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.

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11
votes
3answers
2k views

Distribution of Human Population with Altitude

I recently found Joel E. Cohen and Christopher Small's work on hypsographic demography, i.e. the distribution of human population with altitude. Does anyone know of any other research in this area? I ...
7
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1answer
1k views

How to add attribute data up?

Sorry if this question is too simple/easy for you guys, but I'm still learning QGIS and pretty much teaching myself where I can. Is there a way to add data from 2 columns into one new column inside ...
7
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5answers
913 views

How to calculate purchasing power on postcode level?

Does anyone know of an algorithm to calculate purchasing power on a postcode level? What source data is needed? Purchasing power on admin. level, population?
7
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2answers
2k views

Where can I find Population data for all UK Counties?

Where can I find population data (male, female, total) for all UK counties for last 7 decades, i.e. 1950,1960,1970,1980,1990,2000,2010. I tried my luck with Office for National Statistics and UK ...
7
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1answer
3k 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, ...
7
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2answers
983 views

How to redistribute population data using Python in ArcGIS?

I am trying to redistribute population data from census centroids among to housing density. Would you please help me to do that? I do have census area centroids (points) and the boundaries belong to ...
6
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3answers
3k views

What is the highest resolution of population density data that I can obtain for USA freely?

Ok so as far as my understanding goes the most high resolution dataset available that factors in many other things (other than Census data ) at a 1X1 km resolution is Landscan data created by Oak ...
6
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2answers
255 views

What multiplier would you use for calculating estimated population?

Given a number of address points in a given area, what multiplier would you use for calculating estimated population? I have seen 2.5 in a few places, but I was wondering what the generally accepted ...
5
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2answers
318 views

Worldwide population density data not grouped by country?

Are there any data sources available, preferably freely (but not necessarily), which show population density without regard to country or constituency boundaries of any sort? I'd like to analyze a ...
5
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1answer
2k views

Calculate population coverage?

I am relatively new to QGIS. I am looking at the percentage of an population that has geographical access to healthcare. Therefore I have one shapefile with village boundaries including population ...
4
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1answer
139 views

Distortion of City -Boundary-Polygons proportional to population size in QGIS?

Is there a way to distort the size of polygons proportional to their population size (as in column in the attribute table)? I want to create a map that looks similar to this: the cartogram2 plugin ...
4
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1answer
2k views

Seeking population of each Indian village and town?

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 ...
4
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1answer
52 views

Population centroid of irregular-shaped German counties based on a population density grid

I'm new to QGIS and stuck with this task. Here's the data I'm working with: 1-square-kilometer grid Shapefile of Germany (https://www.zensus2011.de/SharedDocs/Downloads/DE/Shapefile/Inspire.zip?...
4
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2answers
132 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, ...
3
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3answers
275 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, ...
3
votes
1answer
12k 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, ...
3
votes
1answer
812 views

Determining future location of Fire Station using ArcGIS Desktop?

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 ...
3
votes
1answer
336 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 ...
3
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2answers
2k 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)?
3
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4answers
2k views

Algorithm for finding population for a given center point and radius in US

Here is what I have The population data aggregated by zip code given by US Census. Here is what I am doing right now: Reverse geo code the center point to find the zip code of the center point. ...
3
votes
2answers
591 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 ...
3
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2answers
3k views

Calculate dynamic radius based on population and map resolution

Background Create a radius around the centre of a city that corresponds to the city's population, taking into consideration the map's current resolution. The populations range from 39 to 1090936, ...
3
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1answer
1k 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 ...
3
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2answers
8k views

Change Circle Size According to Value using R

How do I change circle size in a population map according to the population density of the location? library(maptools) library(RColorBrewer) library(classInt) library(maps) ## load the file ## pop &...
3
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0answers
56 views

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 ...
3
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0answers
69 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
2k 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 ...
2
votes
2answers
676 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 ...
2
votes
1answer
1k views

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

How can I apply a color ramp to a shapefile 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 ...
2
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5answers
1k 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?
2
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1answer
220 views

Plugging in population data into a map of provinces

Have shapefiles for provinces in several countries in an Asian region, but currently trying to plug in animal population data for each province with graduated symbols displayed the data. Am trying to ...
2
votes
1answer
319 views

Getting rural/urban classification from Zip Codes

I have a dataset containing GPS coordinates and zip codes of locations from different regions in Spain, and I need to classify them as rural or urban based on either of these two information sets (and ...
2
votes
2answers
65 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 ...
2
votes
1answer
33 views

QGIS 2.18 Make population point proportional

I am mapping population abundance and distribution of a bird species in a one area. I am using several years worth of data to show how population and distribution vary by year. The years are marked ...
2
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1answer
94 views

Identify most densely populated areas along streets with QGIS

On Google Satellite Imagery, I've created a layer with objects marking houses in a 1 km proximity to large streets in a rural setting using QGIS with the Openlayers Plugin. I would like to identify ...
2
votes
1answer
51 views

How do I transfer data from one raster to another in qgis

I have 2 raster layers. The first is a mobile signal coverage raster with 0 and 1 values. The second is a population raster with value from 0.89 to 236. I want to transfer the population layer to the ...
2
votes
1answer
144 views

Analyzing population within buffer using raster population grid

I have a set of points and a population grid that is a raster file (http://sedac.ciesin.columbia.edu/data/set/gpw-v3-population-density-future-estimates/data-download). I am trying to solve how many ...
2
votes
1answer
262 views

Extract raster information based on polygon features

I have a population dataset in raster format (each pixel has a value showing number of people in that pixel) and a polygon shapefile with 10 districts. What I need, is to calculate population for each ...
2
votes
1answer
111 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 ...
2
votes
1answer
933 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 ...
2
votes
1answer
2k 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 ...
2
votes
1answer
159 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 ...
2
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0answers
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 ...
2
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0answers
52 views

Making population estimates over large areas for emergency? [closed]

I'm a meteorologist in Florida trying to encourage people to evacuate barrier island areas of south Florida earlier rather than later because of the very real potential of a landfall from a strong ...
2
votes
0answers
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 ...
1
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2answers
88 views

Population Change [closed]

I don't know if this site does general human geography, but since it's the only geography site I found this is the question. Population change takes into account 'growth rate' (which includes births ...
1
vote
1answer
1k views

Multiplying Raster Value with Pixel size using QGIS?

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 ...
1
vote
1answer
148 views

Calculating Population Within Buffer in QGIS

I am new to QGIS and GIS systems in general. I have a shapefile of zip codes with associated populations inside them. I also have random lat/long points. I am trying to find the number of people ...
1
vote
1answer
634 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 ...
1
vote
1answer
3k 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 ...