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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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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36
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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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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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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;
A few hours ago it ...
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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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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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32
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Population density grid confusion
I have a multi polygons data where red means most populated and white means less populated. I created a gridded population density (image on the right) out of them, but the result seems not quite make ...
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Rounding imprecision when performing area-weighted interpolation of population (discrete) data
I guess this is more a conceptual question.
I'm performing area-weighted interpolation between two very granular geometries, and I have three variables: population_total, population_men and ...
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55
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Using a postcode sector map with a population attribute, create clusters of those sectors to have a total population within a defined range
I have a postcode sector map in QGIS and one of the attributes is 'population'. I am trying to create a map showing what postcode sectors would need to be clustered together in order to split the ...
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How to impute country to a global population grid?
Have following gridded population data (available from the History Database of the Global Environment, HYDE)
ftp://ftp.pbl.nl/../hyde/hyde3.1/hyde31_final/1980ad_pop.zip
It looks like this:
ncols ...
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123
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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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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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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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125
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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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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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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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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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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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26
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Reducing the resolution of population data but getting 1.5x the actual population values
I am trying to reduce the resolution of a raster to the resolution of another dataset for later processing. In other words, I would like to reduce the population image by summing the number of people ...
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WorldPop 2020 age structure Jakarta
I am trying to download population data for a bunch of world cities using WorldPop/GP/100m/pop_age_sex_cons_unadj data set.
It has has worked for all the cities I'm looking at except Jakarta.
In the ...
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Clip and return numerical amount of population density
I have 2 layer data. 1st is the choropleth data of population density per sub-district (in gradient color of red to white). And the 2nd is the service area of ambulance service (in the color of green)....
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Calculating tract growth rate
Trying to calculate growth rate from the year 2000 to 2021. The only bump I'm coming across are the missing tracts. Main issue being where one tract in 2000 would be split into two for 2021. I am ...
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Estimate population of Nabweru subcounty using composite image of night time light from VIIRS ,NDVI and LST using Google earth engine
am currently doing a research project due for presentation and its effectiveness in estimating population using nighttime satellite imagery. a case study is Nabweru sub-county KLA uganda. I was to use ...
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US population data entity at a level of granularity smaller than zip code tabulation area? Neighborhood, housing tract, section of town, etc
Is there a data entity that would correspond to population clusters within a zip code tabulation area? Something that would correspond, even if only roughly, with a neighborhood or housing tract or ...
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How to use 1km2 or 10km2 vector grid to classify urban areas in a population grid raster data?
I have:
A population density grid raster file converted to point shapefile.
And a vector grid and used zonal statistics to estimate the total population in each grid cell.
I want to mask out or ...
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1
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91
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Calculating population of only urban areas from a raster layer
I have a raster file of population data downloaded from www.worldpop.org.
I also have a shape file of township polygons but what I am trying to do is to only
calculate population of urban areas not ...
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How do I tell if a higher rate of (whatever) is due to higher population, or if its actually significant?
I hope that makes sense-- it's a bit difficult to word. We all know that more stuff happens in the places with more people, and less stuff happens in places with less people. What are some strategies ...
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Population data rendering differently per file
I'm trying to compile all the various population density .TIFF files from Meta into one QGIS file but each tile seems to have a different scale. I can't figure out which variable I need to change to ...
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Does GADM have level 2 population data availability for African countries
I was wondering if GADM have level 2 population data availability for African countries (as many years as possible)?
If not, would anyone know other resources that may have?
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The proportion of population covered by created isochrones in QGIS
I created isochrones using Iso-Area as polygons algorithm is QGIS. I would like to calculate the proportion of the population covered by the created isochrones. Is there any tool in QGIS to do this?
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121
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Splitting Polygon by Population?
I'm new to GIS. I'm working on a project right now that is about assisted living facilities in my state. I have a map of my state that I've divided into six regions by creating Thiessen polygons. The ...
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260
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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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396
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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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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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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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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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652
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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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355
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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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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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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?
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How to only get the population per country with World Bank Open Data
I try to get the population of every country with an API, but I looked at the World Bank Open Data but I can't find just the population of each country.
I looked, and I find lots and lots of data ...
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