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Ordering polynomials from highest to lowest order

  • To: mathgroup at smc.vnet.net
  • Subject: [mg25933] Ordering polynomials from highest to lowest order
  • From: "Krautschik, Chris G" <krautschikc at intel.co.jp>
  • Date: Thu, 9 Nov 2000 03:04:29 -0500 (EST)
  • Sender: owner-wri-mathgroup at wolfram.com

Dear Mathgroup,

I have a module that generates  the first 37 Zernike polynomials. The output
looks something like this:

zernike[37] = 1 - 42r^2 +420r^4 -1680r^6 +3150r^8 -2772r^10 +924r^12

I would like the ordering of all my polynomials to go from highest order to
lowest. So the output I like to have is the following:

z37= 924r^12 - 2772r^10 + 3150r^8 -1680r^6 +420r^4 - 42r^2 +1

Perhaps the collect command can be used to accomplish this but I am not sure
how since collect seems to order from lowest to highest order.

Thanks,
Chris






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