Use this tag for Questions which are specific to the country of the United States of America (USA), Do not use for United States Virgin Islands (VIR)

learn more… | top users | synonyms

0
votes
0answers
11 views

USA Road Network Data Set Options?

I need a contiguous, nationwide USA Road Network with speed limits, distances, etc. I have been using TIGER but the challenge is at state boundaries - where contiguous road segments are split. Is ...
6
votes
2answers
130 views

Identify this state outline file

Some time back, I came across a site that was offering sets of US state outlines that were intended to be attractive/artistic rather than geographically accurate. I only have this copy of the outline ...
2
votes
1answer
35 views

Converting NAD 83 State Plane Maryland Feet Coordinates from lat/long and vice versa using QGIS?

I need to convert a list of lat/lon points (in.csv file) into NAD 83 State Plane Maryland Feet and vice versa. I know it can be done using ArcGIS, but I only have QGIS. I am also quite new to ...
1
vote
1answer
23 views

IL School District Shapefile

In order to help our client manipulate a map to show disparities in public school course offerings in Illinois at the school district level, we’re looking for a current year vector shapefile of the ...
0
votes
0answers
6 views

How do I display NAD 1927 Albers with other data?

I have some raster datasets which are in NAD 1927 Albers projection. I cannot seem to display any other type of data with this projection. I get the pop-up projection warning when trying to add a ...
-1
votes
2answers
20 views

Seeking Atlanta's limits shapefile?

I need a shapefile of the limits of the city of Atlanta, USA.
-1
votes
0answers
15 views

US Census Population Data Availibility

which is granular level of data zipcode data or block level data ? And is there any possibility to get house hold data for more granularity?
0
votes
1answer
19 views

How is distance measured in TIGER/Line data for roads?

So I'm working with some TIGER data for network analysis, and it comes with no speed or time attributes, so I was able to assign average speeds to the various road types, and I was going to use field ...
1
vote
0answers
42 views

Where can I find GIS files that shows the 11 nations of the USA?

This book describes the cultural boundaries that define America. At least one person has created what seems to be a GIS style map from this. Does anyone know where I can locate these files?
0
votes
1answer
25 views

Combining data in two projections?

The PAMAP dataset comes divided between two different projections: Pennsylvania North State Plane and Pennsylvania South State Plane. I'd like a great big DEM of the whole state of Pennsylvania. ...
1
vote
2answers
21 views

Looking for a shapefile of the US Southwest Border Sectors

I'm looking for a shapefile similar to the following image: I'd just like the outlines of the sectors. I'm only concentrating on the southwest border which is San Diego all the way to Rio Grande ...
2
votes
3answers
61 views

Identifying coordinate system?

I'm wanting to create a data layer using some open crime data from Salt Lake City, but I can't figure out the coordinate system they are using. See the link below to view the data. (You'll have to ...
0
votes
1answer
31 views

How to find data about all individual residential properties in a neighborhood and map them out parcel by parcel?

I am trying to make a map about residential properties in 3 neighborhoods in Oakland, California. I already have the shapefile for all the parcels and blocks, but I need to find data that indicate ...
0
votes
0answers
15 views

Seeking Federal Government or Public-Sector Oriented GIS Community of Learning/Practice?

Does anyone know if a public-sector oriented, or ideally, a federal government community of learning/practice for GIS exists? I have yet to begin really using GIS for my current position but I'm ...
0
votes
0answers
36 views

Are there any addresses that straddle two or more congressional districts?

I'm using a shapefile of TIGER data provided by the Census Bureau for locating an individual's congressional district. In PostGIS I'm running an ST_Intersects query in order to take a (lat, long) ...
1
vote
1answer
28 views

Mapping Longitude and Latitude to US state

Is there any database (Gov data or private) or web service that map Longitude and Latitude to US state? I have the specific Longitude and Latitude of a location and would want to identify the state ...
1
vote
1answer
26 views

Where can I find Hawaii public transit data?

