posgrid

NAME

SYNOPSIS

DESCRIPTION

In some software the on position value is not correct due to insufficient digits for the value. To solve/avoid the problem this command is useful.

The profile data itself are not changed. The command is not for actual data of different position using such as interpolation.

The command does not consider how far the grid point is from the nomical position. The command gives the nearest grid point in both longutude and latitude.

The command change the on position value only for the assigned coordinate system. If you want to change both, you sholud also use poscorr.

FILTER TYPE

OPTIONS

-coordinates lb | radec | azel

-coord_sys lb | radec | azel

coordinate system for the grid. "lb" is for Galactic coordinates, "radec" is for equitorial coordinates (B1950.0), and "azel" is for ground base coordinates.

-grid angle_value

The regular grid interval in angle_value. If the grid is not square, you should give both values along longitude and latitude separated by ","

-origin angle_value

The origin of the regular grid in angle_value. You should give both values along longitude and latitude separated by ","

-msg_file filename

Save a process message besize of the history part of scn. The message shows scn_name, position differences along the coordinate axes and the linear distance due to the process in arcsec unit.

The filename "no" or the blank filename means no output. The filename "-" means the UNIX standard error message (usually on screen).

DEFAULTS

-coordinates lb -origin 0,0 -grid HPBW_in_each_header -msg_file no

SEE ALSO

BUGS

• If the data is not actually on the regular grid, the command change its header without any warning.

HISTORY

ver.3.00

2003/2/1 T.Handa

MANUAL VERSION