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

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0answers
15 views

Dividing and aggregating polygons based on population?

I have started a new project where I am looking at municipal wards within a community. The community is currently made up of 4 wards. I have federal (canadian) neighborhood census data that provides ...
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2answers
39 views

Can I overlay a population raster with fishnet shapefile?

I used the dasymetric toolbox to proportion the population of a city based on areas of habitable land. I have the output in a raster file with a corresponding attribute table. My output has a column ...
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1answer
36 views

Finding the overall weighted centroid from other centroids [closed]

I'm new to python, and I'm trying to find the overall weighted population centroid of a state, using the unweighted centroid from counties. These unweighted centroids already have a popualtion field ("...
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1answer
35 views

Exporting spatial population density data to Excel

I have spatial population density data that I would like to export to Excel (or similar) so that I can use it in analysis with another dataset. Specifically, I want the XY coordinates and the values ...
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2answers
32 views

USA census historical demographic data

I am currently working on a project where I am responsible for calculating the mean temperature and precipitation data across the USA. My calculations are made for metro census data and county ...
1
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1answer
44 views

Calculating population density from urban raster reclasiffy

I am using ArcMap Out of a raster, I reclassified it into only having the urban areas. I ran this through zonal statistics and got the area of the urban area (in meters, which I presume are in ...
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1answer
78 views

Estimating population in flood zones?

I have a census tract shapefile with the population of a minority group and total population. I am trying to analyze this group by high and low risk flood zones. The problem is that not all of the ...
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0answers
29 views

How to combine population density data to land use data?

i have census data and land use data in vector format. I tried to combine the population density vector data with land use data set, but every-time it gives me wrong output. Moreover, my land use ...
3
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1answer
56 views

Correlating ONS LSOA boundaries w ONS Pop Data using CartoDB

I'm looking for a way to vector-map Birmingham population densities by Lower Level Super Output Area (LLSOA). I have two sets of relevant data: the ONS LLSOA boundary set, and ONS estimates of ...
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0answers
52 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 ...
3
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0answers
18 views

How to spread a population data from a vector layer in a raster layer? [duplicate]

I got a shapefiles for provinces in a African country. In each province there is the population data. I've got 3 TIFF (raster), one for the agriculture, one for the cities and the last one for ...
2
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2answers
279 views

Where to find Population Density (shp. or grid) for Europe? [closed]

Does anybody know where to download shp. or grid file on European population density (inhabitants/ sq.km)?
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1answer
122 views

Spanish municipality level shape file and population data

I'm struggling with the Spanish municipality level. I need to incorporate population data with the lat/long for each Spanish municipality and below are the details of my current files: I cannot ...
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0answers
15 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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0answers
49 views

Calculating population statistics for postcode centroids

Perhaps this isn't really specifically a GIS question, but I've been using ArcMap to measure distances from the access points of green spaces in Bristol to postcode centroids and would like to use ...
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1answer
136 views

find the population density of some points in qgis/postgis

I have the tiger census data of population density in each block group. I also have a different kind of data: traffic accident data, where an accident has a lat/lon pair. My goal is to find the ...
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1answer
86 views

Is there a way to create an urban extent/population distribution map which only includes areas with a population above 100,000

I'm looking to do analysis on cities throughout the world. I'm using WorldPop, LandScan and MODIS data to gain urban extent and population density maps. I would like to extract areas which have a ...
2
votes
1answer
122 views

How can I apply a color ramp to a shape file layer in QGIS 2.8?

How can I apply a color ramp to a shape file layer to show something simple like population variance? If this was ArcGIS, I would do it by using the Quantities tab in Symbology but I have been unable ...
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1answer
75 views

Is it possible to join two different data sets in QGIS?

I have one data set which contains all federal states of Germany. The other dataset is about the population density in every km² in the EU. My goal is now to join these two Datasets so I can answer ...
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0answers
91 views

Proper size of buffer to represent village boundary using Geonames populated places

I am trying to estimate population for each Geonames populated place (PPL) in Tanzania. There are about 8000 PPL, represented by point features, however population data is missing. I used ArcGIS to ...
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0answers
61 views

Project Raster Data Loss - 2 Billion People

I am using the SEDAC/CIESIN raster data for population counts. This data is in WGS1984, and I want to project this data to a Fuller projection. After running through "Project Raster" in ArcMap 10.1, ...
2
votes
1answer
3k 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, ...
0
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1answer
471 views

Mean Center/Median Center tool providing points mathematically centered but physically appearing in the wrong location

To create population weights, I'm using the Mean and Median Center tool to find the center of our populations in census tracts. However, I've noticed that some of the points that are popping up are ...
3
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3answers
209 views

Computing population exposure

I am new to ArcMap. I have polygon layer, which represents buildings, and each polygon has number of inhabitants in Attribute table. Then, i have a layer which shows noise levels in the area, ...
5
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1answer
795 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, ...
2
votes
1answer
389 views

How to do a Kernel Density with “population field” in r?

