Help in extracting Mumbai's Development Plan 2034 as Shapefile

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akshit Shah

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Oct 21, 2019, 8:13:32 AM10/21/19
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Dear Datameet Memebrs,

I want your help in extracting Development Plan 2034 of Mumbai from their web portal <https://dpremarks.mcgm.gov.in/dp2034/>. I want the whole Landuse with plot boundaries and its metadata (CTS no., DP Remarl, Reservation, etc.) in GSI as a vector shapefile. Can anyone please help me in doing so?

Alternatively, the Development Plan 1991 of Mumbai has been hosted by UDRI on their portal <http://www.loginmumbai.org/map.html#>. Can we extract this as well?

Thank you in advance.

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Warm Regards,
                                                                 
Ar. Akshit Shah
| M.Tech Student, RCGSIDM, IIT-KGP |
| B.Arch, VNIT Nagpur |
________________________________
Indian Institute of Technology
Kharagpur, West Bengal, 
721302, India

Aditi Nair

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Oct 21, 2019, 12:21:05 PM10/21/19
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I would also be interested in this accessing this information.

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ADITI NAIR
MS DESIGN AND URBAN  ECOLOGIES
PARSONS SCHOOL OF DESIGN
SCHOOL OF DESIGN STRATEGIES

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M 914 (410) 1981

The New School

Nikhil VJ

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Oct 21, 2019, 2:12:14 PM10/21/19
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Hi,

Great to know they're finally moving from PDFs to zoomable maps! One thing I had really hoped for was for people to pin-point exact locations in the DP and talk about that, instead of just making grand reports with overall stats.

So again the data you see on this site is coming from a map server that pre-renders the data and sends stuff across as broken down image tiles.

Precisely to prevent site visitors from scraping the original vector data.

I'm guessing the bureaucracy would have consented to this move (from PDFs to actual map) only under strict conditions that it must not be scrape-able.

All the best.. if somebody does find a way to break through though, I can imagine the whole thing will be taken down and that will be regrettable, because this is a really good leg-up for the urban planning sector in India and I'd like to see the same happen in Pune as well. Between PDFs and this I prefer this even if both options aren't open.

A longer approach could be to share examples from Europe/US of cities releasing such full data openly and persuade/petition these folks with that. Again, all the best for that. And when one day some municipal corporation in India does do this, we should congratulate and praise them like anything so that others are encouraged too.

Yet another approach, and given the target area is Mumbai, this might actually have a chance: get a price from the bureaucrats for releasing this data publicly, and collectively crowdfund it. Just consider the combined purses of all real estate companies and high profile ngo's operating in this region that would want this. If someone from the relevant govt office is seeing this, c'mon guys, give a quote!

Regards
Nikhil VJ

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akshit Shah

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Oct 22, 2019, 3:53:17 PM10/22/19
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Hi,

Thanks Nikhil VJ for underlining the fact that we are still far away from free data regime prevailing in western countries. I already approached head of Development Plan department at MCGM and their typical reply was that "we can not share this data due to security reasons !!, even to share this with MMRDA (Mumbai Metropolitan Region Development Authority) we have signed non-disclosure bond and stuff. 

I don't understand what threat can a publicly available development plan could pose to authorities !!!  just because its in a vector format. 26/11 happened even before the GIS era in India. Rationally, the amount of help in urban planning research through such dataset is far more greater than any security threat (that you guys may think of). but it seems our bureaucrats doesn't understand such things (may be because Architecture/Planning is not available as an optional subject).

Coming to the extraction point, there are multiple long routes to achieve the objective of getting vector shapes. I have tried one of them by geo-referencing the one PDF tile using AutoCAD Map & then exporting it layer by layer to QGIS. but I could not achieve accurate scale and geo-referencing. Also the task is too tedious considering the scale of city, the development plan is divided into more than 150 tiles which will take too long to accomplish.

Alternatively, every concerned individual can populate landuse data in OSM for a specific region, this way it can be made available in vector. But the manual input for metadata is also a time consuming challenge.

Lastly we need some other idea to cut short this task, as authority is not going to handover it so easily.

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Warm Regards,
                                                                 
Ar. Akshit Shah
| M.Tech Student, RCGSIDM, IIT-KGP |
| B.Arch, VNIT Nagpur |

Devdatta Tengshe

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Oct 23, 2019, 12:08:09 AM10/23/19
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It is possible to scrape the data from here, but we need to know what layers to scrape. Unfortunately, their naming convention is non-existent, and unless we have some detailed knowledge on what each layer means, it will be a futile exercise, even if we get the data.

Regards,
Devdatta


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Nikhil VJ

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Oct 23, 2019, 5:01:38 AM10/23/19
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Hi, the second website shared 1991 DP:
.. is vector!

Right-click > Inspect > Network > XHR . Turn on a layer on the map. Catch and save the response.

Here's one site that helps convert the json to csv:

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Cheers,
Nikhil VJ
https://nikhilvj.co.in


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Abraham Daniel Raj

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Oct 23, 2019, 8:05:59 AM10/23/19
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Hi Nikhil Vj,


After turning on a layer on the map. How to catch and save the response. Can you inform?



With regards,
Daniel


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Nikhil VJ

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Oct 23, 2019, 2:06:05 PM10/23/19
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Hi Abraham,

This screencast might help.


Regards
Nikhil
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ADITI NAIR
MS DESIGN AND URBAN  ECOLOGIES
PARSONS SCHOOL OF DESIGN
SCHOOL OF DESIGN STRATEGIES

naira012@newschool.edu

M 914 (410) 1981

The New School

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Warm Regards,
                                                                 
Ar. Akshit Shah
| M.Tech Student, RCGSIDM, IIT-KGP |
| B.Arch, VNIT Nagpur |
________________________________
Indian Institute of Technology
Kharagpur, West Bengal, 
721302, India

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akshit Shah

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Oct 24, 2019, 8:27:32 AM10/24/19
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I checked the scrape-ability of layers on Arch GIS map server, but there too the landuse plan is uploaded as an image file. seems we need someone from inside to help us get vector layers.

On Wed, Oct 23, 2019 at 9:38 AM Devdatta Tengshe <devd...@tengshe.in> wrote:
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Naraina Damle

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Oct 29, 2019, 10:50:01 AM10/29/19
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Hello, 

Some thoughts after reading the various comments. 

I have worked on similar data for Delhi about 10 -12 years ago. 
Things might have changed now. But I guess the following. 

NIC (National Informatics Center) started with the original base data. They have very very strict data sharing policies. 

The vector data in based on NIC servers. They serve it to Municipalities and strictly monitor the usage. 
Municipalities draw on top of the base layers. The condition is that they can not even share that Drawn data with anyone outside a designated ROOM in soft copy.

If they find violations they will stop serving Vectors (in case of Delhi DJB they were serving vector base layer data to DJB) and only serve Rasterized base data. 

I earned some money in a project to RE-Digitise DJB's own drawn layers from Paper Prints to give to a consultant.

 this is much much better that Paper prints. 

Digitise the Area of Interest.

(based on my guesswork)
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ADITI NAIR
MS DESIGN AND URBAN  ECOLOGIES
PARSONS SCHOOL OF DESIGN
SCHOOL OF DESIGN STRATEGIES

naira012@newschool.edu

M 914 (410) 1981

The New School

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Warm Regards,
                                                                 
Ar. Akshit Shah
| M.Tech Student, RCGSIDM, IIT-KGP |
| B.Arch, VNIT Nagpur |
________________________________
Indian Institute of Technology
Kharagpur, West Bengal, 
721302, India

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