About MapMartini

Have you ever wondered how big (or small) your neighborhood is, compared to the district you grew up in? Or you want to marvel at how thousands of people lived in a piece of Hong Kong that can fit into your nearby shopping mall? These questions, and more, can be answered with MapMartini!

But I'm not the first one who came up with this idea. I was a huge fan of MAPfrappe by Kelvin Thompson, until its indefinite closure in Summer 2019 due to increased costs to use the Google API. Unsure if MAPfrappe would ever reopen, I decided to make a similar site based on OpenStreetMaps. I am pleased to report that I was able to include the rotation of polygons which I understand was a much-requested feature on MAPfrappe.

I appreciate any feedback and bug reports!

Updates

Jan. 3, 2024 - added lat/lon mode, option to select different tilesets, added scale, updated to latest versions of Leaflet and Leaflet.GeometryUtil

Known issues

Something weird happens when you draw something across the International Date Line.
On Edge and Chrome, if the search box finds multiple matches, you have to use the keyboard (arrow keys) to select which location you want. It seems to work fine on Firefox.
Switching between lat/lon mode and polygons may introduce some bugs with zooming or moving the map. In that case, just refresh the site.

Acknowledgements

I would like to acknowledge the following projects that made MapMartini possible:

Kelvin Thompson's MAPfrappe, of course, which heavily influenced the design of this site
Leaflet, a JavaScript library for OpenStreetMaps
Makina Corpus's Leaflet.GeometryUtil plug-in, which was incredibly helpful and exactly what I needed to compute the target shapes accurately without me worrying about map projections and such. License
Per Liedman's Leaflet Control Geocoder, which let me easily add a search box to both of the maps. License The search box uses Nominatim which does not allow heavy usage, so please no bots.
Mapbox for the map tiles that the site loads. They give me 200k free tile requests per month before I have to start paying, so please be reasonable in your use of this site.

Any code from the above sources that are used in MapMartini are copyrighted by the respective individuals or entities.

E-mail skchow03 at gmail dot com

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