A procedure of systematically acquiring and recording information about all the members of a given population.
2
votes
1answer
39 views
US Census Data - An orderly means of deducting the area-weighted population of segments of incorporated places from the population of counties?
I'm working in ArcMap 10.1. Currently examining the segment of states with a geographical hierarchy of
Counties, coextensive with state boundaries
Within counties, unincorporated areas and ...
1
vote
1answer
16 views
Missing Polygons when importing a previously exported shapefile using QGIS (mmqgis plugin) Geometry Export to CSV.
I've obtained the following file from the US Census Bureau.
ftp://ftp2.census.gov/geo/tiger/TIGER2012/UNSD/tl_2012_42_unsd.zip
I've been working with these files and have noticed some issues with ...
0
votes
1answer
44 views
ArcMap Geoprocessing Operation to create a layer with incorporated places and, separately, surrounding unincorporated portion of a county?
I am working with TIGER FILES, attempting to use the update (analysis) operation in ArcMap 10.1. The files I'm using are counties, and the incorporated (non-CDP) segment of the places file.
I'm ...
0
votes
1answer
20 views
BBox missing when converting TIGER to GeoJSON
I can't get the bounding boxes of polygons if TIGER/Line shape files when converting them to GeoJSON using FWTools. The other default information is present and there is no difference between the ...
0
votes
1answer
28 views
merging and seperating data
I have a census block shapefile and I want to separate the data according to their towns or village. The towns/village is a separate shapefile. Any help is greatly appreciated. I am using ArcInfo ...
2
votes
0answers
40 views
Splitting a shapefile into many shapefiles with open source
I want to create a shapefile for each of the 72,000 census tracts in the United States that includes the census blocks in that tract using open source software.
I will probably start with a state ...
2
votes
0answers
70 views
oil palm stand census algorithm
Anyone have experience in oil palm stand census using tree detection algorithm from satellite images in ArcGIS or QGIS? any references for usable algorithm? What is the accuracy? thanks for help.
2
votes
0answers
99 views
Where can I download free or open access census datasets for China, including their respective spatial boundaries?
I am interested in the equivalent of US Census Bureau open data and its relevant Tigerline spatial data, albeit for China. In Canada, we also have data released by Statistics Canada along with ...
1
vote
0answers
12 views
Making Tiles - Varying the Zoom Level by Population Density
I want to create map tiles for all of the United States at high zoom level (12 or 13). I am using TileMill and mapping census tracts (income).
However, I only need the high zoom level for populated ...
1
vote
0answers
76 views
How to calculate weighted mean coordinates within polygons?
I'm using QGIS 1.8 on OSX 10.8.3.
I have a polygon shapefile of all of the US state legislative districts.
I also have a layer of points that are centroids of US Census Tracts, with a field for the ...
1
vote
0answers
37 views
Level of data available on FactFinder
I am trying to find data at the block level or even block group level for the SF1 files and ACS 2010 or 2009. Just recently, two months ago, I was able to get this data but for some reason I am now ...
0
votes
0answers
25 views
Census Demographic Data from DMA ID
How can I go about finding demographic data by DMA ID? Is there a data file I can download from somewhere that I can use to import into my web application?
0
votes
0answers
55 views
Congressional Redistricting
I have a project coming up where I need to create new congressional district looking at only total population data. I am planning on using the census tract level of data, but I am having some ...
0
votes
0answers
39 views
Identifying shapes in TIGERweb WMS SVG
I'm using the US Census WMS service describe here. Using code similar to that found in this example, but specifying a data format of "image/svg+xml", I've been able to get the TIGERweb WMS service to ...
0
votes
0answers
43 views
Anyone have a sample MS SQL query for Census Block to State Legislative District matching?
I'm new to spatial queries. Does anyone have a sample MSSQL 2008 query that would match a Street/City/Zip with the CA State Senate and Assembly Districts? All I need to do is return the Legislator's ...
