Tag Info

New answers tagged

0

The EPA has a power profiler service that allows you to find out "how clean" the power you are getting is. It profiles the percent of power coming from each type of power generation per zip code. Unfortunately, I cannot find any place to get the data for all zip codes at once. Alternatively, there are downloadable databases that profile power subregions and ...


3

Ok I know of two products that may help you. This site gives all the grunt work for the hydrologiclly correct layers you would require to conduct such an analysis. The Open-source Water Observation and Information System (WOIS) is now active in Africa. Is is compiled using open-source GIS (link) and includes modules for TSS. It is not a project for ...


0

I am not sure if you have check this out ? http://www.diva-gis.org/ ? http://www.diva-gis.org/gdata How about this ? http://www.infrastructureafrica.org/documents/tools/list/arcgis-shape-files This might help you to browse around in Africa. http://wikimapia.org/#lang=en&lat=12.983148&lon=9.755859&z=3&m=b&search=Africa


1

Before anything else, one must try to understand why ArcGIS imports a field as a string type instead of a numerical / double data type. I found that even if your cell (in Excel) is blank, if it has "spaces" inside (like when you press the spacebar), ArcGIS will interpret these as characters. If you remove them, you will see that they will now register as ...


0

Just found one right after I posted this. http://www.blm.gov/nm/st/en/prog/more/geographic_sciences/spatial_data_metadata.html Followed the link for "Survey LandNet" which is a download for very detailed survey data.


3

What you're after is a Digital Elevation Model (DEM) (wikipedia) which represents surface elevation as a single band raster (i.e. your 2D height map). One starting point for getting DEM data is the USGS EarthExplorer data portal (http://earthexplorer.usgs.gov/) which allows you to select a region and search for data. If you use the map to zoom to Istanbul ...


2

ASTER and MODIS both have global coverage and are suited for larger scale flood analysis. ASTER has a temporal resolution of 16 days and contains 14 spectral bands in VNIR (15m), SWIR (30m) and TIR (90m). Note that ASTER SWIR data acquired from late April 2008 to the present exhibit anomalous saturation of values and anomalous striping. MODIS has a higher ...


0

You will likely encounter difficulties obtaining this information due to security concerns. I was looking for some information from the national dam inventory. At the time, the information was on a public facing site but required an ACOE account to access it. I also recall reading a fairly recent article about the NID being hacked, possibly by a foreign ...


0

Just to add the National Historical Geographic Information System (NHGIS) to the list. It provides, free of charge, aggregate census data and GIS-compatible boundary files for the United States, currently between 1790 and 2012. For Data availability see here.


1

You can get block and block group census data at: http://www.census.gov/2010census/popmap/ Have to dig into the system a bit, but good data available.


0

If you are happy with the resolution provided by the GADM database, then you can easily download that data using the convenience function raster::getData(). (Do note: In addition to loading US county-level data as a SpatialPolygonsDataFrame to the current R session, the code below will also save the data for future use to a file named USA_adm2.Rdata and ...


1

If you mean update a field in multiple selected records (rows), you can do that in Field Calculator. If you have selected records, Field Calculator will work on just those records. To keep the existing values and add '.bus 332', in the MYFIELD = box, you can use something like MYFIELD & ".bus 332", where MYFIELD is your field name. Note, this works on ...


3

Why not just use county shapefiles from the Census Bureau? The Census recognizes those independent Virginia cities as both cities and as independent counties for the purposes of geographic distinction. Here is a list of the areas designated at the county level by the Census Bureau for the state of Virginia. You can find shapefiles for all counties here.


5

It's probably easiest for you to create your own hexagonal grid shapefile. Many GIS have built-in tools for creating hexagonal grids of any desired resolution and orientation. For example, in the cross-platform and open-source GIS Whitebox GAT, for which I am a developer, you can use the Create Hexagonal Vector Grid tool to create a hex-grid shapefile for ...


2

This is probabaly not the answer you are looking for, but here it is: You won't find them, since no one (not even the Postal Department) has Authentic Boundaries. Pin codes in India are a way of indexing Post Offices. Multiple Post Offices can have one pin code, and one Post Office can deliver to Multiple Pincodes. It's a Myth that there is such a thing ...


1

The NSF OpenTopography Facility has some excellent resources (software descriptions and tutorials including videos) and an abundance of freely available LiDAR data (both LAS point clouds and interpolated grids) to use. Here is a link: http://www.opentopography.org/ Downloading the data requires registration but it is well worth the effort.


1

Not specifically an online training but I took the Leveraging Imagery and Raster Data in ArcGIS full day technical seminar offered at this year ESRI Conferences which was pretty good. Among other things is focuses on: Efficient management of imagery and LiDAR using mosaic dataset Tips, tricks and best practices for managing imagery & LiDAR on an ...


