[R] blank space escape sequence in R?
Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? TIA Mark ––– Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com __ 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] blank space escape sequence in R?
On 25/04/2011 9:01 AM, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? You need to give some context. A blank in a character vector will be printed as a blank, so you are probably talking about something else, but what? Duncan Murdoch __ 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] blank space escape sequence in R?
I use a function that inserts line breaks (\n as escape sequence) according to some criterion when there are blanks in the string. e.g. some text \nand some more text. What I want now is another form of a blank, so my function will not insert a \n at that point. e.g. some text\spaceand some more text Here \space stands for some escape sequence for a blank, which is what I am looking for. So what I need is something that will appear as a blank when printed but not in the string itself. TIA Am 25.04.2011 um 15:05 schrieb Duncan Murdoch: On 25/04/2011 9:01 AM, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? You need to give some context. A blank in a character vector will be printed as a blank, so you are probably talking about something else, but what? Duncan Murdoch Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com [[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.
Re: [R] blank space escape sequence in R?
On 25/04/2011 9:13 AM, Mark Heckmann wrote: I use a function that inserts line breaks (\n as escape sequence) according to some criterion when there are blanks in the string. e.g. some text \nand some more text. What I want now is another form of a blank, so my function will not insert a ”\n at that point. e.g. some text\spaceand some more text Here \space stands for some escape sequence for a blank, which is what I am looking for. So what I need is something that will appear as a blank when printed but not in the string itself. I don't think R has anything like that built in. You'll need to attach a class to your vector of strings, and write a print method for it that does the substitution before printing. Duncan Murdoch TIA Am 25.04.2011 um 15:05 schrieb Duncan Murdoch: On 25/04/2011 9:01 AM, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? You need to give some context. A blank in a character vector will be printed as a blank, so you are probably talking about something else, but what? Duncan Murdoch ––– Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com __ 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] blank space escape sequence in R?
There exists a non-breaking space: http://en.wikipedia.org/wiki/Non-breaking_space Perhaps you could use this. In R on Linux under gnome-terminal I can enter it with CTRL+SHIFT+U00A0. This seems to work: it prints as a space, but is not equal to ' '. I don't know if there are any difficulties using, for example, utf8 encoding in source files (which you'll probably need). Jan On 04/25/2011 03:28 PM, Duncan Murdoch wrote: On 25/04/2011 9:13 AM, Mark Heckmann wrote: I use a function that inserts line breaks (\n as escape sequence) according to some criterion when there are blanks in the string. e.g. some text \nand some more text. What I want now is another form of a blank, so my function will not insert a ”\n at that point. e.g. some text\spaceand some more text Here \space stands for some escape sequence for a blank, which is what I am looking for. So what I need is something that will appear as a blank when printed but not in the string itself. I don't think R has anything like that built in. You'll need to attach a class to your vector of strings, and write a print method for it that does the substitution before printing. Duncan Murdoch TIA Am 25.04.2011 um 15:05 schrieb Duncan Murdoch: On 25/04/2011 9:01 AM, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? You need to give some context. A blank in a character vector will be printed as a blank, so you are probably talking about something else, but what? Duncan Murdoch ––– Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com __ 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.
Re: [R] blank space escape sequence in R?
There exists a non-breaking space: http://en.wikipedia.org/wiki/Non-breaking_space Perhaps you could use this. In R on Linux under gnome-terminal I can enter it with CTRL+SHIFT+U00A0. This seems to work: it prints as a space, but is not equal to ' '. I don't know if there are any difficulties using, for example, utf8 encoding in source files (which you'll probably need). Jan On 04/25/2011 03:28 PM, Duncan Murdoch wrote: On 25/04/2011 9:13 AM, Mark Heckmann wrote: I use a function that inserts line breaks (\n as escape sequence) according to some criterion when there are blanks in the string. e.g. some text \nand some more text. What I want now is another form of a blank, so my function will not insert a ”\n at that point. e.g. some text\spaceand some more text Here \space stands for some escape sequence for a blank, which is what I am looking for. So what I need is something that will appear as a blank when printed but not in the string itself. I don't think R has anything like that built in. You'll need to attach a class to your vector of strings, and write a print method for it that does the substitution before printing. Duncan Murdoch TIA Am 25.04.2011 um 15:05 schrieb Duncan Murdoch: On 25/04/2011 9:01 AM, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? You need to give some context. A blank in a character vector will be printed as a blank, so you are probably talking about something else, but what? Duncan Murdoch ––– Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com __ 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.
