Skip to main content

Questions tagged [united-states]

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)

Filter by
Sorted by
Tagged with
-1 votes
1 answer
38 views

FCC maps of radio station coverage? [closed]

Are there any FCC maps of AM, FM, and TV station coverage on ArcGIS?
Geremia's user avatar
  • 210
0 votes
1 answer
10 views

How to find PLSS section corners, given the ring of nodes?

Given a ring of nodes and centroid representing a US Public Land Survey System (PLSS, or Canada DLS) section, find the four corner nodes. Do the same, but without needing the centroid.
Dan Jacobson's user avatar
4 votes
1 answer
119 views

fttx network design in QGIS: how to calculate distance to network backbone or another connected node, whichever is closer

I have a KML file of a fiber regional network (covers 2 US States) and a geocoded list of ~500 building addresses (nodes). I'd like to calculate two numbers for every address: The distance back to ...
fttx16's user avatar
  • 41
0 votes
0 answers
46 views

Finding out how many people are affected by rail noise in Florida using ArcGIS Pro

I have a TIGER rail line file and the census block layer for Florida. I clipped the rail line file to only have rail lines in Florida, added a buffer to approximate the area extending off the rail ...
Rob's user avatar
  • 1
-2 votes
1 answer
37 views

Finding hurricane metadata

How do I find metadata shapefiles for hurricanes that occurred in Florida? I have tried searching for it but I don't know what I'm looking at.
Mike Jones's user avatar
0 votes
0 answers
65 views

USA zipcodes shapefile

I have excel with zip codes and their respective latitude and longitude details, how can I plot them on arcgis pro in the polygon/polyline shape
disha sirsat's user avatar
1 vote
1 answer
276 views

Unable to find needed California State Plane projection in QGIS

QGIS version: 3.12 OS: Mac 12.1 Problem: I am trying to project a map containing parcel boundaries (vector) and orthoimagery (raster) to match the projection used by a set of (offline) project plans (...
Matt H.'s user avatar
  • 11
1 vote
0 answers
16 views

NHD's description of a river differs depending on which state it is in

So I downloaded the NHD shapefiles for both Texas and Arkansas rivers from here: https://prd-tnm.s3.amazonaws.com/index.html?prefix=StagedProducts/Hydrography/NHD/State/Shape/ I then pulled the route ...
neubert's user avatar
  • 370
2 votes
1 answer
175 views

Creating new layer with custom regions from states boundaries in QGIS

I am trying to create a map where I can combine a layer of states boundaries and one other with custom regions (Est/West) on QGIS. So I have tried it in different ways (union, intersection, merge ...
foxhound's user avatar
9 votes
1 answer
305 views

Why recommended transformation is not the most accurate in QGIS?

When I am prompted for a transformation to use in QGIS, the recommended/default option (in green) is the least accurate one. In my case, QGIS recommends a transformation with an accuracy of 6m when ...
Immersion.Ninja's user avatar
1 vote
0 answers
523 views

Does the Census Bureau's geocoding API limit request frequency?

I am trying to batch-geocode about 8 million address records using the Census Bureau's batch geocoder. I am currently doing so sequentially, which takes about a day to complete. I was considering ...
Arjun Shanmugam's user avatar
1 vote
1 answer
118 views

Making map with all 48 contiguous states resized so they each have equal land area using QGIS

How can I make a map in QGIS where I have all 48 contiguous states but they're resized so they each have equal land area? It's important that I do this without distorting shape, so that they're still ...
gshelor's user avatar
  • 13
3 votes
1 answer
86 views

Why would the NHD have wrong information / how to correct it?

According to the National Hydrography Dataset, the Blanco River in Texas consists of 108.3km of "artificial paths", 36.677km of it is a perennial river and 2.297km of it is an intermittent ...
neubert's user avatar
  • 370
0 votes
2 answers
66 views

Displaying location in ArcMap

I have a CSV file containing a location that I want to display as a point shapefile in ArcMap. The points are listed below. These points were collected 30 years back. I tried displaying using Add XY ...
Lira's user avatar
  • 45
0 votes
1 answer
114 views

Creating correct buffers [duplicate]

I'd like to create buffers that have a radius of 100 km around the centroids of US counties. First I have the problem that my shapefile uses a layer CRS in decimal degrees. Furthermore, if I create a ...
Julian H.'s user avatar
0 votes
0 answers
178 views

How do parcels relate to United States Census hierarchy?

