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Replace low-contrast images
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.
The images will be high resolution and antialiased, with 15° graticules for world projections, red, translucent equator, red tropics, and blue polar circles. The weight, color, and transparency of the graticule lines was chosen for legibility at the thumbnail size without overwhelming the full-sized image.
Why did you upload a cut off version for the Mercator projection? That one you posted on the discussion page is much better because it demonstrates the stretching. --
Chricho ∀ (
talk)
11:48, 17 August 2011 (UTC)reply
Hi, Chricho. Thanks for the comments. I don’t follow your question. The Mercator has to be cut off somewhere because the full map is infinite in extent. Which discussion page do you refer to?
Strebe (
talk)
00:27, 18 August 2011 (UTC)reply
I'm pretty sure Chricho is alluding to the
Talk:Mercator projection#Replace low-contrast images section. I agree with Chricho that the "square" image is a better illustration for the Mercator article than the "slightly more clipped" image, because it illustrates the stretching better. I understand that, mathematically, the Mercator projection is infinitely long north-south, so we have to clip it somewhere. I think Chrico is alluding to the following two images: --
DavidCary (
talk)
17:50, 4 December 2011 (UTC)reply
Ah. Got it. Thanks, and thanks for the comments. I’ll consider the taller image in the context of the Mercator article. It’s very uncommon for the Mercator to extend that far. Google Maps does it for its tiling system, but Google Maps was not developed as a display world map. Meanwhile printed maps never show it like that, so to do so would be “ahistorical” and not representative. I understand that the square representation makes the vertical stretching even more obvious, but the vertical stretching already seems obvious to me, and it’s not clear to me that making it more obvious is more important than showing the map in a way more representative of how it is normally used. I’d like more discussion about this if I am to make the change.
Strebe (
talk)
23:33, 4 December 2011 (UTC)reply
The
Mercator projection#Uses section implies that the "square Mercator" arrangement is pretty common for online maps.
Would it be possible to make two images for the Mercator article, one with a "square Mercator" projection and another one with a "typical printed map" arrangement? --
DavidCary (
talk)
06:04, 17 December 2011 (UTC)reply
I have uploaded an image. We should move this discussion over to the Mercator page, where it belongs. I’ll copy and paste from here.
Strebe (
talk)
08:07, 17 December 2011 (UTC)reply
The Aitoff projection is a modified azimuthal
map projection first proposed by David A. Aitoff in 1889. Based on the equatorial form of the
azimuthal equidistant projection, Aitoff halved longitudes from the central
meridian, projected by the azimuthal equidistant, and then stretched the result horizontally into a 2:1 ellipse.Map:
Strebe, using Geocart