Hi, Alternatively, one could also use geo-referencing in QGIS to create spatial data from PDFs. Are the results you are getting with the python script faster / more accurate? Would love to see it :)
On Tuesday, June 16, 2020 at 6:20:45 PM UTC+5:30, Dilawar Singh wrote: > > Hi Thej, Datameet > > After reading this, I went to SOI site and tried downloading few maps. I > could only find PDFs. And data.gov.in also love PDFs. > > I wrote a couple of scripts which I used to figure out boundaries and > extract data from curves in old PDF paper. It's a tricky business but I had > decent success (One python3 app is here > https://github.com/dilawar/PlotDigitizer). These scripts can also be > tweaked to fetch boundaries from PDF maps (no deep-learning business yet). > If datameet still struggling to find the boundaries from such maps, please > send a few samples to me. I can probably setup a web-service to upload the > map and get the GeoJSON if results are OK. > > best, > Dilawar > > On Tue, Jun 16, 2020 at 8:49 AM Naveen Francis <nave...@gmail.com > <javascript:>> wrote: > >> Nice writeup Thej, >> >> SOI point of view is completely different >> https://youtu.be/o1qMZZOia3c?t=3174 >> >> 'Don't take data, but starting using SOI services.' >> >> >> On Monday, 15 June 2020 11:11:43 UTC+5:30, Thejesh GN wrote: >>> >>> Team, >>> >>> I wrote a piece for EPW about the status of Open Data and How >>> communities like ours. Thank you for being an awesome community. The >>> article is open to all. >>> >>> Open Data in India: In a Restrictive Copyright Regime, Voluntary >>> Organisations Pitch in to Make Data Accessible >>> >>> <http://goog_1785098712> >>> >>> https://www.epw.in/engage/article/voluntary-organisations-india-counteract-states-copyright-regime-open-data >>> >>> <https://www.google.com/url?q=https%3A%2F%2Fwww.epw.in%2Fengage%2Farticle%2Fvoluntary-organisations-india-counteract-states-copyright-regime-open-data&sa=D&sntz=1&usg=AFQjCNHRdfqkI1ysuCRKyTn_IFfdXm1W_A> >>> >>> - This was pre covid-19, so a lot of things related to that are missing. >>> - Comments are welcome here on this thread or on this blog post >>> <https://thejeshgn.com/2020/06/09/open-data-in-india-in-a-restrictive-copyright-regime-voluntary-organisations-pitch-in-to-make-data-accessible/> >>> >>> >>> Thej >>> -- >>> Thejesh GN *⏚* ತೇಜೇಶ್ ಜಿ.ಎನ್ >>> http://thejeshgn.com >>> GPG ID : 0xBFFC8DD3C06DD6B0 >>> >> -- >> 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 data...@googlegroups.com <javascript:>. >> To view this discussion on the web visit >> https://groups.google.com/d/msgid/datameet/a5569aa9-6842-4a90-9127-33c9f603af50o%40googlegroups.com >> >> <https://groups.google.com/d/msgid/datameet/a5569aa9-6842-4a90-9127-33c9f603af50o%40googlegroups.com?utm_medium=email&utm_source=footer> >> . >> > > > -- > Dilawar > NCBS Bangalore > -- 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 datameet+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/datameet/0f8a0e81-dcb8-4398-af82-ec5da00d04d1o%40googlegroups.com.
