Search found 928 matches

by daan
Wed Apr 17, 2024 3:35 pm
Forum: Map projections
Topic: Gall–Peters or AuthaGraph. The end.
Replies: 18
Views: 176

Re: Gall–Peters or AuthaGraph. The end.

justlikeoldtimes wrote: Wed Apr 17, 2024 3:06 pm I just don't want it institutionalized one bit.
I agree. The truism that everything is political doesn’t justify making something maximally political.

All rubbish.

— daan
by daan
Wed Apr 17, 2024 9:26 am
Forum: Map projections
Topic: Gall–Peters or AuthaGraph. The end.
Replies: 18
Views: 176

Re: Gall–Peters or AuthaGraph. The end.

Update: The omnibus bill that landed on the governor’s desk was amended to allow other cylindrical equal-area projections “similar” to Gall–Peters, and not to require replacing older materials. This is the amended text: Sec. 90. (1) Except as provided in subsection (2) of this section, beginning in ...
by daan
Mon Apr 15, 2024 1:37 pm
Forum: Map projections
Topic: Gall–Peters or AuthaGraph. The end.
Replies: 18
Views: 176

Re: Gall–Peters or AuthaGraph. The end.

It significantly increases the chances that the proposal will get defeated by rival political interests before becoming law. The only thing between the bill and law is the governor’s signature. The legislature passed a massive sheaf of bills all at once, including this one, and tossed them at the g...
by daan
Sun Apr 14, 2024 5:17 pm
Forum: Map projections
Topic: Gall–Peters or AuthaGraph. The end.
Replies: 18
Views: 176

Re: Gall–Peters or AuthaGraph. The end.

Suggestion: if passed, schools should rebel against this legislation by adopting maps in oblique aspects of the Gall-Peters projection. :lol: I hadn't even thought about textbooks! I thought it was just wall maps... Yeah, if this bill applies to textbooks, it's going to be ridiculously hard to find...
by daan
Sun Apr 14, 2024 1:52 pm
Forum: Map projections
Topic: Gall–Peters or AuthaGraph. The end.
Replies: 18
Views: 176

Re: Gall–Peters or AuthaGraph. The end.

That's weird wording. First banning one projection, then requiring one of two others, which is redundant because if those are the only two projections allowed, all other projections are banned by default. You might be attributing more mental acumen to the author of the legislation than exists. My b...
by daan
Sun Apr 14, 2024 1:42 pm
Forum: Map projections
Topic: Gall–Peters or AuthaGraph. The end.
Replies: 18
Views: 176

Re: Gall–Peters or AuthaGraph. The end.

They should just adopt the Mollweide or Bromley's rescaling of it. Or even Hammer-Aitoff. Or maybe stay out of legislating such things at all. I’m not so opposed to prohibiting Mercator for world maps in a classroom setting, other than for comparative purposes, but requiring this or that projection...
by daan
Sat Apr 13, 2024 8:46 am
Forum: Map projections
Topic: Gall–Peters or AuthaGraph. The end.
Replies: 18
Views: 176

Gall–Peters or AuthaGraph. The end.

Nebraska (that’s a central U.S. state) has a legislative bill pending signature from the governor, a bill about map projections in education. This is the text (emphasis mine): [indent=100] LEGISLATIVE BILL 962 Introduced by Wayne, 13. Read first time January 04, 2024 Committee: Education A BILL FOR ...
by daan
Sat Mar 30, 2024 8:31 pm
Forum: Map projections
Topic: Tobler’s hyperelliptical projection
Replies: 61
Views: 15606

Re: Tobler’s hyperelliptical projection

justlikeoldtimes wrote: Sat Mar 30, 2024 2:30 pm how it looks in "hemispheres" (it's on the top left) it weirdly shrank.
Puzzling. I don’t have any problem on Windows 10. Does that happen at any scale and resolution?

Thanks.
— daan
by daan
Sat Mar 30, 2024 9:46 am
Forum: Map projections
Topic: Tobler’s hyperelliptical projection
Replies: 61
Views: 15606

Re: Tobler’s hyperelliptical projection

I've been experimenting with hyperellipticals in GeoCart, and I've skimmed this thread and Tobler's paper, and I'm wondering what exact parameters need to be entered for the "World within a hypocycloid". More specially, an astroid with a 2:1 aspect ratio. I tried the parameters in the pap...
by daan
Sat Mar 30, 2024 9:37 am
Forum: Map projections
Topic: Tobler’s hyperelliptical projection
Replies: 61
Views: 15606

Re: Tobler’s hyperelliptical projection

Also, is there a reason why hyperellipticals like Tobler's preferred parameters can't be interrupted in Geocart? I like interrupting projections into hemispheres just so I can better visually understand what's happening with the underlying geometry. My novice mind believes there shouldn't be a reas...