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<head><title>NAGtrace(ZZ) -- set the trace level in NumericalAlgebraicGeometry package</title>
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<div><h1>NAGtrace(ZZ) -- set the trace level in NumericalAlgebraicGeometry package</h1>
<div class="single"><h2>Synopsis</h2>
<ul><li><div class="list"><dl class="element"><dt class="heading">Usage: </dt><dd class="value"><div><tt>a = NAGtrace b</tt></div>
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<li><span>Function: <a href="___N__A__Gtrace_lp__Z__Z_rp.html" title="set the trace level in NumericalAlgebraicGeometry package">NAGtrace</a></span></li>
<li><div class="single">Inputs:<ul><li><span><span>an <a href="../../Macaulay2Doc/html/___Z__Z.html">integer</a></span>, <tt>b</tt>, new level</span></li>
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<li><div class="single">Outputs:<ul><li><span><tt>a</tt>, old level</span></li>
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<div class="single"><h2>Description</h2>
<div>Determines how talkative the procedures of NumericalAlgebraicGeometry are. The most meaningful values are:<ul><li>0 -- silent</li>
<li>1 -- progress and timings</li>
<li>2 -- more messages than 1</li>
</ul>
The progress is displayed as follows: <ul><li>'.' = regular solution found</li>
<li>'S' = singular solution (or encountered a singular point on the path)</li>
<li>'I' = a homotopy path (most probably) diverged to infinity</li>
<li>'M' = minimum step bound reached</li>
</ul>
<table class="examples"><tr><td><pre>i1 : R = CC[x,y];</pre>
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<tr><td><pre>i2 : S = {x^2-1,y^2-1};</pre>
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<tr><td><pre>i3 : T = {x^2+y^2-1, x+y};</pre>
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<tr><td><pre>i4 : NAGtrace 1
o4 = 0</pre>
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<tr><td><pre>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</pre>
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