According to http://us3.php.net/math, M_PI is a PHP constant. Unless I'm reading that incorrectly, which at this point is entirely possible...:)
JS James Keeline wrote: >>James Keeline wrote: >> >> >>$Hdg=2*M_PI-acos((sin($lat2)-sin($lat1)*cos($miles))/(sin($miles)*cos($lat1))); >> >> >>> >>> >>>Also, you have this item: >>> >>> 2*M_PI >>> >>>Have you defined a constant called M_PI or do you expect it to be a >>> >>> >>variable? >> >> > >--- Jamey Saunders <[EMAIL PROTECTED]> wrote: > > > >>I've done a degrees to radians conversion before running the expression, >>and a radians to degrees conversion afterwards, and I'm getting no more >>errors. I'm not getting the correct answer, but it's progress. >> >>It's not a Google Maps app right now, rather just a quick >>proof-of-concept thing. (Proof that I can do it!) It may morph into >>one in the future...:) >> >>Thanks, >>JS >> >> > > >Is M_PI defined as a constant or is it supposed to be a variable? Without a >dollar sign, PHP thinks it is a constant. > >James >_____ > > >James D. Keeline >http://www.Keeline.com http://www.Keeline.com/articles >http://Stratemeyer.org http://www.Keeline.com/TSCollection > >http://www.ITeachPHP.com -- Free Computer Classes: Linux, PHP, etc. >Fall Semester Begins Sep 7 -- New Classes Start Every Few Weeks. > > > >Community email addresses: > Post message: [email protected] > Subscribe: [EMAIL PROTECTED] > Unsubscribe: [EMAIL PROTECTED] > List owner: [EMAIL PROTECTED] > >Shortcut URL to this page: > http://groups.yahoo.com/group/php-list >Yahoo! Groups Links > > > > > > > > > ------------------------ Yahoo! Groups Sponsor --------------------~--> Most low income households are not online. Help bridge the digital divide today! http://us.click.yahoo.com/cd_AJB/QnQLAA/TtwFAA/HKFolB/TM --------------------------------------------------------------------~-> Community email addresses: Post message: [email protected] Subscribe: [EMAIL PROTECTED] Unsubscribe: [EMAIL PROTECTED] List owner: [EMAIL PROTECTED] Shortcut URL to this page: http://groups.yahoo.com/group/php-list Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/php-list/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