I am looking for public transportation routes and stops for Hawaii public transit. So far I have found a shapefile for TheBus routes and stops for the island of Oahu from the state of Hawaii Office ...
0
votes
1answer
30 views

Seeking low-resolution DEM of California?

I'm trying to create a 3D model of California (which I'll manipulate in Blender) at a fairly low resolution — just enough for large features (like Mt. Tamalpais, Coronado, etc.) to be legible. ...
0
votes
0answers
23 views

Zip Code + 4 data file or shapefile [duplicate]

Is there a 9 digit Zip Code (Example- 75001-6664, Zip + 4) data set that I can download? Please advise.
4
votes
4answers
211 views

city/town polygon shapefile

Does anyone know of a reliable source where to download city/town polygon shapefiles? I'm specifically looking for NY and NJ. I have come across point shapefiles, but not polygon. For example in NY ...
2
votes
2answers
111 views

Detroit Building Footprint shapefile

I am looking to find a dataset/shapefile of a Building footprint/outlines for the city of Detroit. I have found this dateset of detroit parcels but I need Building Footprints! ...
0
votes
0answers
29 views

PostScript files (.ps) in GIS? How to use those?

I am working on a USGS dataset. I have a geology map - but there is only linework, no symbology (no colors, no .lyr file). I was wondering if there is any way to assign colors automatically from .ps ...
2
votes
0answers
20 views

Import polygon shapefile with SPCC Sections [closed]

I have a data set with records containing Township, Range and Section information but no X,Y coordinates. I would like to bring in the data to ArcGIS with each section as a polygon or a x,y point in ...
1
vote
1answer
100 views

Texas and New York Township, Range, and Section GIS Data

I have a number of lat/long coordinates that I need to identify township, range, and section for. I am using QGIS to do it. The coordinates are in different states and I was able to most states' ...
0
votes
0answers
41 views

How to get symbology (.lyr?) for USGS geologic maps?

I work a lot with USGS geologic maps and always have the same problem. I am able to download the files from the website (in .e00 format), and make a nice shapefiles out of them. My problem is that ...
0
votes
0answers
25 views

Figuring out how to work with state plane coordinate system

I am working with a physical map and we are currently learning about different coordinate systems and how they can be applied. I am really stuck on State Plane Coordinate systems. I have been ...
1
vote
1answer
90 views

Getting inaccurate results converting from New York State projection to NAD83 with Python's pyproj

I've been trying to do a standard coordinate translation between New York State Long Island (ESRI:102718) and latitude/longitude (EPSG:4269)...but I keep getting the wrong lat/lng results. I don't ...
0
votes
0answers
43 views

Coordinate system for the State of California

I need to calculate, for the whole state of California, the hectares per type of crop. To do that, I have to project my layers. Because I need to work with all of the area of California, I think I ...
12
votes
3answers
497 views

Does transforming to a new projection, then back, affect data accuracy?

I have a feature class (South Carolina counties, so a fairly large geographic area) in NAD83 SC State Plane. It needs to be transformed to a second projection (NAD83 UTM 17), then transformed back to ...
1
vote
1answer
93 views

Choosing projection to make Arizona look “normal”?

I am having issues projecting my AZ state boundary from looking like this: to looking like this: I found that I could use the U.S. National Atlas Equal Area to get the shape I want, but when I ...
4
votes
1answer
42 views

Annual Precipitation Data Sets

I am looking for annual precipitation maps for Minnesota and South Dakota. Preferably in a raster or polygon format. Basically, something I can spatially tie to data in a large database. I have been ...
1
vote
1answer
28 views

Using USGS data in 3ds max/ps/vue etc

I'd like to use USGS data in other software to produce 3d terrains. Ideally I would use IMG format as its most common from what I see. But how can I convert it to a 32 bit exr format for usage as ...
3
votes
1answer
149 views

Converting coordinates in Florida, USA?

I have an point location and the information given is: Easting: 519122.06 Northing: 1290630.07 Original thought was it's UTM, but does not appear to be correct because I know the point needs to be ...
3
votes
2answers
55 views

Alaska Series E projection in ArcGIS for Desktop?

