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1answer
14 views

Why are some places missing from US Census Gazetter data?

I'm looking at the file I downloaded from the US Census here (2010 Census Gaz Places data), and I notice that a lot of cities are missing. For example, Montague, MA is completely missing. However, I ...
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2answers
38 views

Where can I find hydroelectric generation data for the U.S.?

It is my understanding that the US Army Corps of Engineers has some hydro generation data on their various websites (divisions, districts). For example, there is real-time hydro-electric data ...
2
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2answers
43 views

Is there a county-level maps dataset that includes independent cities in virginia?

and thank you in advance for your help. The following code shows the dataset I am working with: library(maps) CountyMapData <- map_data("county") head(CountyMapData) long lat group ...
2
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1answer
32 views

Where can I find road attribute and network for New York City?

Is there any possible to find the attribute of each road (such as road capacity, speed, longitude and latitude.) in New York City ? Thanks
0
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1answer
20 views

Historic (and current) borders of Miami, FL

I am working from Australia and am new to US mapping and Census data. I am looking for historic boundaries of Miami (FL) from maybe 100-200 years ago. Also current boundaries would be great - what ...
1
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1answer
32 views

Resolution of NED (National Elevation Dataset)

I downloaded some DEMs from the USGS with a resolution of 1/3 degrees for different areas in the US. Now I am looking at the files and saw that all DEMs have the same number of columns and rows. I ...
0
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1answer
40 views

Where can I find data on Vegetarian Restaurants in the US?

I'm doing a GIS project on Vegetarianism and I'd like to include all of the vegetarian restaurants in the United States. I haven't been able to find anything like it, or even data on all restaurants, ...
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2answers
64 views

How to plot the US maps with selected locations (longitude and latitude of the locations are known)?

I've been struggling with the following R plotting of the US map and wonder if any of you have suggestions on how the plot should be done. Here is what I have tried: US <- map("state",fill=TRUE, ...
4
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4answers
596 views

Now that NationalAtlas.Gov is retired/removed, where is the largest source of public shapefiles for the USA?

I used nationalatlas.gov for many years, downloading various shapefiles regarding water, roads, boundaries, environmental factors, and more. NationalAtlas.gov was a central public site that many GIS ...
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0answers
36 views

Finding political party affiliation data for the US

My ideal find would be party registration or affiliation down to the household, Congressional district, block, block group or Zip code level for the whole country. I've been sniffing around for a ...
0
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1answer
101 views

Regional Large Scale Map Projection Choice

I am currently designing a geospatial product that will be primarily used for large and intermediate scales that cover an entire state of the US or more. The UTM projection would be ideal because of ...
0
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0answers
13 views

Looking for Offshore Wind data for Puerto Rico and the USVI

NREL seems the obvious provider for such data but the NREL data download page only provides onshore wind data for this area. NREL even has an offshore wind energy map image for Puerto Rico and ...
3
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1answer
45 views

Postcode Shape Files for The USA

I'm using ODL Studio to draw US zip codes, and though I can download the free database and get it to load, I can't figure out how to draw boundaries. The tutorial provided on their site explains how ...
3
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1answer
46 views

Troubleshooting with Tiger for d3 — is this the wrong projection? Why's it look like this?

UPDATE: Solved, sort of … I downloaded the file afresh and tried feeding it through ogr2ogr and topojson again … and wouldn't you know … after a while it worked. I think I was possibly not setting an ...
1
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1answer
35 views

Looking for a complete list of cities by state, with area code

Our company is working on moving our sales assignments from area codes to ZIP codes, and we need some kind of dataset to help move existing assignments to the new system. Does anyone here know where ...
2
votes
1answer
65 views

Proper projected coordinate system for Minnesota for measuring areas

I have seen in ArcGIS many different State Plane systems for Minnesota (location coordinates in WGS84: 44,07 lat/-94,61 long) within the Projected Coordinate system group: NAD 1983 (CORS 96) ...
1
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1answer
52 views

What type of data is available at the “census block” level? [duplicate]

I'm curious what is available at the 'Census Block' level, the finest scale. I found this dataset: http://www2.census.gov/geo/tiger/TIGER2010/TABBLOCK/2010/ It contains HOUSING10 and POP10, ...
1
vote
1answer
66 views

Where could I download Income data at the Block Group level… census data [duplicate]

Where could I download Income data at the Block Group level, actually I'm not sure where or how to download it at the tract level either. I would be interested in the most recent data that is ...
3
votes
3answers
89 views

USA County level, detailed OpenStreetMap basemap in tiff?