0

What your looking at doing is to: Reclassify your Raster into categories (i.e. 0-20, 20-40, 40-60, 60+) http://webhelp.esri.com/arcgisdesktop/9.2/index.cfm?id=4804&pid=4803&topicname=Understanding_reclassification Convert Raster to Vector Clip the output with the polygon shapefile of India. As John Barca mentioned lots of tools. What ...


1

You can try free and open OpenStreetMap data. For NYC-data in various formats see this link: http://download.geofabrik.de/north-america/us/new-york.html. However, keep in mind that OSM data is gathered by thousands of volunteers around the world and there is no guarantee of completeness and thematic accuracy but the data is very good for larger and populous ...


0

I just read an article about a new... app? created by the USGS, called the Historical Topographic Map Explorer. You can search or pan, click on the map, and it will show a timeline at the bottom listing the date of all available maps. The oldest for Miami seems to be 1950 though. Another source mentioned in several answers elsewhere on this site is the ...


2

A quick search for restaurant POI files turns this up: http://poidirectory.com/poifiles/united_states/restaurants/Vegan-US.html


0

FAO uses a lot the GAUL dataset which contains shapefiles at level 0 (country), 1 and 2. Metadata information are available here: http://www.fao.org/geonetwork/srv/en/main.home?uuid=f7e7adb0-88fd-11da-a88f-000d939bc5d8 Access constraints requires "Formal permission to do something"


2

As PolyGo and Brad noted, StackExchange does not host data itself. For a global dataset of inland waterways, SRTM may be the best source readily available. Have you looked at a description of the data. It is actually quite good resolution considering the extent. If you are interested in coastlines and will be working at various scales I also recommend ...


1

I'm going to answer the exact question you asked. If that isn't what you really meant, please update your question. Where from your website can I access worldwide vector water body shapefiles that have better resolution than the generic SRTM 90m data? You can't. This website (gis.stackexchange.com) is a Q&A site (per PolyGeo's comment on your ...


1

I doubt the data is readily available but since you specifically mention Discworld, there is an iOS app for the map of Ankh-Morpork which would have in in-game coordinate system and could thus be projected. The Disc would be particularly difficult to map as you would have to write an entire spatial reference specifically for it that instead of a spheroid ...


3

Two other US government sites I use that provide similar (and in some cases duplicate I believe) datasets as those found on the National Atlas are: USGS Earth Explorer: http://earthexplorer.usgs.gov/ USDA Geospatial Data Gateway: http://datagateway.nrcs.usda.gov/


2

The Census Bureau provides this type of information. However, the amount of specificity you are asking about is more than what they are willing to provide (for privacy reasons). The closest table is B27015 which covers general insurance status by household income category at the Census Tract level. Oh, and for reference, the Census Tract level is the lowest ...


1

This site looks like it's got some unique data as well: http://www.naturalearthdata.com/


6

I just checked my old National Atlas bookmark and was redirected not to the National Map Viewer, but to the National Map's Small Scale data page. There are 197 datasets available for download there, to my eyes it looks like it's the same data that was available at the old National Atlas page and they just moved it to the new URL. Are you not being forwarded ...


3

May I suggest the Census Bureau as one of the options? You can access ftp sites of the available shapefiles in any of three ftp sites: ftp://ftp.census.gov/geo/ http://www2.census.gov/geo/ ftp://ftp2.census.gov/geo/


2

The only area in the US I could find is based in California by the Healthcare Workforce Development Division (HWDD). They collect GIS data in terms of: Medical Service Study Areas Health Professional Shortage Areas Medically Underserved Areas / Medically Underserved Population And other miscellaneous data The site contains shapefiles, PDF maps and Excel ...


5

I found a way using purely Python to get the coordinates for tweets using a word filter. It doesn't seem like many people include location with their tweets. This might not be what you're after either because this is live streaming data. You can test it by putting a unique filter word and then tweeting that word from your Twitter account. You will see your ...


1

Im not sure I understand your question. But it made me think of this fictitious islands and time periods (well maybe not so fictitious time periods) metal map created by Patrick Galbraith also there are several of those types of maps in this question as answers. If it is data you are wanting you might explain the use (after you get it into openlayers). There ...


-2

Welcome to gis.stackexchange.com! You should have read the guide on asking questions: Have you thoroughly searched for an answer before asking your question? Sharing your research helps everyone. Tell us what you found and why it didn’t meet your needs. This demonstrates that you’ve taken the time to try to help yourself, it saves us from ...


2

Update: The Geocommunities store has the CLU for the whole US: http://store.geocomm.com/viewproduct.phtml?catid=25&productid=2188 It lacks some of the original redacted attributes, but it's better than nothing.


2

You can download administrative shapefiles from here. Simply select Russia as your Country and Administrative areas as your Subject. You will receive 3 shapefiles of differing administrative levels so you can choose what level you would like. Here is are some attributes for the lowest level: Hope this helps.


0

you can create a JSON object to add attributes to clientside graphics on the fly. API Reference - Graphic.attributes https://developers.arcgis.com/javascript/jsapi/graphic-amd.html#attributes



Top 50 recent answers are included