I am trying to digitize a scanned map that appears to be in the Alaska Series E projection. I have also seen this referred to as Modified Transverse Mercator. While this projection is listed as ...
0
votes
0answers
15 views

need to clip multiple USGS quadrangles in Geotiff format to statewide index in polygon format

I need to trim the collars off of many USGS 7.5 minute quadrangles for a state. I have the quads as GeoTiffs and have the polygon boundary for the whole state. I think there are about 1446 ...
3
votes
2answers
124 views

Projection for Calculating Distances in Continental United States?

TL;DR Question: I want to calculate distance from point to edge of nearest polygon for 2,000 points in Continental United States. What is the best projection to use? Full Question: I have two ...
0
votes
1answer
50 views

Determining US zip code location information from first three zip code digits?

I am working on a dataset that comes from survey results. The only location identifying information we have from those who took the survey is the first three digits of the U.S. zip code. How ...
1
vote
3answers
95 views

How to find income data by census tract or block?

I am trying to find a file with income data for every census tract. On the American FactFinder/Census websites, I can find data for each individual state or county but I want all census tracts in ...
0
votes
1answer
55 views

Database of U.S. Buildings

Does anybody know where I can find a database containing all (or a large percentage of) building addresses in the U.S.? I'm particularly interested in commercial properties. Perhaps there's a google ...
6
votes
1answer
259 views

Displaying data from two UTM zones on one map?

With at least some USGS quad maps, maps that overlap into adjacent UTM zones continue to use the same false easting (rather than start at zero in the middle of the map). Is this a required standard ...
1
vote
0answers
24 views

Wireline internet (cable, dsl) availability data source

I'm looking for data on spatial availability of cable, dsl, etc. internet service in Washington State, USA. Mainly interested in the big telco providers Comcast, ATT, etc.
3
votes
2answers
479 views

What coordinate NOTATION would this be?

0558253.7 13083091W The data came in a csv file which was then converted to an xlsx file in Excel. No mention of original coordinate system, and the fields were just named - "LATITUDE" and ...
2
votes
1answer
86 views

How to choose a latitude-longitude among conflicting sources

Suppose you use various geocoding facilities (like Mapquest's API, Texas A&M's, etc.) to get a latitude-longitude pair for a given address in the United States. They give you differing answers, ...
1
vote
1answer
85 views

What is the color standard for roads or Transportation for USA?

Are there color standards for US Transportation roads such as Interstate, County,, Interstate, local, private, state highway and other roads out there ?
1
vote
1answer
30 views

What are the rules/guidelines for what the total population in a US census block group has to be to justify a split?

What are the rules/guidelines for what the total population in a US census block group has to be to justify a split? I'm wondering if the US Census Department has any guidelines about when to split a ...
1
vote
0answers
92 views

How to calculate which US counties border the ocean?

I have a shapefile with boundaries of US counties. I want to figure out one seemingly simple thing - which counties are on the Atlantic ocean? NOAA maintains a list of coastal counties, but this ...
0
votes
0answers
34 views

I'm looking for a shapefile of 1990 Census data for California at the Tract or Block level

Does anyone know if the 1990 Census data is available as pre-joined shapefile? I'm looking for 1990 Tract or Block-level data on Riverside and Kern Counties.
0
votes
0answers
60 views

Search for hillshade for Colorado

I'm looking for a hillshade for the state of Colorado...Prefer less than 10 meters. Prefer they come from either image server or arcgisonline.com that I can download to my computer. Prefer it be ...
0
votes
1answer
28 views

US Census: bivariate chloropleth of total population (ACS 2013) and total jobs (LEHD 2012)

The most recent ACS data available is 2013 and Tiger data is also available for 2013. The most recent LEHD data available is 2012 and the geography crosswalk files join it to Tiger 2010 data. Given ...
0
votes
0answers
29 views

1990 TAZ and 2000 Census Tracts data analysis issue

There is no 1990 CTPP data available at the Census Tract level for my study area. I have 1990 CTPP data by TAZ and 2000 data by TAZ and Census Tract. The TAZ are the smaller areas. I would like to ...