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MathGroup Archive 1999

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Plot[] problem (plnr) - help !!!

  • To: mathgroup at smc.vnet.net
  • Subject: [mg15935] Plot[] problem (plnr) - help !!!
  • From: Alexander Sirotkin <root at borjch.math.tau.ac.il>
  • Date: Wed, 17 Feb 1999 23:34:03 -0500
  • Organization: Tel-Aviv University Computation Center
  • Sender: owner-wri-mathgroup at wolfram.com

Hi.

I'm trying to do most trivial and simple thing - define 
some function and then Plot[] it. However, I get some very
weird error - "  ...is not a machine-size real number at ..."

Here is the code :
a[0]==1
a[1]==0.99/50000
H[w] == 20Log[10,Sum[a[k] Exp[I 2Pi w(-k)], {k,0,1}]]
Clear[H]
Plot[H[w], {w, 1, 100}]

I've seen some articles (even at www.wolfram.com) about that
problem, but NONE of them proposed a working solution !!!

Just putting Evaluate[] inside the Plot[] does nothing...


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