forum.freeciv.org

Download links are at the bottom of the last post! :D (I just added them 3 minutes ago.) Thanks, let me see this. "GLOBCOVER_L4_200901_200912_V2.3_21600w.pbm.7z" is pbm (portable bit map) with binary/hex values, pbm file compressed externally with 7z. Uncompressed size is 200 MB, compress...

I don't need a small map for testing, i need a big map.

In the GlobCover2009 data set which I downloaded last evening, the tiff is used to store grayscale values which indicate the land cover classification of each pixel. Tiff files inside are too big to be of any use to me. Can't view them, but i could hex-edit if not compressed. I think that they are ...

I've been able to find ocean depth map - i think - here : https://visibleearth.nasa.gov/images/73963/bathymetry/73965l The 21600x10800 png is big but it's 8 bit per pixel (grayscale) so pixel merging can happen as much as it wants, no big deal. For once i've found something that's usable ! I might e...

Ok, let's have a look at what we have here. The text file looks closer to home. Things i've seen : - fciv has two ocean types ; here not differenciated (can be provided later if relevant data is found) - there are forests where it shouldn't : UK, France, Spain, are 100% covered with forests - no hil...

Depends on the individual image, some actually are - few colors in the key makes it quite obvious which pixels were supposed to match which color in the key. Some of them are close enough, of course. But i wasn't speaking about these. The alternative is not using the generated image files and inste...

When constraining the colors, it doesn't matter how many incorrect shades of blue for example, are in an image wherein the key defines only one blue color as valid. The constraining process makes all the blue variations as near-matches the same, which is the point. You start with one "correct&...

Obviously the pixel itself was already wrong, but that does not make it right at the end of the process -- and, worse, we lose the information that it was wrong to start with. I took such an image, reduced it to 256 colors, and did color usage statistics. You'd expect that "main" colors ar...

We are not using an elevation map in civ, we have all sorts of infos. Any kind of cell can be next to any other. So, to take an example like yours, if we have water as blue and desert as yellow (a likely story), a pixel between them is some shade of green. When reducing the colors, it should end up ...

Only the colors listed in the color key are valid data. Aside from text labels and grid lines, other colors in the image are unintentional "shades" or blends of the key's colors. Those shades and blends are not intentional as data, but rather are introduced by the graphics file format use...