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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37 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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23 views

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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38 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
33 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?
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1answer
135 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 ...
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54 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 ...
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1answer
125 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 ...
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1answer
57 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
30 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 ...
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1answer
92 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 ...
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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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1answer
76 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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230 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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1answer
49 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 ...
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2answers
488 views

Creating a population dot density map at the block group level in QGIS

I'm new to QGIS, always used ArcMap, and I'm struggling to find out how to best display population density at the block group level for a county (the most granular level of detail for census geography)...
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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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57 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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1answer
589 views

GIS data in Sweden [closed]

Does anyone know where to obtain GIS data relating to Swedish postcodes - shapefiles, population and point location data? I'm interested in both open data and licenced (purchased) data if it is ...
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1answer
188 views

How do you aggregate attribute table data at LSOA level to MSOA level?

I have population data stored at the LSOA (Lower layer Super Output Area) but I want to aggregate the data into MSOA (Middle layer Super Output Area). I have the shapefiles for both LSOA and MSOA - ...
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1answer
286 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
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1answer
136 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 ...
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1answer
64 views

How can I transfer the values of a grid of smaller polygons to another grid with larger polygons in ArcGIS?

I have a population density grid containing 100x100m polygons. I would like to transfer the density values into an existing overlaying grid of larger polygons (250x250m). This might of course include ...
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1answer
83 views

Estimating population increase [closed]

How can I estimate the population in 2020 at a given area if you know that the current rate of increase is 1.25%/year? What tools do I need to in a GIS Software to make the calculation?
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1answer
239 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 ...
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119 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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0answers
96 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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2answers
245 views

How can I calculate community populations with CIESIN / Facebook's new High Resolution Settlement Layer data?

Facebook's Connectivity Lab and the Center for International Earth Science Information Network (CIESIN) have released map data which offers unprecedented resolution in terms of population mapping. By ...
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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 ...
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1answer
203 views

Marker-width determined by population in animated bubble map. CARTO Builder

I'm trying to put together an animated map of population data for two different species on five different islands. I would like the population of each to be displayed as a standard marker whose width ...
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2answers
605 views

Where do I get data for density per city in the USA or Europe?

Basically I need the data this infographic uses, the density per city or better yet per km square. USA or EU is indifferent, need it for a project.
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49 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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1answer
128 views

Seeking land use/ land cover map, population density map for states of Gujarat and Maharashtra (in India)?

I need to find land use /land cover and population density layers for the states of Gujarat and Maharashtra in India.
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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 ...
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1answer
234 views

Finding UK population GIS data by city for free?

I am looking for some gis data for free of the UK population by city. I have found some in excel files but I am looking for other data formats(shapefile? CSV? I am not sure), data divided in smaller ...
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1answer
62 views

weighted point data interacting with linear data

I am looking for a way to test a hypothesis; "the closer my point feature is to my line feature (both vector), the higher the score of C will be" (for other sections of my research so far I have ...
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2answers
193 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
154 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
123 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
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 ...
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1answer
619 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
337 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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1answer
110 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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504 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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67 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 ...
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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)?
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1answer
575 views

Spanish municipality level shapefile 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 find ...
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0answers
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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1answer
493 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
191 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 ...
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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 ...