updated: 18-Jun-2009
Copan for Windows
Point Records
A coordfile contains a head record and a set of survey point records.
A point record contains plane survey coordinates and a number of other fields.
Point Record Fields
Some coordfile point attributes are numeric, some textual, some editable and some read-only:
- A point Number must be any positive integer, up to nine digits, and be unique within a coordfile.
- A point may be Locked in which case it is protected from being deleted or edited by another module.
- An optional point Name can be any string of up to 15 printable characters,
to help identify that specific point, such as how it is known by an outside organization.
- Point Northings and Eastings can be any real or integer numbers.
- An optional point Elevation can be any real or integer number.
- An optional point Code can be any (usually numeric) string of up to 13
printable characters, but please see § Point Codes concerning its intended use.
- A read-only code Desc, intended as a brief (up to 13 characters) explanation of the code.
- A read-only code Description, which is just a longer (up to 31 characters) version of the code Desc.
- A read-only code Extension, intended as an explanation (up to 17 characters) of the extended portion of the code, if it exists.
- An optional point Note can be any string of up to 17 printable characters to help describe that specific point, such as a statement about a feature's condition or construction or a reminder to check the field book.
- The point Source and Modified are read-only fields and indicate which module or program first created the point and which one last modified it.
(See below for details on these 6-character code names.)
To Add, Delete, or Edit a Point Record
- CoordFile | Edit Point...
- Enter the Point number — which must be a positive integer — or navigate to it via Prev., Next, etc.
- Enter or edit the point's details.
- Point Names and Notes are not processed by Copan, other than being input, filtered, or output.
- To use the Code-dependent Desc or Extension fields, check the Show Desc & Extension box and ensure that a valid Codes Table path (see § Point Codes) is provided in the so-named box.
- There are two alternatives to entering a numeric code, when the Show Desc & Extension box is checked:
- pick its Desc from the drop-down Desc list
- enter its Desc in the Code box
(See above for further discussion.)
- Add, Delete, or Update the point as appropriate.
To Renumber a Point Record
- CoordFile | Edit Point...
- Enter the Point or navigate to it via Prev., Next, etc.
- Renum... the point as appropriate, optionally recording the old number in the Name or Note.
Src/Mod Code Names
Various Copan modules and other programs are recorded, via a code name, as being the source or last modifier of a point:
| Src/Mod |
Module or Program |
|---|
bulk | Bulk Edit
|
cogo | COGO
|
edit | Edit Point
|
field | Field Data
|
form | Transformation
|
import | Import Ascii
|
loop | Map Traverse
|
palm | Palm Copan
|
pocket | PocketPC Copan
|
hp42 | HP42 emulator
|
updated: 18-Jun-2009