4.7 Table obs

Table obs contains simple observations like direction or distance.

• conf_id is id of configuration which cluster belongs to.
• ccluster is id of cluster which observation belongs to.
• indx identifies observation within cluster. It has to be positive integer.
• tag specifies a type of an observation. Allowed tags follows.
  • direction for directions.
  • distance for horizontal distances.
  • angle for angles.
  • s-distance for slope distances (space distances).
  • z-angle for zenith angles.
  • azimuth for azimuth angles.
  • dh for leveling height differences.
• from_id is stand point identification. It is mandatory and it must not differ within one cluster for observations with tag = 'direction' .
• to_id is target identification (mandatory).
• to_id2 is second target identification. It is valid and mandatory only for angles (tag = 'angle').
• val is observation value. It is mandatory for all observation types.
• stdev is value of standard deviation. It is used when variance in covariance matrix is not specified.
• from_dh is value of instrument height (optional).
• to_dh is value of reflector/target height (optional).
• to_dh2 is value of second reflector/target height (optional). It is valid only for angles.
• dist is distance of leveling section. It is valid only for height-differences (tag = 'dh').
• rejected specifies whether observation is rejected (passive) or not. Value 0 stand for not rejected, value 1 for rejected. It is mandatory. Default value is 0.

Example (table contents without empty columns):

conf_id|ccluster|indx|tag      |from_id|to_id|val           |rejected
---------------------------------------------------------------------
1      |1       |1   |direction|201    |202  |0.0           |0
1      |1       |2   |direction|201    |207  |0.817750284544|0
1      |1       |3   |direction|201    |205  |2.020073921388|0

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