Search found 138 matches

by meynaf
Tue Oct 26, 2021 4:36 pm
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

I've used the "inaccessible" tile in scenarios, but none are Earth / whole-planet. It's the cave walls in " The Hunted ". Originally the caves were a labyrinth but I had to dumb-it-down repeatedly or the "A.I." players would wander around in the maze for awhile and man...
by meynaf
Tue Oct 26, 2021 8:22 am
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

The 14th tile type is the "inaccessible" tile which might have some value for features such as "bottomless" pits on land, or the inside of an active volcano, or the vertical edges of a canyon or tall cliff, or any rock feature which wouldn't be scalable by standard Freeciv units...
by meynaf
Mon Oct 25, 2021 7:15 pm
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

At 21,600 * 10,800 pixels, your image has 233 million pixels. If your final map size target is 1,000x1,000 tiles , that is 1,000,000 tiles total. In which case, it might be better to develop an algorithm to convert each high-definition 233 pixel area of the image to 1 tile , rather than to convert ...
by meynaf
Mon Oct 25, 2021 8:23 am
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

Ok i will keep that for later. But first things first. I need trustable data with high enough resolution. For now i only have 1x 23-values + 3x 256-level data, in need of a conversion algorithm to make single 13-values data, this for a 21600x10800 area which probably needs a better downscaling metho...
by meynaf
Sat Oct 23, 2021 6:26 pm
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

^ That's as close as I can get to not having land on the sides... And it looks like it is missing a little bit of Alaska and Russia at the curves. If something's missing, i can't use it. :( I added a link at the bottom of my last post to more projection images of your map. More and more thoughts ab...
by meynaf
Sat Oct 23, 2021 5:41 pm
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

^ Regarding the consistency of data sets, or lack thereof... I only picked GlobCover 2009 because it was the smallest file size of the GlobCover data sets. If the methodology is the same between satellite photo based data sets, then I would expect them to improve over time, yet the more recent 2015...
by meynaf
Sat Oct 23, 2021 4:23 pm
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

I had assumed , because the "Land Cover of Africa" image and GuulagMaps both have it wrong, that the error was in the GlobCover 2009 land cover data but I get your point -- it isn't. Which strikes me as odd because the more recent 2015 Africa land cover data used for that image does have ...
by meynaf
Sat Oct 23, 2021 8:38 am
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

^ I don't think that's right. It is the land cover data (GlobCover 2009) that has it wrong - it should not have been classed as anything but desert. What's not correct ? The land cover data i'm using gives desert there, really. The bathymetric data is correct despite that it doesn't translate into ...
by meynaf
Fri Oct 22, 2021 5:26 pm
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

^ Yeah, but so far none of the continents are missing! :) Best method might be to first simplify the land cover classes to a minimal set that translates well to Freeciv. Too much ambiguity among the classes, coupled with the increasing degree of uncertainty, is maddening. None of the continents mis...
by meynaf
Fri Oct 22, 2021 6:04 am
Forum: Gameplay
Topic: maps with different projection ?
Replies: 77
Views: 3206

Re: maps with different projection ?

Sure, but there are potentially much larger errors than this one.