Hi Vaidya, You might be able to skip the manual tracing process that Devdatta linked to <https://groups.google.com/g/datameet/c/BGB-UeJqhpA/m/SFl4OgF9AgAJ> and pull out vectors directly, if your PDFs are made that way.
Rajesvari Parasa <https://github.com/rajesvariparasa> has successfully turned Delhi development plan's PDF into shapefiles. You can read the discussion about it here: https://groups.google.com/g/datameet/c/37uN8xnWrK0/m/2axI7AB-AQAJ Relevant snippet: 1. Extracting from PDF - It's one of those PDFs exported from Autocad or so where you can see multi-layers and turn them on or off. - Rajesvari used a command-line GIS tool called "ogr2ogr" to extract individual layers from the PDF into .geojson shapefiles. - There was a tricky bit where the output lat-longs were all like (716882.20,3166456.28) - a different CRS and we didn't know which. - I used http://projfinder.com/ to find it, then Rajesvari included CRS conversion into the ogr2ogr commands to produce proper shapefiles. - You can see all that in this repo: https://github.com/draftmpd41/layers_draft_delhi_master_plan_2041 - see the .bat file for the ogr2ogr commands -- Cheers, Nikhil VJ https://nikhilvj.co.in On Wed, Nov 30, 2022 at 9:56 AM Devdatta Tengshe <devda...@tengshe.in> wrote: > Hi Vaidya, > > This excellent post by Nikhil would be a good starting point: > https://groups.google.com/g/datameet/c/BGB-UeJqhpA/m/SFl4OgF9AgAJ > > Regards, > Devdatta > > > On Wed, 30 Nov 2022 at 08:49, Vaidya <vaidyanatha...@gmail.com> wrote: > >> Hi all, >> >> Wanted to know if it is possible to convert maps put out in pdfs to map >> files (shapefiles, geojsons or kml). >> This is regarding the sewage and water lines put out by BWSSB. >> The files can be found here: >> https://bwssb.karnataka.gov.in/info-2/BWSSB+GIS+MAP+Information/en >> >> Thanks, >> Vaidya >> >> -- >> 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/CAHVy6PF4-%3DES_YWNgJEyi6c6G6GhMizB%2B4iL6Lm3HQjwAU8b9Q%40mail.gmail.com >> <https://groups.google.com/d/msgid/datameet/CAHVy6PF4-%3DES_YWNgJEyi6c6G6GhMizB%2B4iL6Lm3HQjwAU8b9Q%40mail.gmail.com?utm_medium=email&utm_source=footer> >> . >> > -- > 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/CAOQOUMvSVZ6kpq3BQh8yB9FNKGeahBEjPsVnh2wOkRB7J%2BSPLQ%40mail.gmail.com > <https://groups.google.com/d/msgid/datameet/CAOQOUMvSVZ6kpq3BQh8yB9FNKGeahBEjPsVnh2wOkRB7J%2BSPLQ%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > -- 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/CAH7jeuNN4WO_-Q89pA01MBbc%3D38%3DR_uvhcpF2uAg5TD%2BY_5OdQ%40mail.gmail.com.
