next | previous | forward | backward | up | top | index | toc | Macaulay2 web site

NAGtrace(ZZ) -- set the trace level in NumericalAlgebraicGeometry package

Synopsis

Description

Determines how talkative the procedures of NumericalAlgebraicGeometry are. The most meaningful values are:
  • 0 -- silent
  • 1 -- progress and timings
  • 2 -- more messages than 1
The progress is displayed as follows:
  • '.' = regular solution found
  • 'S' = singular solution (or encountered a singular point on the path)
  • 'I' = a homotopy path (most probably) diverged to infinity
  • 'M' = minimum step bound reached
i1 : R = CC[x,y];
i2 : S = {x^2-1,y^2-1};
i3 : T = {x^2+y^2-1, x+y};
i4 : NAGtrace 1

o4 = 0
i5 : track(S,T,{(1,1),(1,-1),(-1,1),(-1,-1)})

.M.MSetup time: 0
Computing time:0

o5 = {{{.707107, -.707107}}, {{.296196, -1.40024}}, {{-.707107, .707107}},
     ------------------------------------------------------------------------
     {{.290943, -1.40261}}}

o5 : List