It has over 350 rock-solid vector and raster manipulation tools. Not awfully useful in cartographic design, GRASS GIS excels primarily as a free GIS software option for analysis, image processing, digital terrain manipulation, and statistics.
For a free, lightweight but easy to use GIS product, check out TdhGIS.com. It installs quickly, with an SQLite database, and provides many spatial analysis tools and some mapping functions. The displays can be exported to TdhCad, for full graphical editing. It imports Shapefiles and OSM data and runs on Linux and MS Windows.
Download Arcview 33 Full Version Free
* Completely free * Runs on Windows and Mac OS X * Source code download available (compile for Linux etc) * Sample map data (usually download from Census bureaux and map agencies) * Manuals, YouTube demonstration videos, Pinterest board
Does anyone whether any of these free programs can do things like converting a landxml file to a tin? What about tin to raster? These are the two most common tools available under the 3D Analyst set of tools in Arc that I use. Our company has 2 licenses and they are always in use. I would love it if one of these programs has these tools so that I can do these conversions whenever I need to, it would help me immensely. Does anyone know anything about this?
A great introductory resource on R for spatial data is provided by James Cheshire and myself and is free to download here: _Lovelace/publication/274697165_Spatial_data_visualisation_with_R/links/55254f220cf24fc7fdeecf7c.pdf
From among the 135 self-reported addresses, the E911 readdressing project resulted in the renumbering and renaming of 37 street addresses, 35 of which were successfully converted (95%). We compared the geocoding results of these 35 street addresses before and after conversion and found that TeleAtlas and ArcView/NAVTEQ successfully geocoded 32 and 28 addresses prior to conversion and 20 and 35 addresses after conversion, respectively. There were 16 addresses that ArcView/NAVTEQ and TeleAtlas both successfully geocoded before and after conversion. Comparing TeleAtlas and ArcView/NAVTEQ, the median distance of the positional errors (25th and 75th percentiles) for these 16 addresses were 350 (160, 888) meters and 205 (100, 578) meters before conversion and 419 (252, 749) meters and 19 (15, 53) meters after conversion, respectively. ArcView/NAVTEQ clearly performed better than TeleAtlas, especially after converting the addresses with the E911 data and ZP4 LACS. When we examined the positional accuracy of street addresses that were geocoded using ArcView/NAVTEQ but without E911 conversions, 12 of the 16 addresses (75%) were more than 100 meters from the GPS measurement, and 4 (25%) were geocoded more than 1000 meters from the true location.
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