Hi > Re: [R] Setting NA to blank > > I asked because I thought it'd solve an issue I had. I was actually being > quite rash in asking this question and for that, I apologize. > > I wanted to know because I was attempting to create a heatmap where the NA > values would not be shown while all the outputs with actual numerical value > will be shown. I had assumed that setting the NA's to blanks would fix the > issue, but it hadn't. I refrained from immediately asking another question > so I that I can look further into this.
If you used heatmap function from stats package I believe that NA values are not displayed so they appear as white. So basically you should not need any change. It is usually better then assume what you think the functions are doing to learn what they actually do by consulting help page. You could also try examples provided at bottom of almost each help page and modify it to suit your needs. Regards Petr > > I hope that answers your question. > > On Mon, May 9, 2011 at 4:21 PM, Ted Harding <ted.hard...@wlandres.net>wrote: > > > John Kane's reply sums it up! (Though you could use "", > > instead of " ", which would give you an "empty string" > > instead of the "space" character; but the resulting > > matrix would still consist entirely of "character" > > elements). > > > > However, the real reason I am following up is to ask > > why you want the blank instead of the NA. > > > > If it is just for printing out or display, then the > > fact that the matrix has been converted to character > > probably does not matter. > > > > But if it is for compatibility with some other > > computational software that (e.g.) expects missing > > values to be represented by a blank, or some "null" > > representation, then it may not be so straightforward. > > > > So, if that might be an issue, please describe for us > > how you intend to use the result. > > > > Ted. > > > > On 09-May-11 19:56:39, Dat Mai wrote: > > > Thank you kind sir! > > > > > > On Mon, May 9, 2011 at 3:25 PM, John Kane <jrkrid...@yahoo.ca> wrote: > > > > > >> > > >> (mat <- matrix(c(1,2,3,NA),2)) > > >> mat[is.na(mat)] <- " " > > >> mat > > >> > > >> But if you have a numerical matrix it coverts the matrix to character. > > >> > > >> --- On Mon, 5/9/11, Dat Mai <dat.d....@gmail.com> wrote: > > >> > > >> > From: Dat Mai <dat.d....@gmail.com> > > >> > Subject: [R] Setting NA to blank > > >> > To: r-help@r-project.org > > >> > Received: Monday, May 9, 2011, 2:46 PM > > >> > Hey All, > > >> > > > >> > I have a matrix m, and I wish to set all the NA values to > > >> > blank. How would I > > >> > do so? > > >> > > > >> > -- > > >> > Best, > > >> > Dat Mai > > >> > PhD Rotation Student > > >> > Albert Einstein College of Medicine > > > > -------------------------------------------------------------------- > > E-Mail: (Ted Harding) <ted.hard...@wlandres.net> > > Fax-to-email: +44 (0)870 094 0861 > > Date: 09-May-11 Time: 21:21:07 > > ------------------------------ XFMail ------------------------------ > > > > > > -- > Best, > Dat Mai > PhD Rotation Student > Albert Einstein College of Medicine > > [[alternative HTML version deleted]] > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.
