[mkgmap-dev] Issues generating DEM

Thu Nov 2 17:01:13 GMT 2017

Sorry, there is a intern limitation of .NET. The maximal size of a 
"object" on a 64-bit-machine/windows is near by 2 GByte. That means in 
this case, we can have maximal about 532.000.000 height values. 31503 x 
25646 = 807.925.938 is too much. You have to split the area in 2 tiles. 
This all is only valid, if your machine have enough memory. I'm not 
shure, but i believe on a 32-bit-machine/windows is the object-size only 
1 GByte.

By the way, a .NET-program should be run with linux/mono. I cannot test 
that, but a command-line program should be easy enough. Can you try  that?

At second, i have used your TRE file with this output:

BuildDEMFile, Version vom 30.10.2017, Copyright © FSofT 2017
Daten aus der TRE-Datei '55113002.TRE' gelesen
Höhen für -8° .. -7° / 37° .. 38° eingelesen
....
Höhen für -5° .. -4° / 40° .. 41° eingelesen
1 Zoomlevel
erzeuge 10560 x 9339 interpolierte Höhenwerte für den Abstand 
0,00027761° x 0,00027761°...
Daten 10560 x 9339, Min. 70, Max. 2531 für Zoomlevel 0
Kachelanzahl 165 x 146 (rechte Spalte 64 breit, untere Zeile 59 hoch)
Rand links -7,56333589553833°, oben 40,498673915863°
Pixelgröße 0,00027761° x 0,00027761°
....
24090 Kacheln encodiert

It is mysterious.

Frank

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