Questions tagged [population]

Use this tag for questions that are oriented specifically to problems in population science and to demographic analyses that have a spatial dimension.

26 questions with no upvoted or accepted answers
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Clustering based on eqaul populations

I have a map of a city that is divided into 65 sectors (building lots in purple, sector boundaries in red): In my shapefile of building lots, I have an attribute that is the total population within ...
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97 views

gdalwarp crop_to_cutline generates error for some states

I am trying to crop states of a country by using gdalwarp . For some of the states I get this particular error, while for other states it runs fine. This is my second day at GIS/gdalwarp, so please ...
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76 views

Distribute population to health facilities (GP Practices)

I have been using GIS (ArcGis) for some years but I do not consider myself an expert. I am performing some analysis around GP Practices in London (UK), I would like to be able to estimate the ...
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1answer
3k views

Seeking India population by village, town and city for 1981, 1991, 2001 and 2011?

Trying to source population data for every village, town and city in India. I have been able to extract data for 2001 & 2011 from the census site, but am having a tough time finding a reliable ...
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25 views

Smooth Data Values Across Geographies with Zero Population

Looking to fill in gaps through generalizing a population count across U.S. counties. I.e., if a county has 0 population, but is surrounded by 5 non-zero counties, then change the 0-population county ...
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61 views

Creating population weighted spatial join of two layers with intersecting polygons using ArcGIS Desktop?

I have data where I sampled my outcome using a grid of 1-mile radii but my explanatory variables are at the census dissemination area level. I would like to average my census dissemination area-...
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51 views

Urban Center Boundary

I want to create an urban center boundary (in ArcGIS v10.3) by using a population-grid dataset. So, I selected high density cells, that is to say cells with population over 1.500 and hereupon I want ...
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33 views

Group cities into MSA/Agglomerated areas

I've been asked to do some research where I compare survey data to some population numbers. Unfortunately, I think it is likely the case that people who live in smaller cities that are close to large ...
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122 views

Displaying buffer around feature using population values in ArcGIS for Desktop?

I am working on a project that is about park accessibility. I wanted to display a buffer from a park that shows potentially 3 acres/3000 population. I am using Census tract data and I have a shape ...
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1k views

how can countrymeters.info be true?

I'm wondering, how this site countrymeters.info manages to gather information? They are displaying, as example "Net migration today" and information is updated real-time; few hours back it was -7, ...
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313 views

world city database (with lon,lat) & population per year

I'm building a visualisation with cities population around the globe for a website, found the MaxMind free database that includes most cities around the globe with coordinates and population, which is ...
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821 views

Trying to Create a Global Choropleth Population Density Map then add Biodiversity Level

I am trying, quite unsuccessfully, to create a global choropleth population density map for a specific 120 countries, using ggplot2. Once I have created this choropleth map, I want to add number of ...
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742 views

How to create a buffer around a point that takes terrain elevation in account?

In QGIS, I am creating a few different buffer around points to simulate walking distances. For example, 10 minutes walk about 800m at 5km/h. Using population density, I then clip a population layer ...
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111 views

trim a global quadtree by population density?

I'm looking for a way to match people so as to find other members that are 'nearby' - not for those dreadful 'girls near you' ads, don't worry ;_) Of course 'nearby' in the country is a different ...
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1answer
39 views

Raster smoothing - assigning each raster the average value of its neighbors

I have a raster world map of population densities at a resolution of 30 arc seconds. For each raster, I want to find out the average density of neighbors within a certain distance (e.g. 0.1 degrees). ...
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47 views

Population calculation per grid using QGIS?

I have a ward map of a city along with the population in each ward. I have divided the map into 1 km* 1 km grids. How do I calculate the population per grid, taking into account that there can be ...
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47 views

How to create an area cartogram in Shapefile format

I am working with state level data on health insurance to create a map with each state color-coded based on that data. This is fairly straight forward but some of the largest states geographically are ...
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1answer
58 views

Aggregating population data (at Census tract level) to voting district level in R

Suppose I had voting data from the 2016 election at voting district level, and population data (from 2010 Census, say) at the block or tract level. I am hoping there are no blocks/tracts in two ...
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1answer
82 views

Splitting One Polygon By Boundary of Another using QGIS?

I'm using QGIS 3.0 and attempting to calculate the number of people that fall within a buffer. The population count is a field within my block group polygon layer. I've attached a screenshot, the ...
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278 views

Using Buffer areas to calculate population in ArcGIS Desktop?

I'm trying to figure out a process in ArcMap that will be able to analyze the approximate number of people living near transit stations. I'm eventually going to turn this into a Python script, but I'...
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31 views

calculating the population of destinations

I would like to calculate the population of my destinations I created with OD Cost Matrix. I have got population data but I don't know how to find the population of my destinations scattered on my ...
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127 views

population density “hotspots” within ZCTA

With the available census tables (county, tract, block, zcta) and shapefiles, is it possible to identify "hotspots" of population concentration within a ZCTA? The ZCTA gazeteer file provides the ...
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514 views

Comparing Population Pyramid - Fixed or dynamic X-axis?

I have prepared an interactive visualization for Population Pyramid of G-20 countries from 1990 to 2100 using United Nations 2015 Revision of World Population Prospects data. However, in order to ...
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233 views

Finding census block with highest pop. value within census tract using QGIS?

In QGIS, I'm trying to plot a centroid of only the census block with the highest population within each census tract. So there should only be one point per tract- that of the block with the greatest ...
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1k views

How to calculate a population weighted centroid using a raster and shapefile in QGIS?

I am very new to QGIS so please help me with a step by step answer. I have a raster file with population count and a shapefile based on a large population and shapefile. I have successfully created ...
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1answer
37 views

Seeking population data for Detroit?

I need population and age breakdown data for Detroit. I have found census tract shapefiles but none with the attribute data that I need. Any idea where I might find such data?