Re: [R] blank space escape sequence in R?
On Mon, 25 Apr 2011, Mark Heckmann wrote: I use a function that inserts line breaks (\n as escape sequence) according to some criterion when there are blanks in the string. e.g. some text \nand some more text. What I want now is another form of a blank, so my function will not insert a ?\n at that point. e.g. some text\spaceand some more text Here \space stands for some escape sequence for a blank, which is what I am looking for. So what I need is something that will appear as a blank when printed but not in the string itself. Is it possible to use \x20 or some similar way to evoke the hexadecimal ascii form of blank? That works in perl as does \040 for the octal form. Mike __ 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] blank space escape sequence in R?
You can embed hex escapes in strings (except \x00). The value(s) that you embed will depend on the character encoding used on you platform. If this is UTF-8, or some other ASCII compatible encoding, \x20 will work: foo\x20bar [1] foo bar For other locales, you might try charToRaw( ) to see the binary (hex) representation for the space character on your platform, and substitute this sequence instead. On Mon, 2011-04-25 at 15:01 +0200, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? TIA Mark ––– Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com __ 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.
Re: [R] blank space escape sequence in R?
I may have misread your original email. Whether you use a hex escape or a space character, the resulting string in memory is identical: identical(a\x20b, a b) [1] TRUE But, if you were to read a file containing the six characters a \x20b (say with readLines), then the six characters would be read into memory, and printed like this: a\\x20b That is, not with a space character substituted for \x20. So, now I'm not sure this is a solution. On Mon, 2011-04-25 at 12:24 -0500, Matt Shotwell wrote: You can embed hex escapes in strings (except \x00). The value(s) that you embed will depend on the character encoding used on you platform. If this is UTF-8, or some other ASCII compatible encoding, \x20 will work: foo\x20bar [1] foo bar For other locales, you might try charToRaw( ) to see the binary (hex) representation for the space character on your platform, and substitute this sequence instead. On Mon, 2011-04-25 at 15:01 +0200, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? TIA Mark ––– Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com __ 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. __ 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] blank space escape sequence in R?
On Mon, Apr 25, 2011 at 04:37:15PM +0200, Jan van der Laan wrote: There exists a non-breaking space: http://en.wikipedia.org/wiki/Non-breaking_space Perhaps you could use this. In R on Linux under gnome-terminal I can enter it with CTRL+SHIFT+U00A0. This seems to work: it prints as a space, but is not equal to ' '. This character may be specified as \u00A0. a - abc\u00A0def a [1] abc def The utf-8 representation of the obtained string is charToRaw(a) [1] 61 62 63 c2 a0 64 65 66 Using Unicode package, the string may be analyzed as follows library(Unicode) u_char_inspect(as.u_char_seq(a, )) Code Name Char 1 U+0061 LATIN SMALL LETTER Aa 2 U+0062 LATIN SMALL LETTER Bb 3 U+0063 LATIN SMALL LETTER Cc 4 U+00A0 NO-BREAK SPACE 5 U+0064 LATIN SMALL LETTER Dd 6 U+0065 LATIN SMALL LETTER Ee 7 U+0066 LATIN SMALL LETTER Ff Hope this helps. Petr Savicky. __ 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] blank space escape sequence in R?
Thanks, Matt! \x20 works great for me! Am 25.04.2011 um 19:42 schrieb Matt Shotwell: I may have misread your original email. Whether you use a hex escape or a space character, the resulting string in memory is identical: identical(a\x20b, a b) [1] TRUE But, if you were to read a file containing the six characters a \x20b (say with readLines), then the six characters would be read into memory, and printed like this: a\\x20b That is, not with a space character substituted for \x20. So, now I'm not sure this is a solution. On Mon, 2011-04-25 at 12:24 -0500, Matt Shotwell wrote: You can embed hex escapes in strings (except \x00). The value(s) that you embed will depend on the character encoding used on you platform. If this is UTF-8, or some other ASCII compatible encoding, \x20 will work: foo\x20bar [1] foo bar For other locales, you might try charToRaw( ) to see the binary (hex) representation for the space character on your platform, and substitute this sequence instead. On Mon, 2011-04-25 at 15:01 +0200, Mark Heckmann wrote: Is there a blank space escape sequence in R, i.e. something like \sp etc. to produce a blank space? TIA Mark Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com __ 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. Mark Heckmann Blog: www.markheckmann.de R-Blog: http://ryouready.wordpress.com [[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.
