Contents Index

Field Obs Session Reduction

Session

This is the name of the field session, usually a date, or 'day1' etc.
This can be changed in the 'Session Settings' optionion below.

Session Settings

Click to edit the Session name or points range etc.
To the right of this button will be shown the current point number range for the session.
Click here for more information.



Code Library

Enter the name of the XML or MST Code Library file
This file defines the point codes to be used to auto create strings and assign symbols to points
Click here for more information.

Check Codes

Tick to check every point code is a legal code in the Code Library File
This is used to detect point coding errors and to enforce coding standards.

Form Strings

If this options is selected, the program will form strings joining points with the same codes.
It will use the Code Library to place the strings on certain layers.
It will also do Point Symbolisation - assign symbols to points based on their code using the rules defined in the Code Library.
Note: It will also do Point Code Translation BEFORE Forming strings or point symbolisation

Listing

Enter a listing filename if one is required.

Tip - Automatic Layer Creation

The Code Library string/point formation will automatically create the layer if the
layer does not exist and will give the layer the string/point attributes (colour,
line style, thickness, symbol, symbol size etc) as defined in the Code Library file.

If a coded string/point attributes are the same as the layer attributes,
the string/point attributes are set to 'BYLAYER' so that when the layer attributes are changed later,
the string/points on that layer will use the new layer attributes.

Field Obs Reduction Rules

The 'Obs Stn' field is near the bottom of each observation.
The Average Obs tick box is in the Session Settings.
  1. If the 'Obs Stn' field is present it is used to identify the target station.
    The reduction is done but the results are just compared to the existing co-ords and the differences are displayed.
    See the Obs to Point 102 below.
  2. If the 'Obs Stn' field is blank
    A. If the Point does not exist - the Point is Created.
    B. If the Point exists, and Average_Obs not ticked, - the Point will be Overwritten See Obs to Point 506 below
    C. If the Point exists, and Average_Obs is ticked, - the Point will be Averaged
    See Obs to Point 8103 below

Obs Point Averaging

You can enable point averaging for muiple observations to the same point.
Tick "Avg Obs" in the Session Properties
When ticked, during reduction it will average the reduced co-ords with the existing pt co-ords.
If the diffs are outside Session tolerances, it will not average them and will show the Differences.
If not ticked, ab obs to a point will overwrite the existing co-ords. Last obs wins.

Azimuth Swing

Click here for more information.
Mimaka Pty Limited            Field Obs Reduction                         Page:1
GeoSurvey V7.81                   Survey4.acs                        23-Mar-2020

================================================================================
PT       DIST  HT-TGT  VERT-ANG    HOR-ANG      EASTING    NORTHING   HEIGHT COD
================================================================================

Session Scale factor = 1.00000000
102                                            1813.411    5000.000    8.657 Cd='PLUG'
506                                            1836.784    5001.342   13.287 Cd='RT-SR1 E'
3000                                           1001.769    1015.775    8.003
3001                                            941.519    1005.417   11.004 Cd='CB'
3011                                            992.001     951.964    8.829
3012                                           1006.471     948.726    8.432 Cd='NAIL'
3013                                           1006.470     948.726    8.432
3021                                           1005.884     939.472    7.223 Cd='GIP'
3035                                           1020.827    1011.785    7.310
3037                                           1001.768    1015.776    7.986

106     Setup Stn 106           HtIns=1.185    1879.414    5000.000    8.142 Az Swing 35959'58"
102     66.006  0.000  9034'54" 27000'00"    1813.412    4999.999    8.657 Cd='PLUG' Obs=102
                                      Diffs      -0.001       0.001    0.000  Check obs to 102
...
506     42.835  0.000  8441'44" 27148'15"    1836.784    5001.343   13.287 Cd='RT-SR1 E'
506     Point Overwritten        Diffs            0.000       0.000   -0.000
...
3000    Setup Stn 3000          HtIns=1.000    1001.769    1015.775    8.003 Az Swing   000'01"
8103    61.206  1.000  8711'14" 26014'43"     941.521    1005.418   11.006 Cd='CB' Obs=8103 Rm='F1'
8103    61.206  1.000  8711'14" 26014'44"     941.521    1005.418   11.006 Cd='CB' Rm='F1'
8103    Point Averaged                          941.521    1005.418   11.006
3002    13.064  1.000  9455'21" 18436'00"    1000.725    1002.801    6.882 Cd='DH' Rm='F1'
3002    13.066  1.000 26504'13"   437'30"    1000.719    1002.800    6.880 Cd='DH' Rm='F2'
3002    Point Averaged                         1000.722    1002.800    6.881
8103    61.206  1.000 27248'32"  8014'38"     941.521    1005.416   11.002 Cd='CB' Rm='F2'
8103    Point Averaged                          941.521    1005.417   11.004
3002    13.064  1.000  9455'14" 18436'34"    1000.723    1002.801    6.882 Cd='DH' Rm='F1'
3002    Point Averaged                         1000.723    1002.801    6.881