Wednesday, December 7, 2016

Seeing contours for a location

1. Go to http://www.gpsvisualizer.com/map_input
2. If you have a .kml of your chosen location, upload it. If it's in another format, you can use geojson.io or mapshaper.org to convert it to .kml or .gpx.
3. If you don't have any file, find your lat-long location and type it into the given textbox in the way they've instructed.
4. Click on "Draw the map" button. In the window that opens, change the map layer to "OpenTopoMap" or "OpenCycleMap". They show the contours with height in meters.
5. Go back to the Make page and change the settings, like width n height default zoom level etc to get the map you want.
6. There will be a link to download the page showing the map to your computer, so you can just open in next time (still needs net) without having to enter all these parameters.

Printing / Taking large screenshot:
1. Do this on Firefox browser; Chrome doesn't have this feature yet.
2. Create your map with larger width and height, and high zoom level. Through trial and error, adjust these to get just the right large map window (use scrollbars to move in it) that shows all of your area at the zoom that you want and you don't need to click-drag the map.
3. Now screenshot the entire window (including the portions out of view). Press Shift+F2, a command console opens at the bottom. Type in this command:
screenshot --fullpage

4. The screeshot is saved either in the downloads folder of your device, or it asks you where to save it and what name to give.

Some more tools:

https://mappingsupport.com/p/gmap4-free-online-topo-maps.html
fullscreen:
https://mappingsupport.com/p/gmap4.php?ll=18.751778,73.551396&z=15&t=t1

http://contourmapcreator.urgr8.ch/

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