Hot answers tagged free-data
The ISO 3166-1 official site is probably the most updated source for the two-letter codes. Unfortunately, they don't have the alpha-3 online, quoting their site: Where can I find the ISO 3166-1 alpha-3 country code for free download on the ISO 3166/MA Website? Nowhere. The alpha-3 code is not made available free of charge. You can buy the ...
Geospatial Analysis - A Comprehensive Guide has a free web version.
Courtesy of Slashgeo: Hundreds of Free Geospatial PDF Books from the National Academies Press: Last weekend, Slashdot informed us The National Academies Press are offering all their books, over 4,000 of them, for free in pdf format. With searches, you find plenty of geospatial-related books, for instance: Geospatial: 140 books GIS: 196 books ...
I am afraid I disagree with you. I think the ArcGIS help/forums/blogs/vids/etc give a great perspective on what you can achieve with the ArcGIS range of products. Your not limited to Python to manipulate your spatial data. You can still use VBA at 931 and 10 to access the ArcObjects library, or you could take it a step further and use .NET to do all sorts ...
If you want to periodically update your list, you could scrape one of the sources and parse its results into a useful format. I've done so here for converting the Wikipedia country code list into a CSV: import csv import urllib2 from BeautifulSoup import BeautifulSoup opener = urllib2.build_opener() opener.addheaders = [('User-agent', 'Mozilla/5.0')] url ...
ESRI has a lot of technical papers and books specific to their software availible here. The documents are in pdf format and availible for download.
A practical guide to geostatistical mapping: http://www.lulu.com/product/paperback/a-practical-guide-to-geostatistical-mapping/6379056 And of course many open source gis programs have their manuals online, eg: http://www.grassbook.org/ http://sourceforge.net/projects/saga-gis/files/SAGA%20-%20Documentation/SAGA%202%20User%20Guide/
Google Books with the "full view" filter applied lists some 38,000 titles for "geographic information systems", 31k if you leave out magazines. Of course there's a lot of irrelevant stuff in there, but with judicious use of extra keywords good ones can be pulled out. When you find good ones they can be saved in "my library", which can have various sections ...
I just came across the Quantitative Methods Research Group (QMRG) of the Royal Geographical Society which has a series of short methods articles (CATMOG). These are all papers detailing some type of statistical analysis of geographic data (although many don't have a strict relationship to spatial data). From the ones I've skimmed through and read, they are ...
If you go to the Earth Explorer web site you can download several DEMs. For Nepal they have the 30m AsterGDEM and the 90m Void Filled SRTM. The 1 arc second (30m) SRTM is not available yet (12/12/2014) but I believe it should be ready in the near future
You can find all (most?) of the two and three letter codes in http://download.geonames.org/export/dump/countryInfo.txt - it also has ISO numeric and fips codes and other country info.
Have a look at this web site.
http://www.naturalearthdata.com/ has boundaries and stuff but it is all on a pretty low resolution. http://www.weogeo.com/ has several free datasets including openstreet map, as well some for pay.
I think this is a very interesting question. The only problem with it I think is the tags. Most people loving the alternatives will miss this one since it is not tagged "open-source" or anything else that broaden the audience. I am not experienced enough to give a give an answer from very many aspects, but... I did my first things in gis in Arcview 3.x ...
NERC & FERC are going to be your best bets in getting correct data. http://www.ferc.gov/ http://www.nerc.com Not only will you most likely have to pay for the data, but I don't believe you can have access without certifications and clearances (national security threats, etc). Both of the resources above should help you find what you need to do to get ...
http://www.naturalearthdata.com/downloads/ has 1:50M rasters of the Ocean Bottom (http://www.naturalearthdata.com/downloads/50m-raster-data/). All their data is public domain so there are no worries about licenses.
These probably aren't exactly the droids you're looking for, but the ASTER DEM is constructed using stereographic correlation. Hirano et al describe the process for creating the DEM using stereo pairs. The only problem with ASTER is that its stereographic capabilities come from specific off-nadir tasked data collection. So unless you want to shell out big ...
Found this collection of links with some archaeological datasets. It's just for UK though. Here's a teaser ARCHAEOLOGICAL DATA Source – BAA, Oxford Archaeology and Wessex Archaeology. Data – Archaeological data for Stansted and Heathrow Airports. Excavations by Framework Archaeology 1998 to 2004 Format – Various, including ESRI format. Licence – Creative ...
A shapefile of the TZ timezones of the United States Last data update: September 30, 2012 The tz_us shapefile captures the boundaries of the TZ timezones of the United States, as of TZ 2012c. The geometries are entirely derived from the countyp020p and timeznp020 shapefiles provided by the National Atlas. All the TZ timezones of United States ...
The USDA Data Gateway has layers available for 1:12k quad footprints. Not sure if you can fetch the whole U.S. or not, but you can get them by state. Also, you can drag a custom AOI onto the map and get some pretty big chunks it looks like.
Depending on your level of accuracy I would suggest the following: Low level Accuracy Use QGIS for Android (free and has a gps toolbar) along with your tablet or handheld native gps High Level Accuracy Use QGIS for Android along with your vendor gps
This is not generally free data. Two providers I've used are Platts and Ventyx. Costs are roughly the same (not cheap!) and I've found the Ventyx stuff to be more detailed though Platts has been better on occasion.
i dont think info like this in free GIS sources existe. you can try to use arcscan to scan a map and make it a shp file. http://gis.cbs.gov.il/shnaton57/all_israel-2006.pdf we did something like this to a map of tel aviv in a gis-database course in baraln
"...Fill Color window to adjust the colors I need It opens in CMYK and I need to Change it to RGB" Funny, I learnt how to do this last week. open ArcMap --> add a layer --> go to colour pallete Change the CYMK to RGB Save the document to Normal.mxt under your doc & settings (under the ESRI folder) Close and re-open ArcMap --> Will always be ...
Carta topográfica escala 1:50 000 Three major scales are available: 1:1,000,000; 1:250,000 and 1:50,000. The DRG maps in the scale of 1:50,000 are being issued and as of today (August 2008) about 85% of the country is available.. They have the same format characteristics as the 1:250,000 ones. The 1:50,000 maps have shading to help in the terrain ...
CleanTopo2 looks promising, and is public domain. CleanTOPO2 is a touched up and generalized version of SRTM30 Plus, a public domain dataset that combines sea floor and land elevation data of the entire world. CleanTOPO2 comes in three versions tailored to meet different design and production needs. All versions are 16-bit grayscale TIF files ...
The NOAA has an extensive collection of bathymetric data sources. I assume you are referring to bathymetric ocean data?
For ocean bottom basemap (no contours). I recently noticed the ocean basemap release. arcgisonline ocean (rest endpoint) There are some pointers for using it with other basemap extents and also, more information and several other good links for oceanic data (including disputed maritime boundaries) on the esri blog archives. Esri blog
[Rewritten] For satellite imagery, the USGS Earth Resources Observation and Science Center is a good place to start looking. From that page, there are two special web portals you can use to search for satellite image tiles---Glovis and EarthExplorer. While they're similar, I tend to use Glovis for ASTER and EarthExplorer for Landsat. But I believe they are ...
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