نتائج البحث

After changing the region in rest services the carousel of images has stopped rotating, the white banner at the top has disappeared and icons at the bottom have shifted.Seems like a page size setting for the homepage code has changed when the region changed.I pasted the original backed up HTML...

I am working in C++/QT4.5 with the qgis c++ api 2.8.2 I have a svg file that contains different form tag by Id When i want the first form i place the id name in the use xlink:href="#formname" .... Is it possible to change dynamically the formname with qgis or display another form with the...

I have a two tables containing (1) all parishes in Denmark (centroids) and (2) a road network of Denmark (OSM data). I am trying to find the nearest road for each parish centroid. To do this I'm running the following code. create table sogne_way as select distinct on(b.id) b.id as...

This has been bothering me for a very long time. No matter what I do, whenever I open ArcGIS Desktop, the environment settings for current and scratch workspaces revert to a path that is non-existent on my computer. The blurred portion of the path, should be my username, but it is someone...

I have a web application which doesn't connect to the internet. The application uses gwt-openlayers to display WMS layers and points on it. The users can define WMS layers on the UI interface by adding the url, the layer, and the projection code. The openlayers documentation says: By default...

I have been trying to orthorectify quick bird and worldview images using the supplied RPB file and my own DEm. The result i'm getting is an image exactly aligned with the original one but some 30km above(far from correct location) . tried it for almost 10 images, getting same results. Any idea...

[No message]

I have a method that does a simplify of geometries. I have used this common code since ArGIS 9.2 without issues and it still works fine in ArGIS 10.2.2. Recently I upgraded a project to 10.3.1 and the .Simplify on the topology will every know and again freeze for anything between 30s - 3...

I would like to learn ArcPy, but I do not know quite where to begin. Does anyone have any good advice on where I should start to learn ArcPy? أكثر...

A volcanologist with Geological Society of America, Dr. Ian Saginor, is using 3D printing to prepare people for volcanic eruptions. Through his Volcano Terrain Project, Saginor is creating miniature scale models of regions that are at risk. أكثر...

Teaching is one of those things I hate and love all at the same time. I taught the Intro to QGIS class this week for Georgia URISA. It doesn’t get taught as much as you think – a lot of times people still brush it off as “that other stuff that isn’t as good” so you have a bit of an uphill...

I have tried using postgis_tiger_geocoder extension for reverse geocoding and it just has the U.S related data(56 states or so) but I need to have few more countries like canada and few more. Is there an option to load canadian states and data in the tiger schema and make use of it. If yes...

I read that geodatabases offer a large character length of field information. How do I use a geodatabase to view a field within an excel spreadsheet with a large character length of text? أكثر...

I am developing an exercise on computing areas of polygons for a course in scientific computing that I teach. I'd like to have the students estimate the acreage burned in one of the fires in Washington state. I've downloaded a KML file which provides the perimeter of the current active fire...

I have a RGB raster tiled at 128x128.I am trying to clip from a POSTGIS raster using a polygon as follows: select ST_AsGDALRaster(rast,'GTiff') FROM (select st_union(st_clip(rast,geom)) as rast FROM scenes.rgb cross join ST_Transform(ST_GeomFromText('POLYGON((...

My study extent in central Iran straddles two UTM zones (39 and 40): I would like to create a user-defined CRS in Transverse Mercator projection with central meridian inside this area. Through Custom CRS>> Add new CRS, I try to add the following proj4 string: +proj=tmerc +lat_0=Latitude of...

I'm doing urban change prediction in Land Change Modeler (TerrSet software), and i can't run Transition Sub-Model. I don't know why, but I think it is because I have nodata value in Variable (slope image, elevation image, distance to roads) and I don't know how I can remove these values. I...

I can read the netCDF file data with netCDF-python or with gdalinfo, but I am unsure of the easiest way to get it into a PostGIS database. It would be really easy if I could convert the netCDF file to the shapefile format because using ogr2ogr is fairly straightforward. I started to used some...

Does anyone know of a way, when using the Node tool in QGIS to edit a polygon, to choose or toggle which feature (within the same layer) is being selected if they share a boundary? It seems to just select whichever feature is on higher order in the table... It's not an issue if the feature has...

I'm confused about the order of the lat/lon pairs when a CSW BBOX request is specified. On this Geoportal Server CSW page, there is a GetRecords example where clearly the ordering is (lon,lat): ows:BoundingBox -118.3 32.1 -87.1 45.2 but on this Data.gov example gist, it says...