Talk:Two-point equidistant projection

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Can anyone expand on this article?—Preceding unsigned comment added by [[User:{{{1}}}|{{{1}}}]] ([[User talk:{{{1}}}|talk]] • [[Special:Contributions/{{{1}}}|contribs]])

Hans Maurer?[edit]

It links to sports man, was he a mathematician as well?—Preceding unsigned comment added by [[User:{{{1}}}|{{{1}}}]] ([[User talk:{{{1}}}|talk]] • [[Special:Contributions/{{{1}}}|contribs]])

We find a mathematician "Hans Maurer" mentioned as introducing a pre-superscript notation for tetration in 1901, analogous to the post-superscript notation for exponentiation. Possibly he was also the cartographer who introduced this projection 18 years later. Next step would be to consult German Wikipedia and biographical history books. I don't have time right now to do so. How notable or significant was his career? yoyo (talk) 04:38, 4 February 2022 (UTC)[reply]

Replace low-contrast images[edit]

I will be replacing images on the various map projection pages. Presently many are on a satellite composite image from NASA that, while realistic, poorly demonstrates the projections because of dark color and low contrast. I have created a stylization of the same data with much brighter water areas and a light graticule to contrast. See the thumbnail of the example from another article. Some images on some pages are acceptable but differ stylistically from most articles; I will replace these also.

The images will be high resolution and antialiased, with 15° graticules for world projections, red, translucent equator, red tropics, and blue polar circles.

Please discuss agreement or objections over here (not this page). I intend to start these replacements on 13 August. Thank you. Strebe (talk) 22:48, 6 August 2011 (UTC)[reply]

Advantages and Disadvantages[edit]

What are the advantages and disadvantages of this projection, and what kind of distortions result from using it? — Preceding unsigned comment added by 98.28.166.53 (talk) 21:30, 29 January 2012 (UTC)[reply]

Similar disadvantages and distortions as azimuthal equidistant projection, though the bands of constant distortion are oval instead of circular. The only advantage is that you can measure distances accurately from two fixed points to any other points on the globe. Strebe (talk) 07:56, 30 January 2012 (UTC)[reply]

File:Two-point equidistant projection SW.jpg to appear as POTD[edit]

Hello! This is a note to let the editors of this article know that File:Two-point equidistant projection SW.jpg will be appearing as picture of the day on August 30, 2014. You can view and edit the POTD blurb at Template:POTD/2014-08-30. If this article needs any attention or maintenance, it would be preferable if that could be done before its appearance on the Main Page. Thanks! — Crisco 1492 (talk) 00:48, 10 August 2014 (UTC)[reply]

Done. Thanks again, Crisco 1492. Strebe (talk) 07:35, 12 August 2014 (UTC)[reply]

Thank you right kindly. — Crisco 1492 (talk) 08:17, 12 August 2014 (UTC)[reply]

Picture of the day

A two-point equidistant projection of Eurasia. All distances of other points from the two points marked in red (45°N 40°E and 30°N 110°E) are correct. This map is a derivative of NASA's Blue Marble summer month composite, with oceans lightened to enhance legibility and contrast.Map: Strebe, using the Geocart map projection software

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