In ArcGIS, I can generate a kernel density map and weigh it by population field. For example, I can use city's population as weighting factor, so that more populated city has higher influence to the ...
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0answers
78 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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0answers
381 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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0answers
134 views

Finding census block with highest pop. value within the census tract

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 ...
2
votes
1answer
671 views

Finding and using data on population density files

I'm attempting to replicate this map for the state of Nevada in QGIS: source: http://www.bostonfed.org/commdev/c&b/2014/spring/map-distance-to-closest-snap-outlet.htm (A SNAP outlet is just a ...
5
votes
1answer
464 views

where can I get population of each of the Indian villages and towns?

There are over 600,000 villages in India. I want to get the population of each of the village according to 2011 census. I searched the http://censusindia.gov.in website for hours but could not get ...
3
votes
1answer
339 views

Python Geolocation Software to Filter Cities By Population Within a Radius?

What I'm trying to achieve I want to enter a US city/state or zip code value. Then enter a radius (ex: 30 - would stand for 30 miles). Then I enter a minimum population (ex: 100000 - would tell the ...
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1answer
101 views

Visualisation of “dominant” point in each location

I had an idea for a kind of visualisation, and I'd like to know if it's been done before, what it's called etc. Basically it would visualise a single numerical quantity that varies greatly, at ...
3
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1answer
324 views

Is there a way to get accurate daily U.S. populations? [closed]

I suppose you could interpolate from the Census data, but I am interested in a data feed that has accurate DAILY total population of the U.S. The finer the granularity, the better (so if there was ...
2
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2answers
283 views

Census Data Intersection with Unique Boundaries

Basics: I have a country wide dataset of Census blocks, I need to find the population of unrelated boundaries that do not ALWAYS follow census blocks. I would like to use Select by Location-centroid ...
0
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1answer
488 views

QGIS: Multiply Raster Value with Pixel size

i'm working on a map with population densities. My raster data contains values as [People/square meter] for each cell. I have per capita values of energy demand etc. which I want to multiply with the ...
3
votes
1answer
408 views

Calculate population coverage?

I am relatively new to QGIS and hope I explain this right. I am looking at the percentage of an population that has geographical access to healthcare. Therefore I have one shapefile with village ...
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0answers
144 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 ...
2
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2answers
107 views

Population by Census Tract

I am looking to obtain count of population by census tract. The ideal output would be Census Tract 1919.01 Population = 7,435. Does anyone know of resources where I can get this information. I tried ...
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0answers
545 views

How to calculate a population weighted centroid using a raster and shape file 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 shape file based on a large population and shape file. I have successfully created ...
2
votes
2answers
719 views

How to interpolate population data?

I have population data (inhabitants per city and year) of 31 cities of the DR Congo for the years 1960, 1970, 1980 and 1990. I want to interpolate the population of all cities for the year 1990, to ...
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0answers
386 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 ...
3
votes
2answers
92 views

Prediction Population

I want to build a continuous data set with the population for 1970, 1981, 1991, 2001, 2011. I already have the population values for the same polygon, at sub-sections level (the lowest), for 1991, ...
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5answers
402 views

Linking demographics data to zip code, census data

Where do I find population data to link to DMA / MMA or zip code? I need to be more granular then state. Any free data source? ArcGIS?
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1answer
104 views

Where can I find human migration data? [closed]

I am looking for data to create a flow map. I need data showing the migration of people either within a country, or internationally.
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1answer
2k views

Python problems with select by attributes and user input

I am attempting to create a tool where the user can input a census tract number within the city of Plano (there are 77 tracts) and it ultimately creates a map layout showing the population density. I ...
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1answer
41 views

How to Compress/Stack Landscape features to examine spatial distribution and fragmentation?

I was wondering if anyone could help me figure out how to compress landscape information from multiple rasters (or polygons) into a single output. Basically, I want to explore how landscape ...
0
votes
1answer
297 views

Automating calculation of Population Density in Census Tracts?

I am quite new to Python and I am attempting to practice by making a simple program with ArcGIS. I wanted to make a script that automated the calculation of population density of selected census ...
3
votes
1answer
407 views

How to best determine the future location of a Fire Station?

I have been tasked with creating a map and doing some analysis that shows the future growth (10 years) of our county. They would like to see where the future growth is likely to occur and also show ...
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0answers
2k views

India population by town: 1981, 1991, 2001, 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 ...