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--- arma3:terrain:satellite-texture-terra-incognita [2019-01-14 02:27]
snakeman added info about lost connection.
+++ arma3:terrain:satellite-texture-terra-incognita [2019-02-11 03:01]
snakeman added kmz black rectangle hiding.
@@ Line 130: / Line 130: @@
 If you hit retry you'll get new dialog of some generic C# (I think) error of "System.IO.IOException: <same error as above>" + few other function exception errors. There is OK button and clicking that allows you to resume the download.
+====== Downloading HUGE Satellites ======
+For those monster sized terrains when you download satellite imagery larger than 50,000 x 50,000 pixel resolution it is very much recommended you split the downloads to four (or more) smaller areas.
+On january 2019 I downloaded 409km x 409km sized chunk of mongolia arcgis 16 level and it took me **10 days!** yes, ten days of continuous download. This was because after the first couple of days the download speed of those cache-tiles slows down from the beginning several tiles per second to maybe even as slow as one tile in 3-4 seconds. This will drag the download time to incredibly long.
+I already seen this back in 2017 when downloading 200+ satellites to PMC real world data terrains and now with the mentioned mongolia I've had enough. Now all our downloads above 40km x 40km terrains will be split to four smaller areas.
+There are no slowdown on 40km area downloads that I can notice, so lets say you download 81km terrain then simply split terra incognita downloads to four. See below KMZ Rectangle for practical example.
+====== KMZ Rectangle ======
+**Howto get terrain area from global mapper into terra incognita.**
+Global mapper export KMZ/KML file from your user created feature grid.
+Terra incognita select file -> load waypoints, tracks, routes, then browse to your new KMZ file. Now black rectangle appears in the coordinates.
+Example: for 81km 1m/px KMZ rectangles select arcgis zoom level 11 and make terra incognita fullscreen, now you have very clear view of the KMZ black rectangle (maybe you need to use openstreetmap source for brighter background depending on the terrain type). Now draw your normal rectangle selection over this black rectangle area.
+If you are downloading in split to four smaller selections, then simply select rectangle of about 43km x 43km in size, place it on north west corner and copy coordinates to clipboard and save them. Then move rectangle to north east corner, copy coordinates to clipboard and save them... repeat this to south west/east corners as well. Now you have four sets of coordinates to 43km x 43km regions which are very quick to download.
+Use waypoints,tracks -> visible to hide/disable the KMZ black waypoints rectangle. Start your download normally (black KMZ rectangle will NOT be saved to the satellite imagery).

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