> So, whatever maps I upload on mapwarper, I should update the Google docs
for corresponding Planning District/Page No reference to the mapwarper
link. Right ?

Yes


> Also would like to know the plan forward to integrate the planning
district wise maps onto a single platform.

For a start we may want to expand Nikhil's map https://answerquest.
github.io/bangalore-landuse-existingVproposed.html with the more detailed
maps when zoomed in. This would require some tweaking of the code to get
right, maybe someone experienced with JS can help?

The folks at opencity.in have a vision to create a  ward level information
explorer for all our cities, so that could be the final place. The have
scraped quite a bit of data and making it available here:
http://opencity.in/content_type/map

An additional data layer is the plot level property tax detail which
indicates wether a plot is paying commercial or residential tax:
http://bbmp.gov.in/geptis/web/gis/home

> After rectification, is vectorization also in Plan?

Not at this time. Digitizing these maps would be a fairly large project on
its own.

> For each quadrant, any verified GCPs are available or we choose it
from topoheet?

There are no verified gcp's, you can get a fairly good result by picking
easily identifiable spots from the maps like a major junction. A visual
guide for rectification has been documented: http://opencity.
in/explainer/georeferencing-image-maps-on-to-a-gis-map

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