Re: [R] puzzled with plotmath for matrix indices
Gerrit, thanks viele Grüße nach Oberhessen :-) plot (1, 1, ylab = expression (Z[list(i,i)])) though that cannot be evaluated, either (due to [ not knowing what to do with an index list) for future searches: probably the easiest cheat is, of course, plot (1, 1, ylab = expression (Z[i, i])) Anyways, I put the how to into the R Wiki page on plotmath. And I suggest that it should be mentioned in the plotmath help = email to r-devel. Claudia -- Claudia Beleites Dipartimento dei Materiali e delle Risorse Naturali Università degli Studi di Trieste Via Alfonso Valerio 6/a I-34127 Trieste phone: +39 0 40 5 58-37 68 email: cbelei...@units.it __ 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.
Re: [R] puzzled with plotmath for matrix indices
On 20.01.2011 14:08, Claudia Beleites wrote: Gerrit, thanks viele Grüße nach Oberhessen :-) plot (1, 1, ylab = expression (Z[list(i,i)])) though that cannot be evaluated, either (due to [ not knowing what to do with an index list) Works for me with a recent R version. for future searches: probably the easiest cheat is, of course, plot (1, 1, ylab = expression (Z[i, i])) which is less convenient since you could not replace i by a dynamically calculated number, for example. Best, Uwe Ligges Anyways, I put the how to into the R Wiki page on plotmath. And I suggest that it should be mentioned in the plotmath help = email to r-devel. Claudia __ 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.
Re: [R] puzzled with plotmath for matrix indices
On 01/20/2011 02:11 PM, Uwe Ligges wrote: On 20.01.2011 14:08, Claudia Beleites wrote: Gerrit, thanks viele Grüße nach Oberhessen :-) plot (1, 1, ylab = expression (Z[list(i,i)])) though that cannot be evaluated, either (due to [ not knowing what to do with an index list) Works for me with a recent R version. Sorry, my comment wasn't clear: sure it produces the desired output, what I meant is: Z [,1] [,2] [1,]13 [2,]24 i - 2 eval (expression (Z[list(i,i)])) Error in Z[list(i, i)] : invalid subscript type 'list' whereas: eval (expression (Z[i,i])) [1] 4 (and of course all the text-based solutions also lack the beauty of the expression actually meaning in R what the output looks like) for future searches: probably the easiest cheat is, of course, plot (1, 1, ylab = expression (Z[i, i])) which is less convenient since you could not replace i by a dynamically calculated number, for example. good point. Thanks, I learn a lot here :-) Claudia -- Claudia Beleites Dipartimento dei Materiali e delle Risorse Naturali Università degli Studi di Trieste Via Alfonso Valerio 6/a I-34127 Trieste phone: +39 0 40 5 58-37 68 email: cbelei...@units.it __ 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.
Re: [R] puzzled with plotmath for matrix indices
Claudia, Mittelhessen! ;-) thanks viele Grüße nach Oberhessen :-) plot (1, 1, ylab = expression (Z[list(i,i)])) though that cannot be evaluated, either (due to [ not knowing what to do with an index list) Something is missing; this last sentence of yours appears to be not complete, does it? Regarding Uwe's remark and Peter's nice aesthetic suggestion: plot( 1, 1, xlab = substitute( Z[list(~i, j)], list( i = 1, j = 2))) should solve both problems. This does work even in R as old as 2.7.1 (and, of course, for a more recent version as Uwe already stated). Best regards / Beste Grüße -- Gerrit__ 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.
