Format Trackfiles Gartrip (*.t):
Example- Data:
Header:
01 02 03 04 05 06 07 08 09 0a 0b 0c 0d 0e 0f Byte-Nr.
47 41 52 74 72 69 70 20 74 72 61 63 6B CB 00 Code
G A R t r i p t r a c k ? ? Meaning
10 11 12 13 14 15 16 17 18 19 1a 1b 1c 1d 1e 1f Byte-Nr.
0e 00 54 65 73 74 2D 20 54 72 61 63 6B 20 31 35 Code
Numchr T e s t - T r a c k 1 5 Meaning
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Trackpoint- Data:
20 21 22 23 24 25 26 27 28 29 2a 2b 2c 2d 2e 2f Byte-Nr.
54 00 80 BF 20 00 C4 9D 05 D7 2E 98 16 03 0D 00 Code
T |--Latt.--| |--Long.--| |---Time--| Md NumZ Meaning
30 31 32 33 34 35 36 37 38 39 3a 3b 3c 3d 3e 3f Byte-Nr.
50 69 73 74 65 3A 20 41 6C 6C 61 6C 69 6E D9 0D Code
P i s t e : A l l a l i n Height Meaning
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Format of the Header:
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13 Byte:
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Text "GARtrip track"
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2 Byte:
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CB 00 (meaning unknown, perhaps version information)
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2 Byte:
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number n of following characters for the description of the file
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n Byte:
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descripting text
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Format of the Track- data:
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1 Byte:
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"T" begin of trackpoint data
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4 Byte:
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latitude, first byte is LSB, information in minutes multiplied
with 308B9(Hex) (to get the minutes you have to divide the value
by 198841(dez)
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4 Byte:
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Longitude, same format as latitude
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4 Byte:
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Time, first byte is LSB, counts the seconds since 31.12.1989, 00:00:00
for GMT
eg. For VB:
tim = value / 24 / 3600
+ 32873 + 1 / 24
datum$ = FormatDateTime(tim, vbShortDate)
ClkTime$ = FormatDateTime(tim, vbLongTime)
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1 Byte:
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Mode: if lowest bit (Bit0) is set (‘1’): start of new
segment
Bit 1-3: color of track
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02
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automatic color
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04
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black
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06
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green
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08
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blue
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0A
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red
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0C
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cyan
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0E
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magenta
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2 Byte:
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number m of following textcharacters
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m Byte:
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text
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2 Byte:
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Height in meter, first byte is LSB: eg: 0DD9(Hex) = 3545 m
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