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.
142
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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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Shapefile of county population
I have been able to find information such as the 'Social Vulnerability Index' (SVI; https://www.atsdr.cdc.gov/placeandhealth/svi/data_documentation_download.html) and shapefiles related to census ...
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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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41
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Download WorldPop data (100m) in R
I am trying to download population count data (100m pixel size) from WorldPop using the R package wpgpDownloadR. The code:
# install.packages("devtools")
devtools::install_github("wpgp/...
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How to colour categorise population estimates using GRID3 Settlement Extents in ArcGIS Pro [closed]
I am new to ArcGIS Pro and geospatial data in general. I have downloaded settlement extents data from https://grid3.org/. I had naively thought the data would display the population in a heatmap like ...
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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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21
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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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130
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Importing squares indicated through EPSG:3035 into QGIS and merge with shapefiles
I have some data on population estimates in Germany for 1km by 1km squares. (Data can be found here: https://www.destatis.de/DE/Service/EXDAT/Datensaetze/bevoelkerung-geo-mobilfunkdaten.html when you ...
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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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164
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Calculating population in catchment area in QGIS
In QGIS 3.22.0 (Biatowieza) by means of the "OpenRouteService" Plugin I was able to get isochrones for my point layer.
The "ORS Tools" Plugin calculates the population within the ...
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153
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QGIS - How to split and display Population Data according to District/Province?
I'm a complete beginner in QGIS, currently self-teaching myself through Youtube.
Current Problem: To split and display population data according to district/province
Project Background: To measure ...
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255
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How do I calculate population within radius on Google Earth Engine?
I'm trying to calculate the population within a specific radius within a specific country using Google Earth Engine. My plan is to use reduceToVectors to convert the population values into a ...
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How would I calculate the sum of the values of a band around a specific pixel in Google Earth Engine?
I'm trying to calculate the population within a certain radius around a specific pixel, but I don't know how to define the geometry of the region to reduce.
This is what I would imagine it might look ...
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64
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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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73
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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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16
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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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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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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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68
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What scale to specify when getting a summary statistic for an entire country?
I am trying to calculate the population in a country as follows:
//Population per square km:
var pop_count = ee.ImageCollection("CIESIN/GPWv411/GPW_Population_Count").filter(ee.Filter.date('...
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273
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Splitting population between overlapping polygon features
I have a quadratic grid with a different population in each square as the first layer and I have polygons that I made with the ORS Plugin as the second layer.
In my previous question, I got some good ...
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520
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Counting population within polygons
I am really new with QGIS
I have a quadratic grid with different populations in each square and I have made polygons with the ORS plugin. The polygons cover some squares in full and some squares only ...
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161
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Calculating average elevation from given points layer and DEM
I am using QGIS 3.18. I have a point layer showing population estimates at the administrative center points and an aster digital elevation map. I'm trying to calculate the average elevation of these ...
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106
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Categorising raster data based on shapefile boundaries
I've tried searching for an answer but honestly I'm not even sure how to word my search.
I'm using Arc GIS Pro. I have two layers that I want to analyse.
The first layer is a shapefile and it covers ...
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4
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2
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476
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Note QGIS raster calculator defaults to not being accurate
[Edited title of post based on fact that @wingnut solved it]
I'm trying to normalise a population density map such as this one (e.g. to a maximum of 255). The maximum value in the file to begin with ...
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45
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Dividing value of polygon in polygon inside it [duplicate]
I'm working with population data. I want to divide the population value (labeled in the orange square)in the polygons inside it (blue polygons).
Any ideas?
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97
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How to control for population density?
My project requires me to control number of stores by population density in each neighborhood.
For instance, suppose I know neighborhood A has 10 stores and a population density of 100 people/sq mile ...
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1
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315
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Seeking data on population per postcode district in UK [closed]
I'm searching for a data set which contains the population of each postcode district (e.g SG1 or LE2) in the UK. I'm struggling to find this anywhere especially for free.
Is there anywhere I can find ...
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204
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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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266
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Creating buffer rings of equal population size using ArcMap
I am trying to create a shapefile of equal population size buffer rings. Similar to the procedure of creating multi-ring buffers of distance around a point, find the intersects of the buffers with a ...
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100
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Estimate population with two overlapping shapefiles
I have two levels of geography: blue polygons (18,000 districts) and black polygons (400 districts).
But, I only have population data for the blue areas
Is there a tool in Arc Map which will estimate ...
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53
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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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4
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List of Most Populated US Census Designated Places [closed]
I know I can find population totals for incorporated places here, but I'm unsure where to find a similar list for census designated places. This Wiki table seems to indicate this data is out there ...
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1
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256
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Splitting population data proportionally using Identity tool of ArcGIS Desktop
I am preparing a term project and I have the vector data of the roads and zones layer for to prepare rural access index in Istanbul. My zones layer also has the attribute nufus17 which means ...
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440
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Sources for population density map of Europe
I want to make population density map for EU where I can show populations of people aged about 65yrs, where can I get a EU shapefile and population Excel file?
Is there any EU shape file available ...
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Which site is best to download the freely available population data of Pakistan? [closed]
I need to know the population data and households of Pakistan. but some sites like Landscan required institutional email ids which I don't have. So I need a site where I can download the data with my ...
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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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1
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987
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Converting gray band from dataset to RGB with rasterio for population density
I am seeking a solution that provides me a range of values rather than the provided 0 and 255 from rasterio. That most likely meant that I had to set the photometric and bands and ColorInterp to ...
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4
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Population density: 1000 people/ km2
What does it mean when in certain publications they write population density (1000 people/km2)? Does it mean that they calculate the population density by dividing the number of people by the area of ...
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1
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483
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Getting population by country using Google Earth Engine
I was trying to get the population by country by using GEE. I tried the following code:
// world population 2015
var pop = ee.Image("JRC/GHSL/P2016/POP_GPW_GLOBE_V1/2015");
print(pop);
Map.addLayer(...
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47
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ACS Data Interpretation
I am working with ACS 5-Year Data at the block group level in ArcGIS, and was hoping someone could explain what one of the elements on my attribute table means.
I know that the B00001e1 is some type ...
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117
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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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705
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Clustering of points based on 1 or 2 attributes
In QGIS:
I have data of sightings of a particular animal that has been mapped as points. Some of these may be repeated sightings. I've classed the sightings according to 'SightCode' which represents ...
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4
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1
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406
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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?...
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281
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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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246
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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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153
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Dividing polygons into equal sub-regions based on population using QGIS? [duplicate]
I'm using demographic data in California by census tract, and I'd like to be able to group those census tracts into 4 regions with an equal population in each region. Any recommendations for how to do ...
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384
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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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92
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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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