STAR*NET V6 - Circe

Chapter 5 Preparing Input Data
The “DV” Code: Distance and Vertical Measurements to Another Station
Formats 3D Data Only - Depending on the “Distance/Vertical Data Type” mode:
DV From-To Slope Distance Zenith [Std Errs] [HI/HT]
DV From-To Horiz Distance Elev Diff [Std Errs] [HI/HT]
This data type has been provided to enter distance and vertical observations. It is often
used to enter the extra distance and vertical information recorded when the surveyor
takes a backsight reading.
The distance and vertical data may be either a Slope Distance and Zenith Angle, or a
Horizontal Distance and Elevation Difference, depending on the “Distance/Vertical Data
Type” option setting in the Project Options. The “Distance/Vertical Data Type” mode
can also be changed anywhere in the data file by using the “.DELTA ON/OFF” inline
option. For more details see “Using Inline Options” later in this chapter.
Example 1: (Slope Distance and Zenith Angle)
DV 8-5 1102.42 93-44-52 5.25/5.10
The slope distance and zenith angle between “8” and “5” is 1102.42 and 93-44-52.
Default standard errors are assumed. An entry is made defining HI and HT values.
Example 2: (Horizontal Distance and Elevation Difference)
DV 27-28 554.7 -14.2 0.04 & 5.25/5.10
In this example, the “Distance/Vertical Data Type” option in the Project Options has
been set to “Horiz Dist/Elev Diff.” A horizontal distance and elevation difference
between “27” and “28” is 554.7 and -14.2. We have entered optional standard errors for
the observations as well as an HI/HT entry.
Note that you must either enter two standard errors for the two observations on a data
line, or none so that defaults are assumed. A single item will be read as an HI/HT, two
items as two standard errors, and three items as the two standard errors plus an HI/HT
entry. Any other combination will cause an error message.
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