TPC Desktop Introduction 23
Working with Points
TPC uses the term
coordinate
points
or just
points
to refer to a location defined by a point label,
northing, easting, elevation and description. The
points
may be used in a
traverse
but do not have
to be.
Point Rules
TPC has a few rules about points that you must follow:
Point labels can contain numbers, letters, and symbols in any combination.
Each point label in the survey must be unique. TPC identifies each point by its point
label, so there can be only one point 200, only one point 201, etc.
TPC creates new unique point labels from existing point labels by adding a colon and a
unique number to the new point. If TPC duplicates point A1, it tries to name it A1:1. If
the survey already has a point labeled A1:1, TPC tries to name it A1:2, etc. In this way,
the point label is unique, but you know that it is related in some way to point A1. You
may edit any point label at any time.
Point Descriptions
Each point in the survey can have its own point description. These are the field notes you might
otherwise enter on the right-hand side of
your field book.
Descriptions can be alpha or numeric
characters.
The field notes are saved with the
coordinates of each point when you save
a survey file.
The Description field is also where Point
Codes are entered for each point.
Points manager
The Points manager manages all of the
points in the survey. It lists the points in
the survey, sorted numerically and
alphabetically. You can also sort by
Northing, Easting, Elevation, or
Description or combine them for multi-
level sorts.
Use the Points manager to select certain
points for printing or exporting. Use the
search and replace tools to update point
descriptions, enter corrected elevations,
re-label points and lots more.
