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Where does the 'z' come from?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg105406] Where does the 'z' come from?
  • From: Lawrence Teo <lawrenceteo at yahoo.com>
  • Date: Tue, 1 Dec 2009 04:15:29 -0500 (EST)

Mathematica v7.0 has this sample for ContourPlot[]

ListContourPlot[
 Table[Sin[x] Sin[y], {x, -3, 3, 0.1}, {y, -3, 3, 0.1}],
 ContourLabels ->
  Function[{x, y, z}, Text[Framed[z], {x, y}, Background -> White]]]

Where does the z come from?
Can I say that the x and y come from the iteration by Table[]?
Is z an implicit variable?

Thanks


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