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I googled everywhere but i didn't find how to correctly write *.json files for kartograph.py.Is there any documentation or at least some useful examples or tutorials?I wonder where to find shp files and how correctly write those *.json files. And i wonder what does mean this error when i use...

This video shows you how to save maps offline, so you can use Google Maps Android without access to wifi or a data plan. Its a great tool to use if you enjoy having that access to a map. A great feature is the auto deletion option, that keeps maps for up to 30 days ... أكثر...

How would I write an ALTER statement or otherwise to convert an existing imported data column from " wkb_geometry geometry(LineString,4326)" to a geom data type? I ask because I've moved to importing my data from geojson instead of shapefiles due to column length issues with shapefiles and...

I am running ArcMap 10.2 and have been trying to complete a fairly large viewshed analysis and have chosen to use the visibility tool in order to be able to produce an optional above-ground-level (AGL) layer which will be the focus of further analysis. The visibility is from a layer consisting...

I trying to draw lines along the path of the lanes on the map using openlayer3 but i am not getting any lines on the lanes there is no error in the developers console as well Rotation example I am newbie please say me what is wrong i not sure of the approach to do it...

I have multiple lidar data sets and I am trying to reproject them using liblas. They are missing the coordinate system in the header information so I assign them an SRS using las2las --a_srs: las2las -v input.las --a_srs EPSG:28992 The result is an updated header: Spatial Reference...

This is a general question that I am asking in the hopes of getting guidance in how to tackle the problem. Let's say I have a large data file -- say it is 100mb, geojson, say at the census-tract level with data bound for each shape. I need to do two things in the best way. I am open to...

In QGIS 2.6.1 in Ubuntu, I want to measure the density of block in this city (FYI my final aim is to measure the TOD level). I have the road network from French national IGN dataset BDTopo. I have measured the number of intersections using the QGIS tool "Intersection" by computing the...

Is there a way to make an offset to a polyline in ArcGIS? i.e. something like the command "Offset" from AutoCAD. https://www.youtube.com/watch?v=9A8CyoAMnjU I can't use the Buffer tool because I need to be able to calculate the length. Also the "New polyline" has to retain the...

I'm working with a group who wants polygon shapefiles showing the parcels that are part of their land holdings. They use Google Sheets to record the APN for each parcel. They want to convert the data to ArcMap to then generate shapefiles. Any ideas about the most efficient way of doing...

Geospatial Technology Innovations and Convergence. by*Steven Hagan, Vice President, Oracle أكثر...

I have a large amount of data records which have a postcode on them that I'm in the process of trying to visualise on an England map. The first map view I'm doing is naturally regional view. This is fairly trivial because the ONSPD (Ordnance Survey) postcode data has a Government regional...

I am trying to find bathymetry for Lake Victoria (or portions thereof). Any GIS format and almost any resolution will do. As a last resort a hydrographic chart will suffice. أكثر...

Part of our series on how to save time this holiday season with Google Maps. It’s crunch time. There are holiday parties to attend and last-minute gifts to be bought and wrapped. When the holidays are only days away even the small things can make a difference. So here’s another helpful trick...

I have a very large shapefile with over a million parcels within it. The problem I am having is that the polygons representing each parcel are very jagged. What I am looking for is a simple and fast way of essentially "simplifying" these polygons and thus getting cleaner lines out of things...

Keen to see K from space? See what satellites have have kindly revealed. أكثر...

I'm building a webGIS using leaflet library. Since the data visualization is for only a certain region, it seems that the broader leaflet base map looks a bit distracting. I wonder if there's a way to hide the redundant region. أكثر...

Why the operation myraster = raster("test.asc") does not load the associated projection file test.prj located in the same directory as test.asc? Does raster() need a specific argument? It seems impractical that I have to manually set the projection when it's already defined. أكثر...

I am new to ArcGIS and trying a few things.. I'm trying to read shape file(which is supply as an input) using c# and I want to generate a .pdf file which contains underlying metadata information (similar to the Identify tool) ? أكثر...

In this*video you will learn how to perform a post classification smoothing in ENVI. أكثر...