Is there any way to get detailed (close zoom) OSM tiffs at the county level in the USA? I would like to use them as basemaps for a class I am teaching in GIS, using QGIS. I know about (and love) the ...
2
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0answers
12 views

GIS data on Lewis & Clark expedition?

I'm looking for historians' best estimate of the location of the Lewis & Clark expedition at each date during the trip, in a machine-readable format (e.g. that I could use in a GIS system). ...
3
votes
1answer
309 views

Is there a way to get accurate daily U.S. populations? [closed]

I suppose you could interpolate from the Census data, but I am interested in a data feed that has accurate DAILY total population of the U.S. The finer the granularity, the better (so if there was ...
1
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0answers
28 views

GIS files for US Special Districts?

I'm looking for GIS files (shp, geojson, kml...) for US special districts, but I can't find them anywhere. Special districts are single-purpose local governement distinct from counties and ...
1
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0answers
53 views

Get house addresses within polygon?

Is there a data source/service for the USA where, if we provide a polygon, it provides the addresses of all houses contained within it? I just want to know if this type of functionality or similar to ...
2
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0answers
19 views

Finding equivalent API-supported data to the 2000 Census

I'm having some difficulty choosing Census datasets for a project that involve various SES measures at the block-group level. I'll be looking at things like median household income and percentage of ...
1
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2answers
50 views

Row-crop field boundaries

I'm on the hunt for field boundary coordinates in the US in the form of GeoJSON, a Shapefile or any structured format that I can use to overlay on a map. I've tried looking at the US Department of ...
2
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0answers
181 views

ArcGIS WGS84 Web Mercator Vs. WGS84 UTM zone 15N: Very different distance dimensions

I am working in ArgGIS 10.1 with a field (raster layer in tif format) in which I have placed two points (.shp layer). I have two versions of both layers, resulting four layers: one tif+shp set in CRS ...
1
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3answers
59 views

Geographical media coverage map - USA

I'd like to know if there are some maps giving the geographical coverage of the media publication, for example, a map giving the counties or even the cities where local newspapers are sold, and a map ...
1
vote
1answer
42 views

Determining projection of Texas county shapefile?

I have a Shapefile of San Jacinto County in Texas. It thinks it is NAD83 UTM Zone 15N, but the dataset isn't jiving with any other dataset. Max X: 1,073,721 Max Y: 11,223,970 Min X: 895,728 ...
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0answers
36 views

Question about projected coordinate systems 30m DEM for Contiguous US

What is the best Projected Coordinate System (PCS) for the contiguous US (whole, not parts) if I want to maintain distance and area accuracy as much as possible across a nationwide DEM dataset? I'm ...
1
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1answer
181 views

Getting a list of zip codes with its adjacent zip codes

I need a list in the form of adjacency list that contains all zip codes in the United States that each has a list of adjacent zip codes. I tried searching for it on the internet. Many of them only ...
4
votes
3answers
216 views

Does the NED use geocentric or geodetic latitude?

What kind of latitude does the National Elevation Dataset (NED) use? Geocentric or geodetic or something else? I can't find the information anywhere on their site (http://ned.usgs.gov/index.html) or ...
1
vote
1answer
36 views

Setting the Geometry with sql query

I am trying to merge data from a U.S. states shapefile with data on each state. I used this SQL query which is supposed to work: SELECT * FROM child_poverty_by_state UPDATE child_poverty_by_state ...
0
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0answers
33 views

What projected coordinate system to use for whole of USA? [duplicate]

I need to determine a projected coordinate system for a wide area that exceeds more than one zone? For Example: If I want to give US a UTM projection which zone will be represent the whole US? ...
1
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3answers
56 views

Using American Fact Finder to download data for all block groups in a state at at time?

