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author | Karl Berry <karl@freefriends.org> | 2009-05-16 00:19:13 +0000 |
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committer | Karl Berry <karl@freefriends.org> | 2009-05-16 00:19:13 +0000 |
commit | bab45528d65eaafe68a705dbb2a57075c7b7cbd8 (patch) | |
tree | 10b4ae2b5195c8dede153ab89359ec00f55f325f /Build/source/utils/asymptote/examples/spline.asy | |
parent | 8643d90372e9c31e0f461c15c596b60a545bd7d3 (diff) |
asymptote 1.72 sources (not integrated into build yet)
git-svn-id: svn://tug.org/texlive/trunk@13110 c570f23f-e606-0410-a88d-b1316a301751
Diffstat (limited to 'Build/source/utils/asymptote/examples/spline.asy')
-rw-r--r-- | Build/source/utils/asymptote/examples/spline.asy | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/Build/source/utils/asymptote/examples/spline.asy b/Build/source/utils/asymptote/examples/spline.asy new file mode 100644 index 00000000000..9d79ef3a962 --- /dev/null +++ b/Build/source/utils/asymptote/examples/spline.asy @@ -0,0 +1,25 @@ +import graph; +import interpolate; + +size(15cm,15cm,IgnoreAspect); + +real a=1997, b=2002; +int n=5; +real[] xpt=a+sequence(n+1)*(b-a)/n; +real[] ypt={31,36,26,22,21,24}; +horner h=diffdiv(xpt,ypt); +fhorner L=fhorner(h); + +scale(false,true); + +pen p=linewidth(1); + +draw(graph(L,a,b),dashed+black+p,"Lagrange interpolation"); +draw(graph(xpt,ypt,Hermite(natural)),red+p,"natural spline"); +draw(graph(xpt,ypt,Hermite(monotonic)),blue+p,"monotone spline"); +xaxis("$x$",BottomTop,LeftTicks(Step=1,step=0.25)); +yaxis("$y$",LeftRight,RightTicks(Step=5)); + +dot(pairs(xpt,ypt),4bp+gray(0.3)); + +attach(legend(),point(10S),30S); |