[datameet] Re: PM2.5 Pollution Trends in Indian Districts - 1998 to 2014 !!

[Sashikumar N]

Here is a recent global map showing PM2.5 air pollution
https://www.reddit.com/r/dataisbeautiful/comments/9phjqt/oc_8_in_10_people_in_the_world_breathe_air_above/

data source(downloadable):
http://sedac.ciesin.columbia.edu/data/set/sdei-global-annual-gwr-pm2-5-modis-misr-seawifs-aod

regards
sashi

On Monday, January 16, 2017 at 2:46:11 PM UTC+5:30, Sarath Guttikunda wrote:
>
> Dear All,
>
> an open access database on PM2.5 pollution in Indian Districts
>
> The original gridded global PM2.5 files are available @ 
> http://fizz.phys.dal.ca/~atmos/martin/?page_id=140
>
> Individual gridded, state, and district level maps for years 1998 to 2014 
> for India are available here @ 
> http://www.urbanemissions.info/india-satpm25
>
> The state and (640) district boundary shapefiles used for this analysis is 
> from 2011 Census, are available @ 
> https://github.com/datameet/maps/tree/master/Districts/Census_2011
>
> Data visualization of the state and the district level data for all the 
> years @ knoema.com
>
> https://knoema.com/jwqgej/pm2-5-pollution-trends-in-indian-states-1998-to-2015
>
> https://knoema.com/xhafstg/pm2-5-pollution-trends-in-indian-districts-1998-to-2015
>
> All the re-analysis and interpretations are sole responsibility of the 
> authors @ UrbanEmissions.Info
> Please send your comments, questions, and data requests to 
> sim...@urbanemissions.info 
>
> With regards,
> Sarath
>
> --
> *Dr. Sarath Guttikunda*
>
> *http://www.urbanemissions.info *
>
> *http://www.indiaairquality.info *
>

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[datameet] Re: Building footprint shapefile

[Nikhil VJ]

Yep, same story in Pune.

Do try around, but In case your situation is that you are going to get 
nothing from official sources and you really want to have something rather 
than nothing, then you can try the alternative strategy:

India's cities already have seen quite a lot of mapping done on 
OpenStreetMap, including building footprints. This is a screenshot of a 
place in Delhi:




If you want data for a limited area, then edit OSM for that area, add in 
the few missing buildings that might be there, then extract the data. A 
decent enough area can be covered in a few hours' time. (note: watch out 
for satellite images having offsets. GPS traces and already-mapped items 
will help for that)

If you have interns, you can set them on the job. Or if you have some 
budget you can hire people. This takes minimal skills so you could consider 
it on par with a data entry job.

Tasking manager can be used to split the area into grids and systematically 
cover the area. teachosm.org is a good place to create tasks that aren't 
emergency-types (have to get in touch with the admins for creator access, 
else I have so you can contact me). tasks.openstreetmap.in is also there 
which is managed by few people who are on this group, there is a blocking 
issue currently but it should get resolved soon.

You can also organise an OSM mapping event at an urban planning course 
class or so, if you can combine your work with learning benefit for the 
students.


- Nikhil VJ
Pune

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[datameet] Re: Building footprint shapefile

[Naraina Damle]

HI, 

My answer may not be useful hence I did not answer earlier.

let me answer from different points of view. 

1. You need a FREE ( I Guess) vector map of building footprints of Delhi. 

Now the question is,  does such a data exist .. The answer is YES. 

Is it free ? Highly unlikely. 

I have been gathering almost every free data out there from internet since 
about 2000 and have not seen a free data with individual building 
footprint. 
Nearest that is available is populated area boundaries.


2. Where does a Building footprint Data for Delhi exist, If at all? 

 YES, This data exists and it is with NIC. National informatics centre. 

They give this data to other government agencies for GIS purpose. But they 
try to protect with all their might. 

I have seen this data myself and worked on a derivative as a subcontractor 
for a government department.
But it is was served through NIC servers in a Room in the client department.
They were not allowed to access that data and  even data they created 
themselves for their own purpose outside that room. This was about 10 years 
ago. 

Do not know the present situation.









On Thursday, October 11, 2018 at 9:56:14 PM UTC+5:30, Harikesh Singh wrote:
>
> Hello Everyone,
> I  need a building footprint shapefile of Delhi region, if anyone has any 
> information regarding this please let me know. 
> Thanking You
>
>
>
> *RegardsHarikesh*
>
>

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[datameet] Re: Suggestions required regarding Web Based Editable GIS system

[Naraina Damle]

HI, 

Thank you

I just tried it. 
It works. Not gone in to deep. Will check out later.

