SPLINE(1) GNU Plotting Utilities SPLINE(1) (NAME) spline - (SYNOPSIS) spline [ ] [ ] (DESCRIPTION) spline ( <<>>) . . -a -A ( ) . t y . t y . y -d ( ). t . . ASCII () . t y (white space) . () <<#>> . . . . -- . - . . (OPTIONS) (Interpolation-Related Options) -f --filter ( ) spline (real-time) . . -f -t . -f -k -p -T . -f () . -k k --boundary-condition k k. ( 1.0 .) y"[0]=ky"[1] y"[n]=ky"[n-1] . y[0] y[1] y y[n-1] y[n] . k <<>> (natural) . -f -p -k . -n n --number-of-intervals n n . n+1 . n 100 . -p --periodic (). y . -p -f -k . -T tension --tension tension . ( 0.0 ). tension () . <<>> . y""=sgn(tension)*(tension^2)y" . tension . -f -T . -t tmin tmax [tspacing] --t-spacing tmin tmax [tspacing] tmin tmax . tspacing -n . -t . -f -t ( )..SS " (Format-Related Options)" -d dimension --y-dimension dimension y dimension . 1 . -I data-format --input-format data-format () data-format : a ASCII (). t y . y d d+1 . t y . ( ) . f (Single precision). t y . y d d+1 . FLT_MAX . 3.4x10^38 . d (Double precision). t y . y d d+1 . DBL_MAX . 1.8x10^308 . i (Integer). t y . y d d+1 . INT_MAX . 2^31-1 . -a [step_size [lower_limit]] --auto-abscissa [step_size [lower_limit]] t ( step_size lower_limit 1.0 0.0 ). (`a` `f` `d` `i`) t : () y . y d d . t step_size t lower_limit . . -A --auto-dist-abscissa t . -a . t d- y t 0.0 . t << >> . . -O data-format --output-format data-format data-format . data-format -I . `a` ASCII. -P significant-digits --precision significant-digits t y significant-digits . `a` ASCII . significant- digits ( 6 ). -s --suppress-abscissa t y . y d d d+1. ..SS --help . --version spline (plotting utilities) . (EXAMPLES) echo 0 0 1 1 2 0 | spline . . d << >> . -a -s . echo 0 0 1 0 1 1 0 1 | spline -d 2 -a -s (0,0) (1,0) (1,1) (0,1) . -d 2 y . -a t . -s t . (AUTHORS) spline Robert S. Maier (rsm@math.arizona.edu) Rich Murphey (rich@freebsd.org) . (splines under tension) FITPACK Alan K. Cline (cline@cs.utexas.edu) . (SEE ALSO) "The GNU Plotting Utilities Manual". (BUGS) bug-gnu-utils@gnu.org . FSF Dec 1998 SPLINE(1)