I am having issues using the advanced search on the American Fact Finder to download census block data for a whole state at a time. The best option that it gives me, when trying any route, is to ...
2
votes
2answers
98 views

What is the source of horizontal and vertical striping in USGS DEMs?

When processing 30m and 10m DEM data downloaded through the National Map Viewer from the National Elevation Dataset, we noticed horizontal and vertical striping not only in the produced results, but ...
0
votes
1answer
26 views

Census data 5-year estimate for the United States

I am looking to download demographic data 5-year estimate based on census tract for the whole United States. The census website has the information, however, it does not let me to select the whole ...
0
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2answers
33 views

How do you bring a DOQQ into your dataframe

I have a DOQQ aerial photo that is orthorectified. I would like to bring it into the dataframe to digitize building and streets and create feature layers.
3
votes
2answers
51 views

Choosing projection to use for Least-Cost Path analysis at continental scale?

I am trying to find least cost paths from the southern USA to the Great Lakes region (for example). My resistance layers are currently in an equal area projection but I'm wondering if I should convert ...
3
votes
1answer
133 views

Which projected coordinate system should be used for mapping the US?

I'm on a project requires integrating data for all states in the US. It means I have two roadway datasets and I'm going to assign the attributes of roadways in one dataset to the same roadways in the ...
2
votes
0answers
47 views

Insanely large house numbers in TIGER data

I'm parsing the US TIGER data and I'm coming across huge house numbers. example: 10100005 Thousand oaks drive, st johns, florida Google maps, and open street maps - nominatim says this is valid! Im ...
0
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0answers
87 views

Creating a custom Lambert Conformal Conic projection in ArcGIS 10.1 and/or 10.2.2

referring to the table below, I am trying to use the values on the left from another program that uses different terms for the parameters of a custom projection. I just wanted to make sure that ...
1
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2answers
50 views

Standard for identifying cities?

I was doing a research project a little while ago and found out about FIPS 6-4 which is used to identify counties in the United States. I also understand that this standard is a bit out of date. Is ...
0
votes
2answers
68 views

Looking for lat/lon for county seats

I'm currently designing a map for methamphetamine labs in my state. Ideally what I need is the center lat/lon coordinates for each county in my state or the lat/lon coordinates for each county seat. ...
0
votes
1answer
38 views

Loading Tiger & ACS Data Into CartoDB

Does anyone have experience loading the pre-joined TIGER shape files and ACS 5 year data files by block group into CartoDB? I have downloaded the data from ...
1
vote
1answer
56 views

Population by Census Tract

I am looking to obtain count of population by census tract. The ideal output would be Census Tract 1919.01 Population = 7,435. Does anyone know of resources where I can get this information. I tried ...
0
votes
1answer
52 views

Adjusting for road surface in Network Analyst? [closed]

I'm building a street network dataset and want to adjust the speed limit of certain segments to account for road surface (paved vs. unpaved). Are there any guidelines/rules for doing this (e.g. an ...
1
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1answer
38 views

How to translate 1980 US Census Place Code to post 1990 Place FIPS?

US Census PLaces are coded differently pre-1990 and post-1990, after the introduction of FIPS Code. For instance, for Albertville, AL: Pre-1990 : Place Code - PLACEA : 0030 Post-1990: Place FIPS - ...
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0answers
62 views

COUNTY WebService API lookup from valid street address

I am looking for a solid WebService API that will allow me to submit an http request with a pre-validated US Street/City?state/Zip Address and return COUNTY in xml or json about 200 times per work ...
0
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0answers
93 views

How do I use the new USGS topo WM(T)S in QGIS?

The WMS link for "Scanned Topo Maps from USA Topo" in http://viewer.nationalmap.gov/example/services/serviceList.html no longer works (HTTP 400). ...
2
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0answers
45 views

Historical US zip code allocations and locations?

Is there a data source available that has the full history (right back to the 1960's) of each US zip code? By history I mean, for each zip code: the date it was created, if later than 1 July 1963, ...