On Friday, October 12, 2018 at 1:17:26 AM UTC+5:30, Nikhil VJ wrote:
>
> Hello Mr.Dilip,
>
> I have been working on ways to show geo-data in both map and tabular form 
> and enable the user to work with them in a synchronized way. You can see 
> one live example here:
>
> https://static-gtfs-manager.herokuapp.com/stops.html
> (page will take some time to load as its on a testing server)
>
> Protection / privacy can be done via password / login system (it's even 
> possible to encrypt just one page using HTML and JS, one need not set up a 
> whole CMS etc). In the page linked above you can view and make unsaved 
> edits but to save changes to DB you need a password.
>
> I've been able to load over 40k data points on that same page without 
> crashing the browser, so scaling up is not an issue.
>
> A server-side operation is required if you want centrally managed data and 
> you want to save the changes to server. But if you're fine with users 
> loading their data and saving their work locally at the end, then this can 
> be pulled off with a server-less "static" web page too.
>
> The code for the project linked above is available open source here 
> . The main 
> technologies at work are Leaflet  for map, Tabulator 
>  for table, and python for server-side 
> loading/saving of data.
>
> So I'll say yes it's possible and can be done with both advanced and 
> simple options.
>
>
> -- Nikhil VJ
> Pune, India
>
>
> On Wednesday, October 10, 2018 at 10:26:29 AM UTC+5:30, Naraina aka Dilip 
> Damle wrote:
>>
>> Hello to everyone, 
>>
>> I have a requirement where a small, single town level GIS system 
>> consisting of only Vector features is being developed. 
>>
>> The Data creation will be done offline on a local computer. 
>>
>> After the GIS data is ready it needs to be hosted on Web based server 
>> where 
>> 1) It can be viewed by Only Authorised users. One a desktop based 
>> computer as well as a handheld device with GPS capability.
>>
>> 2) It should be possible to edit the Attribute data of the features 
>> remotely and save/independently export to a change log file or something 
>> similar.
>>
>> 3) Creating/Deleting features or Features Geometry is not Important / May 
>> not be needed.  But good to have.
>>
>>
>> What are the suggestions for a Opensource/ Economical Paid Servers 
>> capable of doing this 
>>
>>
>> I looked at MapGuide https://mapguide.osgeo.org/
>>
>> and 
>>
>> https://mapserver.org/introduction.html
>>
>>
>> Would like to hear from Anyone having experience with these or other 
>> technologies. 
>>
>>
>> Thanks in advance 
>>
>> Dilip Damle
>>
>

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Re: [datameet] Road accidents in India

[Vaishnavi Jayakumar]

Nothing to do with data, but FYI.

https://www.thebetterindia.com/162586/haryana-road-accident-death-news/


On Thu 11 Oct, 2018, 9:30 PM Naveen Francis,  wrote:

> Thanks Vaishnavi.
>
> 800 black spots are on NH alone. MORTH releases only numbers, not the
> location.
> http://morth-roadsafety.nic.in/index1.aspx?lsid=491&lev=2&lid=442&langid=1
>
> Thought of mapping blackspots on NHs.
>
> Thanks
> naveenpf
>
> On Thursday, 11 October 2018 16:48:04 UTC+5:30, Vaishnavi Jayakumar
> (Inclusive India) wrote:
>>
>> Naveen,
>>
>> There are 350 black spots here in recent Kerala document
>> ,
>> plus some useful info on identification and prioritisation.
>>
>> This recent article quotes 400 for Punjab
>> 
>>
>> That doesn't jibe with the March 2018 PIB release
>>  stating
>> approximately 800 blackspots for whole of India. Maharashtra  alone
>> 
>> has 634!
>>
>> Delhi 2017
>> https://delhitrafficpolice.nic.in/wp-content/uploads/2018/10/chapter-6.pdf
>> 
>>
>> UP http://uppwd.gov.in/pdf/BlkSptStatus.pdf
>> 
>>
>> Chandigarh
>> https://www.researchgate.net/publication/313858691_Accident_Black-Spot_Validation_using_GIS
>> 
>>
>> Private parties
>> 
>> handling O&M could also have.
>>
>> They are supposed to be fixed and therefore the list will keep changing.
>>
>>
>> ---
>> *VAISHNAVI JAYAKUMAR*
>> http://about.me/vjayakumar
>>
>>
>> On Tue, 9 Oct 2018 at 06:48, Naveen Francis  wrote:
>>
>>> Hello,
>>>
>>>
>>> 2017 data is updated now in this website.
>>> http://missionroadsafety.com/
>>>
>>>
>>> 1. Can we get data for blacks spots locations in India ? [1]
>>> 2. Is there any road accident map like this http://www.collisionmap.uk/
>>> ?
>>>
>>>
>>> [1] MORTH Road Safety website :-
>>> http://morth-roadsafety.nic.in//admnis/admin/showimg.aspx?ID=302
>>>
>>> Thanks,
>>> naveenpf
>>>
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