Try this: > atan2(1+0i,1i) [1] NaN-Infi
Ravi. > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:r-help- > [EMAIL PROTECTED] On Behalf Of Robin Hankin > Sent: Tuesday, March 28, 2006 9:13 AM > To: RHelp > Subject: [R] atan2(1,1i) > > Hi > > ?atan2 says that atan2(y,x)=atan(y/x) for x and y numeric or complex > vectors. > > Well, I would expect atan2(1,1i) to be equal to atan(-1i), but > > > atan2(1,1i) > Error in atan2(y, x) : Non-numeric argument to mathematical function > > R.version > _ > platform powerpc-apple-darwin8.5.0 > arch powerpc > os darwin8.5.0 > system powerpc, darwin8.5.0 > status alpha > major 2 > minor 3.0 > year 2006 > month 03 > day 27 > svn rev 37590 > language R > version.string Version 2.3.0 alpha (2006-03-27 r37590) > > > > > > > -- > Robin Hankin > Uncertainty Analyst > National Oceanography Centre, Southampton > European Way, Southampton SO14 3ZH, UK > tel 023-8059-7743 > > ______________________________________________ > [email protected] mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide! http://www.R-project.org/posting- > guide.html ______________________________________________ [email protected] mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html
