Found a couple of wonderful old maps of Bangalore from the British Library while trying to understand the history of my area:
- 1800 http://mapwarper.net/maps/26791#Preview_tab - 1935 http://mapwarper.net/maps/26792#Preview_tab The 1935 map is especially detailed and shows all the old tanks and waterways that the city has now lost. Also of interest is the location of all the original settlements and how areas like Indiranagar and Koramangala used to be 80 years ago. On Fri, Dec 15, 2017 at 9:14 AM, Nikhil VJ <[email protected]> wrote: > Ok here's the page that will help you map any two geo-referenced rasters > side by side and fade them over satellite view etc: > > https://answerquest.github.io/overlap-custom-side.html > > Screenshot: > > <https://i.imgur.com/9ccbMSG.png> > > > By the way, in case you have done the geo-referencing on QGIS / ArcGIS and > have a big GeoTIFF sitting on your laptop and don't know how to put it on > the web, > 1. Login to Mapbox Studio > 2. Upload the GeoTIFF file as a dataset. Note the id. > 3. Note your mapbox accesstoken. > 4. Construct the tile URL as follows: > "https://a.tiles.mapbox.com/v4/"; + mapboxID + "/{z}/{x}/{y}.png?access_token=" > + accesstoken > 5. Paste in the Left or Right textbox in the above page. > > PS: If you liked it then click the appreciation link.. > > -Nikhil > Pune > > On Tuesday, December 12, 2017 at 4:58:27 PM UTC+5:30, Arun Ganesh wrote: >> >> > 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 >> >> -- > Datameet is a community of Data Science enthusiasts in India. Know more > about us by visiting http://datameet.org > --- > You received this message because you are subscribed to the Google Groups > "datameet" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > For more options, visit https://groups.google.com/d/optout. > -- Datameet is a community of Data Science enthusiasts in India. Know more about us by visiting http://datameet.org --- You received this message because you are subscribed to the Google Groups "datameet" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. For more options, visit https://groups.google.com/d/optout.
