...NAME CHEBGRID AUTHOR Craig B Markwardt NASA GSFC Code 662 Greenbelt MD 20770 craigm lheamail gsfc nasa gov UPDATED VERSIONs can be found on my WEB PAGE http cow physics wisc edu craigm idl idl html PURPOSE Estimate Chebyshev polynomial coefficients of a function on a grid MAJOR TOPICS Curve...
.txthttp://cow.physics.wisc.edu/~craigm/idl/down/chebgrid.txt
...NAME CHEBGRID AUTHOR Craig B Markwardt NASA GSFC Code 662 Greenbelt MD 20770 craigm lheamail gsfc nasa gov UPDATED VERSIONs can be found on my WEB PAGE http cow physics wisc edu craigm idl idl html PURPOSE Estimate Chebyshev polynomial coefficients of a function on a grid MAJOR TOPICS Curve...
.txthttp://www.physics.wisc.edu/~craigm/idl/down/chebgrid.txt
... tabulated or potentially noisy data the routines CHEBGRID or CHEBFIT should be used instead The function to be approximated may either be the name of an IDL function the default behavior or an IDL expression using the EXPRESSION keyword The procedure uses a modified form of the classic algorithm...
.txthttp://cow.physics.wisc.edu/~craigm/idl/down/chebcoef.txt
... is the number of x y pairs For functions which can be evaluated to full machine precision at arbitrary abcissae the routine CHEBCOEF should be used instead For exact data tabulated on a regular grid the routine CHEBGRID should be tried The user can also specify that the function is even or odd using...
.txthttp://cow.physics.wisc.edu/~craigm/idl/down/chebfit.txt
... of solar system bodies not already present in the JPL planetary ephemeris This routine only creates new ephemerides in memory No facility is provided to write to disk The user must have already estimated the Chebyshev polynomial coefficients for the body of interest One way to do this is with CHEBGRID from...
.txthttp://cow.physics.wisc.edu/~craigm/idl/down/jplephmake.txt
... and Surface Fitting Special Functions CALLING SEQUENCE b LEGCHEB a DESCRIPTION This routine computes the coefficients of a Legendre polynomial expansion when the Chebyshev expansion is known Users can determine the Chebyshev expansion coefficients using a routine like CHEBFIT CHEBCOEF or CHEBGRID Then if...
.txthttp://cow.physics.wisc.edu/~craigm/idl/down/legcheb.txt
... tabulated or potentially noisy data the routines CHEBGRID or CHEBFIT should be used instead The function to be approximated may either be the name of an IDL function the default behavior or an IDL expression using the EXPRESSION keyword The procedure uses a modified form of the classic algorithm...
.txthttp://www.physics.wisc.edu/~craigm/idl/down/chebcoef.txt
... is the number of x y pairs For functions which can be evaluated to full machine precision at arbitrary abcissae the routine CHEBCOEF should be used instead For exact data tabulated on a regular grid the routine CHEBGRID should be tried The user can also specify that the function is even or odd using...
.txthttp://www.physics.wisc.edu/~craigm/idl/down/chebfit.txt
... of solar system bodies not already present in the JPL planetary ephemeris This routine only creates new ephemerides in memory No facility is provided to write to disk The user must have already estimated the Chebyshev polynomial coefficients for the body of interest One way to do this is with CHEBGRID from...
.txthttp://www.physics.wisc.edu/~craigm/idl/down/jplephmake.txt
... and Surface Fitting Special Functions CALLING SEQUENCE b LEGCHEB a DESCRIPTION This routine computes the coefficients of a Legendre polynomial expansion when the Chebyshev expansion is known Users can determine the Chebyshev expansion coefficients using a routine like CHEBFIT CHEBCOEF or CHEBGRID Then if...
.txthttp://www.physics.wisc.edu/~craigm/idl/down/legcheb.txt
