OpenGeofiction
Thilo has created a new version of his handy scale tool:
http://tile.opengeofiction.net/util/map_scale.html?map=13/20.73/86.72&map2=x/38.89/-77.04&pxpt=0.277
It’s a split screen with the OGF world on one side and the real world on the other, shown at the same scale. Each side can be moved around independently, so you can compare anywhere in OGF with anywhere in the real world. By switching layers on the right, you can also compare any two places in OGF. Comparisons can be shared with other mappers by copy/pasting the URL.
As in the previous version, zooming by mouse wheel or double-click is disabled, but there is a zoom control (& measuring tool) in the upper left corner. You can also set the zoom by entering a value into the “Zoom” or “Scale” input fields and hitting “Enter.” If you want the number in the “Scale” field to be accurate, the “pxpt=_____” part of the URL must be adjusted for the pixel pitch of your monitor.
Discussion
Comment from martinum4 on 26 May 2017 at 13:54
Really nice :) Thanks for this nice site, it kinda reminds me of the OSM-German-Style comparison page (Of which i don’t find the link right now) On a side note maybe change the OGF-Zoomlevel 0-18 to OSM so that streets have the same width?
Kind regards
Martin
Comment from thilo on 26 May 2017 at 14:54
Maybe I should explicitly point out that OGF and real-world maps can be selected on both sides. So the scale tool can also be used for size comparisons between OGF sites, or between different real world locations as well.
IMO the main point is to enable easy size comparison between locations at different latitudes, which is normally hampered by the underlying Mercator projection. Unfortunately, if the latitude difference is too large, this will inevitably cause the two maps being rendered in different zoom levels, which then will give the impression of different street widths.
Comment from Portopolis on 26 May 2017 at 18:42
Good tool can finally compare realistically my cities to the real world and OGF examples.
Comment from bhj867 on 26 May 2017 at 21:43
Some of my real world comparable city inspirations in size. Here, I can finally visualize the massive undertaking I have undertaken. Ugh, I will be on this site for a long long time.