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The project for my class involves downloading a zip (with sharefile documents) + csv file which provide the data and a basic map of Manhattan. As per instructions, I computed a new field and created a map based on it. Whenever I try to save this file as a shapefile, it only shows the information...

I'm having some problems getting a full features (roads, rivers, buildings, parks, etc) map to show on TileMill. The steps I taken so far: Mounted a PG9.4 with Postgis 2.1 database Downloaded the caribbean PBF from geofabrik Imported the data using osm2psql (default stylesheet) In TileMill I...

We’re hosting Code & Coffee this Sunday as part of DCFemTech’s Tour de Code! Join us at the Mapbox Garage (1714 14th St Rear Entrance) this Sunday, October 18th, from 2 - 5pm for an afternoon of coding & collaboration. This is a fun, informal way to learn, code and work on projects with other...

Dear GIS Cloud Community! A video recording of our last week’s webinar is now available online.*Igor Farka أكثر...

We are making our data team’s starter guide Mapping with OpenStreetMap available to anybody under an open CC0 license. Read it to get started mapping, review our mapping best practices or just copy content for your own documentation work. The guide is available in English and in Spanish. We...

In recent years, Denmark has experienced a number of sudden, extreme rainfall events. These events, known as cloudbursts, overwhelm stormwater systems and cause flood damage to homes and businesses. One way to help municipalities prepare for the next cloudburst is to map the “bluespots” in the...

I have a dataset where multiple attributes need to be shown with the same symbol. I can achieve this using multiple 'PropertyIsEqualTo' operators nested within 'Or' logical operators, see below example; CURRENT_ST AB-LOC CURRENT_ST ABD This...

I have a few thousand polylines (shapefile) that have "Name" as one of the attributes and corresponding polygons (feature class within a GDB) that contain those polylines within the polygon boundary. I need to attribute polygons based on the name of a polyline that each polygon contains. Similar...

I have stacked layer (from ERDAS) of Landsat 1-5, & 7 bands. I want each of band separately... How can i do that? أكثر...

I've tried to incorporate this sample that shows how to switch base layers into a page I am working on: http://openlayers.org/en/v3.10.1/examples/bing-maps.html When I try to load my page with the code included I get this error: Uncaught Error: addEventListener and attachEvent are...

I want to crowdsource shapes on a map for an organization I'm working with. It seems like Leaflet Draw something along the lines of the Mapping Neighborhoods projects. As someone with some experience both working with spatial databases, and making Leaflet maps, I was wondering if there's a...

This also might be of interest here, as it is an important data source: When does Sentinel-2A finally become operational and deliver images regularly? I tried to find information on that, but somehow there was never a date mentioned. Is it still unclear? أكثر...

Salut à tous, j'ai téléchargé et installé le pluging et le webclient (version 2.10.3). J'ai également suivi le guide (disponible à l'adresse http://docs.3liz.com/fr/admin_guide/installation/windows.html) pour installer QGIS server. Le problème c'est que je vois bien le projet dans le...

I'm writing a QGIS plugin and I need to create a raster layer as the average of other rasters. How can I do it? I have tried to use gdal_calc.py through os.system, something like: cmd = 'gdal_calc.py -A first_layer.tif -B second_layer.tif --outfile=AVG.tif...

I get the error message: Export to vector file failed.Error: creation of layer failed (OGR error:Failed to open Shapefile `kjh.shp'.) Using CRS WGS 84. Funny thing is the method worked perfectly several times then I got the error message. When I went back to the first kml that converted before...

I am importing a large number of X,Y coordinates into arcMap from an Excel spreadsheet. These points represent animal locations so many of them are very close together. When I zoom in to look at a set of points up close the points appear to be on a grid with many points stacked on top of each...

I have ~100 .tif files, making 16GBJust dropping them into QGIS, shows them as "layers" , but places every correcty , assembling a large map. The problem is that any panning, zooming causes a full reload (page goes white, then loads images) , browsing is slow. Is there something I do wrong ...

I created tile/pyramid structure on my tif file usinggdal_retile.py. How can I use it in mapserver-wcs-mapfile?regards أكثر...

I have a series of polylines, these represent various linear landscape features (Roads, hedges,rivers). I need to convert these to a series of points equally spaced (so hedges a point every 2m, a river a point every 5m etc) in order to model them in a 3D programme. How do I do this - I have...

I have about 75 million records in a SQL Server 2008 R2 Express database. Each is a lat long corresponding to some value. The table has geography column. I am trying to find one nearest neighbor for a given latitude longitude (point). I already have a query with spatial index in place. But...