نتائج البحث

حمل من هنا

حمل من هنا

حمل من هنا

حمل من هنا

حمل من هنا

حمل من هنا

Leaves change from green to orange and brown across the United States and Canada. أكثر...

I want to be able to check if a layer is visible in the legend and if so then perform another operation - in python. I am using ArcGIS 10.2 for Desktop. I cannot find anywhere how to check if a layer is visible or not in the legend. أكثر...

How can I read/wrap a JPG image without any embedded projection/coordinate system to an autoreferenced GEOTIFF with Mercator or similar coordinate system using GDAL? The image is 500x500 px and I know it uses a polar stereographic projection with center at 40 أكثر...

Imagine the possibilities if a fully interactive and mathematical correct 3D model of ground infrastructure were available on your computer. Aero3dpro is cutting edge technology that offers incredible advantages over standard orthophotographs and other mapping tools. أكثر...

A horizontal datum is a collection of specific points on the Earth’s surface that have been accurately identified according to their precise northerly or southerly location (latitude) and easterly or westerly location (longitude). To create the network of horizontal positions, surveyors marked...

I would like to know the azimuth and tilt of a polygon / surface in a PostGIS database. The azimuth should be given e.g. from 0° to 360° degrees. The altitude should be between 0° to 90°. An example result table: sid |*azimuth | tilt |*geom--------------------------- 0 | 0 | 0 | ... 1...

Currently I fetch polygons from a database table using ST_AsText(). The results are in text format, like this: POLYGON((84 104,212 48,321 122,243 179,275 238,131 240,84 104))I am not quite sure if ST_AsText() and string manipulation is the way to go for good performance. Is there another way to...

A major challenge for infrastructure companies is mapping infrastructure which is obscured by walls, soil or other materials For example, detecting underground infrastructure is a remote-sensing challenge that is seeing rapid technological progress.* Researchers at MIT have developed a prototype...

I am using a .csv file with separate date and time columns. When I export the data as a shapefile all the time data changes to 12:00AM I know there have been other threads about this problem but I can't seem to tease out what the solution is. I know there is a way to retain the time as I have...

I have been experimenting with using a plugin for QGIS called qgis2theejs. It exports GIS data to 3D interactive information for the web browser (works with most modern web browsers). Lots of cool examples out there. The nice part about this technology is that 3D can be shown in browsers without...

I'd like to us the arcpy.GANeighborhoodSelection_ga in a loop where the point coords would come from a different source. What I tried already: If I define the coords, it works: pointcoord = "689383.6885 3973775.2178" arcpy.GANeighborhoodSelection_ga(inFile2, "neighbor", pointcoord, "1"...

How to snap a line end node to another line segment when there's no vertex you could snap to on the line segment within a given snapping tolerance? For example, we have an unconnected line that ends 0,5 meters away from another line segment. We set our threshold to 1 m, so the line we wanna snap...

I have a postgis raster table with the following columns: rid, rast, year, plant I created a wms layer in geoserver pointing to the table and successfully serve out the raster when the table only has one raster in it (one plant). The url used to do this looks like so...

lets say i have a point on the map New York, NY, USA Latitude: 40.712784 | Longitude: -74.005941 If i move 10 metres north in 20 seconds ,can i use the coordinates i have to calculate the new coordinates?. أكثر...