The United States Census Bureau operates on the Standard Hierarchy of Census Geographic Entities, which ranges from NATION (n=1) to Census Blocks (n=8.1 million as of 2022). It is my understanding '...
bashity's user avatar
  • 109
0 votes
0 answers
111 views

Find latitude/longitude of northernmost, southernmost, westernmost, and easternmost points in county

I need to find the latitudes of the northernmost and southernmost points, and the longitude of the easternmost and westernmost points, in two US counties (one in Oregon and one in California). What is ...
Someone's user avatar
  • 101
2 votes
0 answers
407 views

California PLSS Quarter and Quarter Quarter Section Layers

I am trying to find the quarter section and quarter-quarter section layers for the PLSS layers of the state of California. I have the township & range and also the section layers but was unable to ...
tmo's user avatar
  • 61
1 vote
1 answer
691 views

Using California SRS Epoch 2017.5 (NAD83) in ArcGIS Desktop

I'm using RTK with SOPAC stations (http://sopac-csrc.ucsd.edu). The relevant reference system is California SRS Epoch 2017.5 (NAD83). I am trying to load the coordinates I got in this system, but I ...
gisman's user avatar
  • 11
1 vote
1 answer
195 views

Converting coordinates in Harrisburg (Pennsylvania) to WGS84 using GeoPandas

I have points in Harrisburg, PA in a GeoPandas (Python) GeoDataFrame with no CRS. How do I convert them to WGS84? I'm trying to do something like below but don't know what CRS to initially set the ...
Bernardo Trindade's user avatar
0 votes
0 answers
156 views

Creating fishnet across different UTM zones of USA

I am trying to create fishnet across the USA. In the end, I want to calculate summary statistics for the vegetation in each grid, as well as get the distance between the each cell's centroid and the ...
Sara's user avatar
  • 411
1 vote
1 answer
2k views

Seeking SRTM 90m data

I'm looking for 90 meter resolution SRTM data to coverage a large state in the Western US. I used to use Derek Watkins' awesome tile grabber for SRTM90: https://dwtkns.com/srtm/ but as he explains on ...
mikeLdub's user avatar
  • 1,205
1 vote
1 answer
113 views

When did USPS stop shipping its TIGER/ZIP+4 product?

When did USPS stop producing its TIGER/ZIP+4 dataset? Updates to the product page archived by the WayBack Machine stopped in July 2011, but it looks like some people might have been using it later ...
BStack's user avatar
  • 128
0 votes
2 answers
95 views

How to find a piece of property on, say, Google Maps using Arizona's description?

How to find a piece of property on, say, Google Maps, using Arizona's description: S2 SE4 NW4 SE4 SEC 5 16N 19 SAC? I found a different one described as: Section: 33 Township: 24N Range: 20W ...
Jeorje's user avatar
  • 3
1 vote
1 answer
187 views

Changing pixel size of georeferenced historical map

I have georeferenced an old toposheet from the US Army toposheet repository. However, when I look at the georeferenced map, it looks very grainy (i.e. pixel size is too big). How do I make it easier ...
Tammy's user avatar
  • 151
0 votes
0 answers
205 views

Mapping election data by zip

I am trying to create a map of Presidential election results by ZIP code, but all I have been able to find is election data by county (too broad) and precinct (too narrow). Does anyone know of a ...
user1071914's user avatar
0 votes
1 answer
1k views

Get Census Tract given a Census Block OR Get Census Tract given Latitude/Longitude

I'm using Python and am looking to get the Census Tract of a location given either a latitude and longitude or a census block. I can get the census block given latitude/longitude from here: https://...
mwpqz's user avatar
  • 1
1 vote
0 answers
14 views

Seeking most natural unit of analysis in between US county and state

Do you have any suggestions for the most natural unit of analysis in between US county and state? I am looking at Core Based Statistical Areas but those don't seem to cover all counties.
hrrrrrr5602's user avatar
3 votes
1 answer
257 views

Working with the FlowDir in the national hydography dataset

In the National Hydrography Dataset there's a FlowDir field. According to https://www.townofnewipswich.org/sites/g/files/vyhlif4766/f/uploads/dataset_dictionary.pdf the two possible values for FlowDir ...
neubert's user avatar
  • 370
-1 votes
3 answers
3k views

List of extreme latitudes and longitudes for each US state?

I need a list of extreme latitudes and longitudes for each US state. That is, max / min latitude, max / min longitude. The purpose is to exactly center each state map when initially shown. I found ...
Daniel Goldman's user avatar
1 vote
1 answer
192 views

Filtering demographic data for USA using TIGER/CENSUS data

I am working on Texas demographic data for a client. The ask is to collect demographic data for ZCTA areas of Texas state. I am looking for help in the source and linking demographic data for these ...
addcolor's user avatar
  • 1,304
1 vote
1 answer
258 views

What coordinate notation is this?

