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I'm creating a Processing algorithm that requires the user to input several parameters including an input layer and an output CRS. At present, the tool defaults to SRID 4326. I'd like for the CRS parameter to default to whatever layer is selected as the input layer. Is this possible? I don't...

I need some advice on choosing a GPS setup to map estuarine habitats in the field. Our SA estuaries are often very narrow (1 to 2 km wide) and habitats are small. We distinguish between supratidal salt marsh, intertidal salt marsh, reeds and sedges, among other habitats. Reeds and sedges...

I'm running QGIS 2.8 on a Ubuntu machine and for some reason I can't create nor run a script in the Function Editor. Everything of the Editor is deactivated. I guess it somehow a problem of permission rights as I couldn’t find any similar problem in WWW. Any advice? أكثر...

I just wanna read data from xml and on the basis of that data create a map. أكثر...

I have built a tool that allows my users to perform geocode requests against the World Geocoding Service provided from Esri. I would like to extend my tool to have an autocomplete feature, similar to how this can be achieved with the Autocomplete class from the Google Geocode API. Although...

I have the following files to work with: Stream network of a basin; Outlet points for each segment* of the network and Points which represent water withdrawals along of the stream, which are not located in the stream, but near of segments. *segment = a line with a start point and an outlet...

So I am interested in knowing how far along a polyline a given point sits. Python's shapely package has a method to do such a thing, see the below code: from shapely.geometry import LineStringip = LineString([(0, 0), (0, 1), (1, 1)]).interpolate(1.5)print LineString([(0, 0), (0, 1), (1...

I'm performing a fairly routine task, which is to add height information (from a 50m DEM) to survey polygons to work out mean height, as well as max and min. I've noticed that zonal statistics (Spatial Analyst) is very slow, and depending on the raster analysis settings, can miss out polygons...

Is there any file that contains already made shield images that are frequently used and comes with the installation of TileMill, or is there any page I can download it from. Link would be appreiciated. Specifically, I need some already made images of shields for highway labels and house numbers...

I am using ArcGIS 10.2. I have a vector layer with points, which represent houses and a raster layer with values of 0 or 1, according to a certain threshold. In a buffer of 5 km around each of these houses I want to calculate the average number of raster points above a certain thresholds...

As part of the validation for parameters of a Python toolbox, I need to check if the text in parameter #1 is exists in a layer in a MXD file selected as parameter #2. Currently, I use this code in updateMessages: mxd = arcpy.mapping.MapDocument(parameters[2].valueAsText)layer =...

I can make a bitmap file from tiles that I receive from Google map using X_Tile,Y_Tile and Google map zoom parameters successfully.First I use a vector layer to find map extent in UTM,so I have minimumX,Y and Maximum X,Y and also UTM zone.Using these parameters I achieve minimum...

I've been looking for Indonesia shapefile for level 3 or more administrative boundary and I still haven't found it yet.I found in (gadm.org) but it only level 2.So anyone know where I could find it?I would prefer a single Indonesia shapefile instead of downloading each province shapefile one by...

I just solved a problem with missing libraries blocking use of ogrinfo and ogr2ogr, only to find that these utilities are garbled in one more way: whenever I run any of these, I get following error (this is for ogrinfo, for ogr2ogr it's analogical): ERROR 1: ogrinfo was compiled against GDAL...

Is it possible to style a halo around text that has a square shape instead of a circle? If not, what are the alternatives to make a "halo" around number angular, in a shape of a square? Software I am using is TILEMILL. On this picture below i posted, you can see blue circle around number which...

please help me, i'm new in gis 1) i have أكثر...

I want to create a custom import routine that can read/import an sdr file. The sdr files will contain information the surveyor has picked up when completing an as-built. The data will likely contain info on sewer lines and manholes etc... I need to read the file and convert it to more readable...

I use QGIS 2.1.0 and Mac OS 10.7.5. If I update to OS Yosemite or El Capitan when it's released this fall; do I risk compatibility problems with my version of QGIS? Or if I update to the newest version of QGIS; do I risk compatibility problems with my present projects? أكثر...

I have developed a GIS web application using OpenGeoSuite for Electricity Asset Management System. It uses Geoserver, PostGIS/PostgreSQL, PHP, GeoExplorer for normal functioning. However, I need to deploy that in Apache Tomcat server as a war file. Is it required to re-do the app in Java and if...

In fact i am asking for the method and the data needed for determining school catchment area.Example is http://www.qgso.qld.gov.au/maps/edmap/. Probable Prerequisites: Catchment boundary must not cross buildings and should follow transport network. There not be any un-allocated area (void)...