NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Px vs. MOA/Px Graph for 50mm Prime Lens
From: Peter Hakel
Date: 2010 Jun 26, 19:33 -0700
From: Marcel Tschudin <marcel.e.tschudin@gmail.com>
To: NavList@fer3.com
Sent: Sat, June 26, 2010 1:17:51 AM
Subject: [NavList] Re: Px vs. MOA/Px Graph for 50mm Prime Lens
Greg,
For this sort of problem a spreadsheet program becomes really very
handy even though the human eye can surprisingly well estimate such
(linear) regression lines. On your Mac the spreadsheet program seems
to be Works which I don't know. May be there is an other Mac-user on
NavList who can give you some hints on how such polynomial regressions
can be calculated with a few clicks. Or, as in the case of the
arc-tan-function, how to find the solution using the equivalent of
what "Solver" does in Excel.
Marcel
From: Peter Hakel
Date: 2010 Jun 26, 19:33 -0700
OpenOffice Calc can generate charts and produce polynomial fits in very much the same way as Excel does.
As for the "Solver" tool, perhaps the following info will be useful:
http://www.macworld.co.uk/macsoftware/reviews/index.cfm?reviewid=3020
Peter Hakel
As for the "Solver" tool, perhaps the following info will be useful:
http://www.macworld.co.uk/macsoftware/reviews/index.cfm?reviewid=3020
Peter Hakel
From: Marcel Tschudin <marcel.e.tschudin@gmail.com>
To: NavList@fer3.com
Sent: Sat, June 26, 2010 1:17:51 AM
Subject: [NavList] Re: Px vs. MOA/Px Graph for 50mm Prime Lens
Greg,
For this sort of problem a spreadsheet program becomes really very
handy even though the human eye can surprisingly well estimate such
(linear) regression lines. On your Mac the spreadsheet program seems
to be Works which I don't know. May be there is an other Mac-user on
NavList who can give you some hints on how such polynomial regressions
can be calculated with a few clicks. Or, as in the case of the
arc-tan-function, how to find the solution using the equivalent of
what "Solver" does in Excel.
Marcel
