GRASS5.0: brief description of ASCII formats

• Sites

  #any comment, can be inserted anywhere
  name|mysoils.site
  desc|3D soils data for location A
  time|15 Jan 1999
  labels|east north elevation ID pH Corg color
  form||||#%%@
  333444.55|2543367.01|22.45|#1 %6.6 %20.123 @brown
  333445.05|2543377.21|32.46|#2 %5.6 %10.043 @gray
  

  for lat/long data

  labels|longitude latitude ID elevation
  75:33:55.34W|33:44:59.21N|#1 %225.2
  

  Notes:

  • sites data are stored in this ASCII format in GRASS database
  • comment and header lines are optional
  • elevation can be given as a 3rd dimension or an attribute
  • read more about how to define time in GRASS: GRASS datetime library
  • read more detailed description of sites format: GRASS 4.2 Site Record Format Specification

  ---

• 2D Raster

  north: 3980319.16466812
  south: 3978824.85093895
  east: 443960
  west: 442296
  rows: 747
  cols: 832
  10.30957 10.318124 10.201462 9.9399 9.566847.............
  

  Notes:

  • this format is produced by r.out.ascii and can be read by r.in.ascii, raster data are stored as binary in GRASS database
  • header is mandatory
  • first row starts at NW (upper left corner) and the raster is written west to east, north to south.

• 3D Raster

  Proj: 1
  Zone: 1
  North: 2.0000000000000
  South: 0.5000000000000
  East: 4.0000000000000
  West: 3.0000000000000
  Top: 6.0000000000000
  Bottom: 5.0000000000000
  nofRows: 30
  nofCols: 20
  nofDepths: 14
  e-w resol: 0.05
  n-s resol: 0.05
  t-b resol: 0.071428571
  TileDimensionX: 8
  TileDimensionY: 8
  TileDimensionZ: 8
  CellType: double
  useCompression: 1
  useRle: 1
  useLzw: 0
  Precision: -1
  nofHeaderBytes: 12
  useXdr: 1
  hasIndex: 1
  Units: none
  22.3 44.5 33.8
  

  Notes:

  • this format is produced by r3.out.ascii and can be read by r3.in.ascii, raster data are stored as binary in GRASS database
  • header is mandatory
  • first row starts at NW (upper left corner) and the raster is written west to east, north to south, bottom to top.

  ---

• Vector

  Example area data

  ORGANIZATION:
  DIGIT DATE:   Apr 24 2001
  DIGIT NAME:   nds_gem
  MAP NAME:     nds_gem
  MAP DATE:
  MAP SCALE:    500000
  OTHER INFO:   /home/neteler/grassdata5/langeoog/PERMANENT/dig_cats
  ZONE:         0
  WEST EDGE:    3326228.1
  EAST EDGE:    3690891.8
  SOUTH EDGE:   5670297.1
  NORTH EDGE:   5987928.8
  MAP THRESH:   381
  VERTI:
  A  1
   5819822.9 3343726.42
   5819801.5 3343947.43
   5820154.9 3344395.23
  A  2
   5819822.83 3343726.42
   5827223.34 3348523.95
   5827298.34 3348556.25
   5827351.35 3348584.35
  
  The associated dig_cats file needs following format:
  
         # 3 categories
  
         0.00 0.00 0.00 0.00
          1:Stade
          2:Cuxhaven
  

  Example line data

  ORGANIZATION: 
  DIGIT DATE:   
  DIGIT NAME:   
  MAP NAME:     from raster map lidar99.t800
  MAP DATE:     
  MAP SCALE:    0
  OTHER INFO:   
  ZONE:         18
  WEST EDGE:    442296
  EAST EDGE:    443960
  SOUTH EDGE:   3978824.85093895
  NORTH EDGE:   3980319.16466812
  MAP THRESH:   0
  VERTI:
  L  5
   3980318.16445813 442301.26497998
   3980318.08679477 442301      
   3980316.24075428 442299      
   3980316.16403814 442298.85299258
   3980315.46571843 442297      
  L  264
   3980318.16445813 442777.02040119
   3980317.26230805 442779      
   3980316.16403814 442780.1796963
  

  Notes:

  • this format is produced by v.out.ascii and can be read by v.in.ascii, vector data are stored as binary in GRASS database
  • header is mandatory