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Here’s the problem with laser scanners – they are dumb, or as they point out in this article from the UK, “Whilst the point cloud gives a dimensionally-accurate 3D representation,... Click Title to Continue Reading... أكثر...

I am trying to use ST_Difference to create a set of polygons (processing.trimmedparcelsnew) that do not contain any of the area covered by another set of polygons (test.single_geometry_1) using PostGis 2.1 (and Postgres SQL 9.3). Here is my query: CREATE TABLE processing.trimmedparcelsnew...

I am very much curious to learn new technologies related to GIS and passionate to develop new things such as Mapbox geojs, Urban Engines & city mapper.I found George Manson University offers best courses that suites for my passion. أكثر...

I am trying to Georeference the postal codes I have and they are all converting in to same Longitude and latitude . Any chance of getting the real data ? Thanks أكثر...

I would like to eliminate overlapping polygons from a table that is often updated with new polygons, but only if a certain attribute has a higher value. If this higher-priority polygon only partly overlaps the lower-priority polygon, only delete the part of the lower-priority polygon that...

I've been experiencing some unwanted results when trying to export stacked text to CAD using ArcGIS 10.2 for desktop. With the Export to CAD tool I can easily export polygons. However, I'm also trying to export the 'stacked text' labels inside those polygons.With the Feature to Point tool I then...

This is my first time trying to convert a VMAP to a shapefile and the examples online aren't as straightforward to me. Any guidance is appreciated. أكثر...

Use Feature Class "Name" from Iterate Feature Classes to Calculate Field with Model B My goal is to create shapefile that contains merged feature classes from a geodatabase. I would like for there to be a new field in the resulting shapefile that contains the name of the original feature class...

Currently my rules for styling point Icons bound to scale look like this: :mark{ mark: url("file:./icon.svg"); mark-mime: "image/svg+xml";}[atrib='xyz'][@scale > 600 ][@scale < 1000] { mark-size:10;}[atrib='xyz'][@scale > 400 ][@scale < 600] { mark-size:60;}[atrib='xyz'][@scale < 400] {...

Could someone help me translating this to an overpass query for the command line? osmfilter ac.o5m \ --keep-ways="highway=motorway =motorway_link =trunk =trunk_link =primary =primary_link \ =secondary =secondary_link =residential =residential_link =service =tertiary \...

NLCD landcover rasters downloaded from MRLC have default legends and symbology as shown here: http://www.mrlc.gov/nlcd11_leg.php However, when I extract the raster through a mask, or reproject the raster, or do similar geoprocessing, the default symbology is replaced by random colors. How do I...

I want to have a selection of parcels that is dissolved by land owner and within 3 miles of a polyline. If the same owner owns parcels on opposite sides of a road (within 100 feet or so), I want the parcel to be a multipart. However, I don't want to have multiparts for parcels with the same...

I have an attribute table of about 2.5 million rows and 10 columns that I am trying to export as dbf or text file but i keep getting the error message, "An error occurred exporting the table, a column was specified that does not exist". How do i resolve this please? أكثر...

I have a CartoDB map here: Link: https://dms2203.cartodb.com/viz/78db6c02-3148-11e5-a42f-0e018d66dc29/public_map I'm trying to find the distance of the points to the polygon. If the points are inside, they should have a value of 0. Basically, I'm looking for Near (Analysis) from ArcGIS equiv...

I work with a local italian projection (EPSG:3003 Monte Mario Italy zone 1) and I had loaded this projection in my project for evitate to reproject all of my data. I had created the tile pyramid with the last version of gdal2tiles (the version shipped with the last version of maptiler open...

Bonjour, Je voudrais savoir ci c'est possible exploiter des fichiers MAJIC (obtenus par la DGFIP) sans avoir à disposition les fichiers EDIGEO (le cadastre de la commune n أكثر...

by Virginia Thompson A view from the Heritage Rail Trail County Park. My husband is a huge fan of biking on rail-trails created by the conversion of unused railroad rights-of-way.* Within the past year alone, he has ridden on many trails in the Philadelphia suburbs, as well as throughout the...

I would like to customise the visibility of different layers on a CartoDB webmap so that they appear and disappear at distinct zoom levels. How is this achieved? أكثر...

I want to understand how I can learn the gis server type of a certain link. In instance I want to know which type of server is being used for http://barajlar.dsi.gov.tr/ web site. Related server links are http://tilesrv01.dsi.gov.tr/ and spatialsrv01.dsi.gov.tr. Are they using geoserver...

I am building a multiple chloropleth map using v2.2.1 of Mapbox.js with featureLayer. Now I would like to add tooltips with custom content on hover event. This code is working well to set up the featurelayer and add styles to each layer: _this.orgLayer = L.mapbox.featureLayer(null, {...