Hello!
plot(1:10,main=expression(1 <= "m" <= 5))
The above command works perfectly in R 1.9.1 but returns an error in R 2.0.1
This is documented in NEWS for R 2.0.0 (or ONEWS in R 2.0.1) and it is said:
o R no longer accepts associative use of relational operators.
That is, 3 < 2 < 1 (which used to evalute as TRUE!) now causes
a syntax error. If this breaks existing code, just add
parentheses -- or braces in the case of plotmath.
It is true that the following command does not give en error, however, I do
not what the extra brackets in the plot:
plot(1:10,main=expression(1 <= ("m" <= 5)))
Is it possible to have this thing plotted with the same look as in R 1.9.1?
I apologize if the instruction are in NEWS, since I am not sure how to
interpret exactly this section (especially : "just add parentheses -- or
braces in the case of plotmath".
Thank you in advance for any replies!
Ales Ziberna
I am running binary version of R 2.0.1 (and R 1.9.1) on Windows XP
Here are the R 2.0.1 version details:
$platform
[1] "i386-pc-mingw32"
$arch
[1] "i386"
$os
[1] "mingw32"
$system
[1] "i386, mingw32"
$status
[1] ""
$major
[1] "2"
$minor
[1] "0.1"
$year
[1] "2004"
$month
[1] "11"
$day
[1] "15"
$language
[1] "R"
> .Platform
$OS.type
[1] "windows"
$file.sep
[1] "/"
$dynlib.ext
[1] ".dll"
$GUI
[1] "Rgui"
$endian
[1] "little"
Ale. .iberna wrote:> Hello! > > > > plot(1:10,main=expression(1 <= "m" <= 5)) > > The above command works perfectly in R 1.9.1 but returns an error in R 2.0.1 > > > > This is documented in NEWS for R 2.0.0 (or ONEWS in R 2.0.1) and it is said: > > o R no longer accepts associative use of relational operators. > That is, 3 < 2 < 1 (which used to evalute as TRUE!) now causes > a syntax error. If this breaks existing code, just add > parentheses -- or braces in the case of plotmath. > > > > It is true that the following command does not give en error, however, I do > not what the extra brackets in the plot: > > plot(1:10,main=expression(1 <= ("m" <= 5))) > > > > Is it possible to have this thing plotted with the same look as in R 1.9.1? > I apologize if the instruction are in NEWS, since I am not sure how to > interpret exactly this section (especially : "just add parentheses -- or > braces in the case of plotmath".A good dictionary should tell you that {} rather than () is meant with "braces": plot(1:10,main=expression(1 <= {"m" <= 5})) You have to group it syntactically, that's all. Uwe Ligges> > > Thank you in advance for any replies! > > Ales Ziberna >