Next: NUZR
Up: Output Control.
Previous: IID
Contents
IPLT
This constant allows redefinition of the principal solution measure, which is
printed as the second (real) column in the screen output and in the fort.7
output-file :
- -
- If IPLT = 0 then the -norm is printed. Most demos use this setting.
For algebraic problems, the standard definition of -norm is used.
For differential equations, the -norm is defined as
Note that the interval of integration is , the standard interval
used by AUTO. For periodic solutions the independent variable is transformed
to range from 0 to 1, before the norm is computed. The AUTO-constants THL(*)
and THU(*) (see Section 10.5.5 and Section 10.5.6)
affect the definition of the -norm.
- -
- If 0 IPLT NDIM then the maximum of the IPLT'th solution component
is printed.
- -
- If NDIM IPLT 0 then the minimum of the IPLT'th solution component
is printed. (Demo fsh.)
- -
- If NDIM IPLT 2*NDIM then the integral
of the (IPLTNDIM)'th
solution component is printed. (Demos exp, lor.)
- -
- If 2*NDIM IPLT 3*NDIM
then the -norm of the (IPLTNDIM)'th
solution component is printed. (Demo frc.)
Note that for algebraic problems the maximum and the minimum are identical.
Also, for ODEs the maximum and the minimum of a solution component are generally
much less accurate than the -norm and component integrals.
Note also that the routine PVLS provides a second, more general way
of defining solution measures; see Section 10.7.10.
Next: NUZR
Up: Output Control.
Previous: IID
Contents
Gabriel Lord
2007-11-19