MAPTOL_RATE

Specifies when to stop iterating

Description:

The normalised mean change in pixel value (see parameter "maptol" ) con sometimes settle down to a constant value, and thus never drop to the target " maptol" value. This may be the case for instance, if every iteration adds a fixed error map onto the current astronomical signal (see parameter "epsin" ). Specifying a value for " maptol_rate" causes the iterative loop to be left if the normalised mean change seems to settle down to a fix value. The supplied value for " maptol_rate" should be a fraction in the range 0.0 to 1.0, and gives the minimum required fractional change in " normalised mean change" between iteration. If the actual value falls below this minimum value, the iterative loop is left. [ <undef >]
Type:
real

SMURF Usage

MAKEMAP, CALCQU