[mkgmap-dev] Issues generating DEM

Thu Nov 2 23:03:39 GMT 2017

El 02/11/17 a las 18:01, Frank Stinner escribió:
> 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.
I have tried other maps and nearly reached 2 GB, so the limit seems to 
be the same as for 64-bit machines.
>
> 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?
I don't have mono installed on my Linux machine, but wine seems to 
suffice by now. I tried BuildDEMFile.exe in a win XP virtual machine, 
but it refuses to work with "BuildDEMFile.exe is not a valid win32 
application". Does it have any dependency I should install on the XP 
machine?
>
> 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