If the y-axis error data are available and the
WEIGHT parameter is TRUE, this application will perform a weighted least squares fit to a straight
line for the data over the range delimited by the XMIN and XMAX parameters. If the y-axis error data
are not available or WEIGHT is FALSE, an unweighted fit is performed. The best fit straight line is
plotted. The resultant fit parameters are displayed along with some simple statistics for the data (these
statistics are also weighted in the case of a weighted fit).
COLOUR = _INTEGER (Read and Write)
The colour index used when plotting the fitted
line.
If the value is not specified on the command line, the current value is used. If there is no current value,
a default value of 2 (i.e. red) is used.
WEIGHT =_LOGICAL (Read and Write)
Whether the fit is to
use the y-axis error data in the
EYCOL data area, if available. If no error data are available, the fit will
always be unweighted.
If the value is not specified on the command line, the current value is used. If there is no current value,
a default value of TRUE is used.
XMIN = _REAL (Read)
The minimum X value to be used in the
fit.
The value of the global parameter PONGO_XMIN is used. If PONGO_XMIN is not defined, the
default value 0.0 is used.
XMAX = _REAL (Read)
The maximum X value to be used in the
fit.
The value of the global parameter PONGO_XMAX is used. If PONGO_XMAX is not defined, the
default value 1.0 is used.