the object(say a line) can be bend but in nontopological geometry object can be only be moved but can not be changed...

I have multiple .qgs files in my C:\OSGeo4W64\apps\qgis\bin folder. With GetPrint and GetMap I am able to specify which one to use by MAP=, but with GetCapabilities it is not possible (results in error). Without specifying MAP=, GetCapabilities presents one of the .qgs-files. It seems to be the...

There are too many question on this issue, but unfortunately I couldn't get the solution. I have the following settings, var geographic = new OpenLayers.Projection("EPSG:4326"); // WGS 1984 var mercator = new OpenLayers.Projection("EPSG:900913"); // Spherical Mercator Projection var...

Whenever I try to export a map with the Google Maps plugin in the background, it exports but just exports to a blank document. When I turn the Plugin off so it is not in the background, it prints fine. Why is this? أكثر...

I have several shp files which are the components (or tiles) of a map, I have joint all these tiles together to have a large shp file. Then I realized some of the polygon is now split into 2 halves, as the upper part belongs to a tile, while the lower part belongs to another tile. This output...

Geographic coordinates quiz? Piece of cake. In theory you should score 10/10. In practice… We’ll see. This IS a test for intelligence rather than a knowledge. And of course if you had fun please check out our other GeoawesomeQuizzes! HOW MUCH DO YOU KNOW ABOUT GEOGRAPHIC COORDINATES? DID YOU...

السلام عليكم .. كيف يمكن الحصول على صورة جوية ذاة دقة عالية ....وهل توجد برامج مجانية مع السيريل نبر ...ارجو من لديه خبرة الاجابة ..مع فائق التقدير أكثر...

I have a problem with my GetFeatureInfo, because I can not get the values back at me as if they were variables. Anyone know any way? I researched and what I have seen is Geoserver modify the template (Content.ftl etc ...) But I would like to eliminate this as it has very little customization...

I'm trying and failing to do a calculation of the shortest distance for each point in a point geometry table (15000 records) to the nearest polygon edge in another table (170000 records). The end result I want is a distance for each point record to the nearest polygon record. My tables looks...

I have a bit of a challenge. I am obligated to use the local Danish tile provider Kortforsyning which provides terrain and air photo tiles in EPSG:25832 projection. We've are currently using OpenLayers in our apps using Kortforsyning tiles, but experiencing major memory leaks in tracking...

I'm trying to draw a line on layout view on ArcMap with C# and ArcObjects. I'm working on this sample. But I have some problems. 1.) This code for draw line on data view but I need to draw line on layout view(In box frame).I want to see properties of line element when I selected my line Item...

I have five input rasters and I'm using map algebra to find areas where all of them have a value over 75, areas where all of them are over 25, and areas where one or more are under 25. I can do this with: Con((Raster("RISK-CH.tif") > 74.9) & (Raster("RISK-MI.tif") > 74.9) &...

My question might be very simple. I want to create a single point (with xy coordinates) in a specific region, in a specific position. I don't want to do that with qgis I want to do that in R. Is there way? until now i had created a point with q and just copied the coordinates of it in R...

My problem touch with connecting layer with Yandex map to openlayers3. With OpenLayers2 this problem it was resolved, but for ol3 i don't find anything. Anybody can help me? أكثر...

Good day! Sorry for my bad Engllish. On the hole, I have OpenLayers OSM map with two WMS layers hotpoint and threat provided from GeoServer. I need to display attribute information from wms layers with popup or other appearing info table. I find this [ask][1], bud don't understand this work. My...