​HCMP: HMP From and To Stations

This record specifies the names of the from and to (end points) of a line between adjusted points in a network. This line is specified to request that the "horizontal mid point" horizontal error ellipse is calculated.

This record has two possible formats, a long parameter name format, and a short parameter name format. If column 10 contains an asterisk (*) the long name format is expected, otherwise the short name format is expected.

An HMP error ellipse is calculated and listed for the mid point of each valid HCMP line input. Also see the HCLV record and PREL record.

The short parameter name format is as follows:

Columns 002-005: HCMP
Column 010: (blank)
Columns 011-022: Station name of from-station
Columns 024-035: Station name of to-station

The long parameter name format is as follows:

Columns 002-005: HCMP
Column 010: * (asterisk)
Columns 011-041: Station name of from-station
Columns 043-073: Station name of to-station