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authorKarl Berry <karl@freefriends.org>2013-04-07 18:26:53 +0000
committerKarl Berry <karl@freefriends.org>2013-04-07 18:26:53 +0000
commitb04c2e1a42573e9735547702356c7b9a769a6855 (patch)
treec0753443f39500a062d7698fe6b94359c813f871 /Master/texmf-dist/doc/asymptote/examples/flow.asy
parentfb0bf13304a356f197bfc1add17f98c07e96f17b (diff)
texmf -> texmf-dist: doc
git-svn-id: svn://tug.org/texlive/trunk@29714 c570f23f-e606-0410-a88d-b1316a301751
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+import graph;
+defaultpen(1.0);
+
+size(0,150,IgnoreAspect);
+
+real arrowsize=4mm;
+real arrowlength=2arrowsize;
+
+typedef path vector(real);
+
+// Return a vector interpolated linearly between a and b.
+vector vector(pair a, pair b) {
+ return new path(real x) {
+ return (0,0)--arrowlength*interp(a,b,x);
+ };
+}
+
+real f(real x) {return 1/x;}
+
+real epsilon=0.5;
+path g=graph(f,epsilon,1/epsilon);
+
+int n=3;
+draw(g);
+xaxis("$x$");
+yaxis("$y$");
+
+add(vectorfield(vector(W,W),g,n,true));
+add(vectorfield(vector(NE,NW),(0,0)--(point(E).x,0),n,true));
+add(vectorfield(vector(NE,NE),(0,0)--(0,point(N).y),n,true));
+