Yes, you need to follow Bj�rn-Helge advice and manipulate the matrix that is given to image. As this creates a copy of your first matrix, this may be expensive if your matrix is large. I do not know of another way. Unfortunately you can *not* use the argument 'x' and 'y' of image() to flip and mirror the image produced; these arguments must given with increasing values.
BTW, do you really want to flip your image (upside down) or you would like to rotate it 180 degrees. If the latter, see http://www.maths.lth.se/help/R/image/ for some image() example code related to this. Try also source("http://www.maths.lth.se/help/R/image/image.R";) Best wishes Henrik Bengtsson Lund University > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of > Bj�rn-Helge Mevik > Sent: den 16 oktober 2003 09:57 > To: [EMAIL PROTECTED] > Subject: Re: [R] How to flip image? > > > Ernie Adorio <[EMAIL PROTECTED]> writes: > > > If not possible, is there any built-in R command to reverse > the rows > > of a > > matrix? > > How about Face[nrow(Face):1, ] ? > > -- > Bj�rn-Helge Mevik > > ______________________________________________ > [EMAIL PROTECTED] mailing list > https://www.stat.math.ethz.ch/mailma> n/listinfo/r-help > > ______________________________________________ [EMAIL PROTECTED] mailing list https://www.stat.math.ethz.ch/mailman/listinfo/r-help
