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Maps / Universal world map
« on: January 17, 2018, 00:13:48 »@Michael: thanks - are your latest versions available elsewhere?
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Hello John and all interested parties,
once the new release is complete, it will be hosted on Christian's site, like the old overview maps.
But here is a link to the ZL 8 map, which is mostly stable (only some rogue elevations in OSM in Alaska and the Philippines (in feet, without notice) keep changing the most isolated peaks there, while I correct the elevations round by round based on Max' SRTM-OSM comparison):
https://www.dropbox.com/s/04uma6jr2l1t2kb/W1-8-MBt.mbtiles?dl=0
And below is the draft of the text for the overview page (google translate, not yet redacted).
Enjoy and I'm interested in your feedback.
Cheers
Michael
January 2018:
Overview maps with more information
What is common in comparison to the 2016 edition: different zoom levels are different
Data sources used, and the file size remained in the same order of magnitude.
And also the basic format: these maps are NOT vector maps because they react too slow in low zoom levels, conventional bitmap maps
Here are much faster - the undisputed domain of vector maps is now the detailed resolution higher
zoom-levels. However, now only one format, MBTiles, is offered, which can be displayed equally by the essential apps.
As is usual with all cards here, there is a button for the quick installation directly on the smartphone for Locus and Oruxmaps.
What has changed? The more or less random presentation of OSM data (e.g., locations) in the rendering and map generation tools
is simply a nuisance. Therefore, I have explicitly included the selection and control of the objects to be displayed and highlighted in the generation process of the overview maps.
But for a better end result, this presupposes a (mostly manual) editing of the OSM raw material.
So far, the following information has been prepared:
- The main places of countries, provinces and sub-states of many countries are highlighted in 3 different colors, in English and the national language (if that name is significantly different.
- The display size of city names increases in steps with the number of inhabitants (if specified in OSM, hopefully correct, otherwise an assumption is made by location category (city, town, village)). These location size categories are now also included as a "PopCat" tag in Christians OAM maps and can be used by theme for interactive selection. An adapted Elevate theme is on my list for 2018 - maybe Tobias is faster too: -)
- Islands or groups of islands, especially the remote ones, are often hard to find, and there is also a remedy here.
- Inspired by a discussion on the appearance or visibility of mountain peaks operated by Christian and Tobias, and with helpful data tables from Max, I have highlighted some 100 important mountain peaks
- The deepest sea trenches have also been around for a few days.
The idea behind all this is to have selected information available at a glance, OFFLINE. A supplement to Wikipedia, so to speak, which also exists offline: Kiwix and Aard2, both of which I highly recommend.
In the case of settlements, information maximization here means: it is not simply selected by size, but a certain amount of settlement names is packed into a surface. For Alaska or Siberia then show up with less than 100 inhabitants - and they are important because they are the only ones - while in Japan at the same zoom level some 50,000-inhabitant city finds no place. In general, overlaps are NOT avoided, but names of places of larger category always cover smaller places. If it gets tight, this too is an indication, and 1 or 2 zoom levels further, the names of the places are completely legible.