I have a shapefile with, for example, X_coords and Y_coords of 870058.5631 and 3226158.25 respectively. I want to convert these into decimal degrees in ArcGIS pro, but none of the input coordinate ...
Kactus's user avatar
  • 93
0 votes
1 answer
180 views

Points in shifted with different projected coordinate systems in same map

I am trying to map points on top of a map of Michigan taken from eBird a citizen science platform that records where birds were sighted. I downloaded an excel file for ebird sighting points, to use in ...
Amy C's user avatar
  • 1
-3 votes
1 answer
237 views

Is there an Excel, Stata, MATLAB, R or Python program or online website that converts geo-coordinates to distance at large scale? [closed]

I have the geo-coordinates (latitude and longitude) for more than 1000 counties (in Excel) in the US, and I want to know their distances to a particular county with known geo-coordinate. Is there an ...
ExcitedSnail's user avatar
1 vote
1 answer
2k views

Appropriate CRS for Close Distances in USA

I have a very big dataset in the form of longitude-latitude points in the US; with points from the entirety of contiguous US. I need to calculate the distances between points and check if they are ...
non87's user avatar
  • 21
2 votes
3 answers
405 views

Range of numbers for Township and Range

I am creating a GUI for input of PLSS data (Township, Range, Section). There will be 5 pull down or spinner components: Township, North/South, Range, East/West, Section The North/South component will ...
Al Lelopath's user avatar
1 vote
0 answers
1k views

Seeking shapefile of urban, suburban, and rural areas of US [closed]

I'm looking for something like this, doesn't have to be super accurate. I've tried searching for the source of that image but to no avail.
Ben Hendel's user avatar
-1 votes
1 answer
44 views

Where can I purchase small scale high res raster imagery?

I am doing a personal project in my neighborhood that requires some georeferencing and as such I am looking for some sub-1m accuracy orthos with which to assist. The normal free sources such as USGS ...
Conor's user avatar
  • 3,032
1 vote
1 answer
310 views

How to show Puerto Rico in "albersUsa" projection in Vega-Lite or Vega?

I have a shapefile that has all the US counties along with Puerto Rico and I want to visualize them in "albersUsa" projection using Vega or Vega-Lite. Problem is that in other projections, ...
jar's user avatar
  • 173
1 vote
0 answers
21 views

How to read *_LOW_HN / *_HIGH_HN fields in NY Street Centerline Data?

I've been looking at the NYC Street Centerline (CSCL), in particular number ranges for individual street segments. Quite a few look like this: ST_NAME L_LOW_HN L_HIGH_HN R_LOW_HN ...
n0yj7tf87hp0's user avatar
0 votes
0 answers
47 views

Identifying State Parks in the PAD-US dataset (Protected Areas Database)

I'm looking to map "State Parks," and I found this phenomenal, but complex database. Has anyone ever worked with the PAD datasets before? (or know any easier way to map State Parks?) In the PAD ...
Kristen G.'s user avatar
  • 1,100
1 vote
2 answers
787 views

Seeking PLSS Quarter of Quarter Sections in Oregon

I'm looking for a quarter of a quarter of a section (PLSS) which is 40 acres in size for the state of Oregon. I looked at several government and Oregon state web site and could not find it. The only ...
doronwen's user avatar
  • 428
0 votes
1 answer
220 views

Which map projection is suitable for distance measurement purpose in USA?

I'm developing an application which uses PostGIS functions for measurements in the USA. In nutshell: the software is running in a car and use PostGIS functions in real time. For example: to measure ...
zsoooc's user avatar
  • 349
2 votes
1 answer
2k views

Converting xy point to lat/long

I have data with columns x,y, address. And no any information about the projection of x,y points. How can I convert these points to correct lat/long pairs? 1091969,199515,27 HEDGEWAY CT 1092046,...
akushyn's user avatar
  • 65
1 vote
1 answer
58 views

ACS Data Interpretation

I am working with ACS 5-Year Data at the block group level in ArcGIS, and was hoping someone could explain what one of the elements on my attribute table means. I know that the B00001e1 is some type ...
Drew Heiderscheidt's user avatar
1 vote
0 answers
27 views

Finding distances associated with change in latitude and longitude at given location [duplicate]

I am writing a program that uses GPS lat and long coordinates and a time change to determine speed with the output in units of m/s (precise to 0.1 m if feasible, but 1 m is sufficient). When ...
Robotex's user avatar
  • 111
0 votes
1 answer
121 views

US Census Bureau Shapefiles with district IDs

I am loading senate district polygon shapefiles from https://www.census.gov/cgi-bin/geo/shapefiles/index.php?year=2019&layergroup=State+Legislative+Districts into my Leaflet map. Well, to be ...
GNG's user avatar
  • 421
4 votes
1 answer
3k views

Choosing CRS for Chicago, Illinois

I have data for Chicago, Illinois, that is in WGS84 CRS. I need to convert it to a metric projected CRS, and I've found several possible options: EPSG 3528 EPSG 6454 EPSG 2790 EPSG 26971 Among these,...
amitr's user avatar
  • 151
14 votes
1 answer
3k views

Why is there no state with code "03" (among other missing numbers)?

The US census documentation for state codes is missing several numbers. For example, there is no state with code "03", "07" and others. Here is the start of the list... STATE|STUSAB|STATE_NAME|...
CodyBugstein's user avatar
4 votes
1 answer
1k views

Is the ESRI ArcGIS definition of California Albers projection using units of feet correct?

There is a map projection promulgated by the government of the state of California and recommended for use in certain state and municipal regulations. It is an Albers Equal Area projection with ...
D.Mac's user avatar
  • 43

1
2 3 4 5
8