Questions tagged [apportion]

to allocate portions of an attribute value to the resulting pieces of a split operation

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Apportion Polygon in ArcGIS Pro keeps getting empty outputs

I'm trying to use the Apportion Polygon tool to find the demographic characteristics of the population within 3 km of a set of point features. I used the buffer tool to make 3 km radius polygons ...
Lee Yang's user avatar
1 vote
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How to map 9-digit ZIP (ZIP+4) codes to census tracts?

The U.S. Department of Housing and Development provides a crosswalk between standard 5-digit ZIP codes and census tracts. This is a hard problem, as neither set's units are contained in the others'. (...
László's user avatar
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2 answers
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Apportioning neighborhoods and census tracts - ArcMap

I have a census tract shapefile and a neighborhood shapefile, and the end goal is to analyze vulnerable populations within each neighborhood using the data from the census tracts. Currently some of ...
user167945's user avatar
2 votes
1 answer
122 views

Calculating apportionment on the client-side in JavaScript map?

I have a set of census polygons (P1... P4) containing population information, and I'm building a tool using the ArcGIS Server JavaScript API whereby the user can draw an arbitrary shape: I need to ...
Stephen Lead's user avatar
1 vote
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Non-area based apportionment methods

I'm quite new to GIS data, and I currently have an issue where I have data on a specific variable coded in one set of geographic units and I need to convert it to another set of geographic units. ...
Ashe's user avatar
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Aggregating Individual District Assignments to Census Block

Working on a solution that may work but figured I'd ask the community to see if there's a smarter way to get this task done. I have a voter registration file with district assignments for each voter. ...
LearnWorkLearn's user avatar
1 vote
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Apportioning two layers using mapbox studio classic

I am using Mapbox Studio Classic to take two shapefiles--one with census tract geometries and the other with my own custom defined geometries. I want to apportion the two geometries so that I can get ...
polywhat's user avatar
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1 answer
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Using spatial join in ArcGIS for Desktop?

I have two spatial layers of about the same (not exactly same) spatial extent. Layer#1 has about twice the number of polygons than layer#2 (in thousands). I am trying to calculate values for Field#X ...
Sam's user avatar
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1 vote
1 answer
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Ratio policy for Intersect in ArcGIS Online?

I have two polygon layers in ArcGIS Online (for organizations) stored as Feature Layers; one is population block, another is the AOI polygon. They are overlapping and I want to find out what portion ...
Alex Tereshenkov's user avatar
1 vote
1 answer
745 views

How to aggregate values of different statistical areas that are overlapping?

Let's say I have one polygon layer counties with the polygons of administrative borders and another layer postal codes with the polygons of postal code areas. I have some statistical values per ...
bugmenot123's user avatar
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2 votes
1 answer
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Using Zonal Statistics As Table for overlapping polygons in ArcPy?

I'm using ArcGIS 10.2 for Desktop and would like to calculate the population within a specific distance from bus stops. My input layers are: census block (polygon) with population undissolved bus ...
GGT's user avatar
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2 votes
1 answer
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Disaggregating vector layer splits

I'm fairly new to GIS, but I've got the basics down. I'm utilizing QGIS and Python to calculate election statistics by legislative and congressional districts. I'm trying to aggregate precinct level ...
LearnWorkLearn's user avatar
3 votes
1 answer
16k views

calculate the population inside a buffer with census data

I have population data matched with polygons and a set of points that I have drawn buffers around. Assuming that the population within each geographical area, i.e. the polygons, is evenly distributed, ...
toby's user avatar
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7 votes
2 answers
5k views

Calculate population within radius

I have population data matched with polygons and a set of points that I have drawn buffers around. Assuming that the population within each geographical area, i.e. the polygons, is evenly distributed, ...
magnus's user avatar
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2 votes
1 answer
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Apportioning Neighborhood Information to Census Tracts using ArcGIS Desktop?

I have a shapefile of census tracts and another shapefile of "neighborhoods" with values that I need to have joined to the census tracts. I know I need to apportion the area of the neighborhood ...
user32636's user avatar
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