Wardwise population density

[blessing isaiah]

Hi all, 

Where can I find wardwise population density data for Bangalore.

Best regards,

Blessing Isaiah

[Mitul Jhaveri]

Do we have data on district wise population density?

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[Suvajit Sengupta]

Hi,

I collated Ward wise 2011 Census data for Bangalore here : https://github.com/suvajit/opendata/blob/master/BBMP/data/CSV/Bangalore_Ward_Population_2011.csv

Check if it is useful else you have to search in http://censusindia.gov.in/ 

But its 2011 data, need some extrapolation to derive population in 2019.

Regards,

Suvajit

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[Mayur PC]

Maybe you can use the ward wise voters list to derive ward density. If so there are places you can get voter list like this one for 2015: https://bengaluru.citizenmatters.in/wardwise-list-of-voters-in-bangalore-bbmp-election-2015-7653 

[blessing isaiah]

No we dont

On Sun, Apr 19, 2020 at 5:57 PM Mitul Jhaveri <mit...@gmail.com> wrote:

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[Sarabjeet Matharu]

Hi

Is anyone compiling district wise population density? If not, I'll start the project and would love inputs from more experienced members of this group. 

Do let me know if you're interested. Any suggestions on how to collaborate / track progress would also be welcome. 

Thanks, 

Sarabjeet

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[Aalok Sathe]

Hi,

I dont know specifically for BLR, but this might be a start:

It might be useful to see code I used to compute the same statistic for Pune wards:

from area import area
def areas(gjson):
    A = []
    for entry in gjson['features']:
        geom = entry['geometry']
        A += [area(geom) if geom['type'] == 'Polygon' else 0]
    return A

   

wardcrds = [avg_coords([ward]) for ward in wards['features']] # wards is a geojson object (dict/json)
wardarea = areas(wards)
wardpops = [get_ward_pop(ward['properties']['prabhag']) 
            for ward in wards['features']]
warddens = np.array([pop/ar for pop, ar in zip(wardpops, wardarea)])

the notebook is linked here: http://s000.tinyupload.com/?file_id=00023234941653471825

Approach:

• Use 2011 census data to get population
• use an existing geojson mapping of wards
• Use python package `area` to compute area of the region

example usage and heatmap visualization using leafletJS is available online at: https://punecovidcontain.herokuapp.com/

similar can be done for districts

On Tuesday, April 28, 2020 at 6:06:25 PM UTC+5:30, Sarabjeet Matharu wrote:

Hi

Is anyone compiling district wise population density? If not, I'll start the project and would love inputs from more experienced members of this group. 

Do let me know if you're interested. Any suggestions on how to collaborate / track progress would also be welcome. 

Thanks, 

Sarabjeet

On Wed, Apr 22, 2020 at 6:48 PM blessing isaiah <blessi...@gmail.com> wrote:

No we dont

On Sun, Apr 19, 2020 at 5:57 PM Mitul Jhaveri <mit...@gmail.com> wrote:

Do we have data on district wise population density?

On Sun, 19 Apr, 2020, 2:30 am blessing isaiah, <blessi...@gmail.com> wrote:

Hi all, 

Where can I find wardwise population density data for Bangalore.

Best regards,

Blessing Isaiah

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[Nishadh K A]

This site https://sedac.ciesin.columbia.edu/data/set/gpw-v4-population-density-rev11 provides global population density in ~1km resolution, which can be further used with ward polygon by intersection to get the density.