[bigans]

Thank you guys, but the miracle happens the same!
As Kevinp said in this topic I use Microdem to crop the map at 200 pixels instead of 50. So even if the area is big I use gimp to scale up the image, so I obtain the real mymap_c at 17216*9536 pixels!!!

Hi Kevinp, I need another help.

Unfortunately, I lost the precision of the coastline in this huge map.



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Check the real coastline



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Could it be derived from the fact that I cut the map to 200 pixels instead of 50, or because I applied the gaussian blur?