Displaying 20 results from an estimated 9000 matches similar to: "Referencing Sys.Date to a different time zone"
2024 Jun 28
1
Referencing Sys.Date to a different time zone
? Fri, 28 Jun 2024 18:52:26 +0200
Dennis Fisher <fisher at plessthan.com> ?????:
> When I issue the command:
> Sys.Date()
> I would like to be able to obtain the value for Pacific time (which
> differ for the first 9 hours of the day)
By the time the value of Sys.Date() is created, it's too late to
discern between Europe and Pacific time. The Date class is intended to
2024 Jun 29
0
R related tools - GUI
For years I used Deducer (Package Deducer) developed by Ian Fellows.?
This is still available and partially remains mostly functional.? He was
working on a new GUI years ago but appears no longer to be in the
pipeline I think replaced by R-Studio.
> Send R-help mailing list submissions to
> r-help at r-project.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>
2010 Feb 12
1
Identifying special characters in a text file
Colleagues
R 2.10.1 on a Mac
I read in textfiles using readLines, then I process those files, then I use R to execute another program. Occasionally those files contain characters other than letter / numbers / routine punctuation marks. For example, a bullet (option-8 on a Mac) triggers the problem.
Although R can read and process those characters, the other program cannot so I would like to
2011 Mar 29
2
Probing a function
R 2.12.2
Windows 7
Colleagues,
I just took advantage of the function:
readWindowsShortcut
in R.utils. It accomplished my goals and I was interested in learning its inner workings. So, I typed the function at the command line (without arguments or parentheses). R returned:
function (...)
UseMethod("readWindowsShortcut")
<environment: namespace:R.utils>
providing no
2011 Mar 25
2
Finding the common portion of strings
Colleagues
R: 2.12.2
OS X
I have a set of text objects in the form (I am showing 3 of what is more likely to be 20 or so):
OBJECTS <- c("abcSOMETHINGCOMMONegf", "xSOMETHINGCOMMONyz", "SOMETHINGCOMMONnme")
As you can see, all contain "SOMETHINGCOMMON" and the position varies. But, I don't know what that "SOMETHINGCOMMON" is.
Is there an
2010 Jul 20
1
Registered / trademark signs
Colleagues,
What is the easiest means to embed a:
? (registered)
or
? (trademark)
sign in text in a graphic. I would like to use mtext and avoid plotmath, if possible. Ideally, the sign should be superscripted but I can easily sacrifice that.
Optimally, I need a solution that works in both OS X and Windows (? XP) and with R versions ? 2.11
Thanks in advance.
Dennis
Dennis Fisher MD
P <
2010 May 05
1
Unexpected call to "require"
Colleagues
I am executing a length script in R (20K lines). At one point, it returns:
> Loading required package: tcltk
> Loading Tcl/Tk interface ... done
> Loading required package: Hmisc
> Loading required package: survival
> Loading required package: stats
> Loading required package: graphics
> Loading required package: splines
> Attaching package: 'Hmisc'
2009 Nov 13
5
Help with complicated regular expression
Colleagues,
I am using R (2.9.2, all platforms) to search for a complicated text
string using regular expressions. I would appreciate any help you can
provide.
The string consists of the following elements:
SOMEWORDWITHNOSPACES
any number of spaces and/or tabs
(
any number of spaces and/or tabs
integer
any number of spaces and/or tabs
)
Examples include:
WORD ( 123 )
WORD(1 )
2010 Mar 24
1
shading an area of a graphic
Colleagues
OS 10.5
R: 2.10.1
I have a simple x-y plot for which I would like to shade the lower (or upper) part of the interior region (i.e., the area bounded by the axes). If the delineation between top and bottom were linear, it would be use to use the polygon function. However, the delineation is a curve (which I can describe by an equation). In theory, I could divide the x-axis into a
2011 Mar 04
1
Environment variable PATH in Windows
Colleagues,
I am trying to understand how R (2.12.1) obtains the PATH environment variable in Windows (7 or Vista). Startup {base} directs one to:
"R_ENVIRON" -- which equals "" in my systems
R_HOME/etc/Renviron.site -- which does not exist
Next, it directs to:
R_HOME/etc/Rprofile.site -- which also does not exist (the expected behavior in a "factory-fresh"
2011 May 26
4
Applying "toupper" to only portions of text strings
Colleagues
Assume that I have a vector containing some text strings, some of which contain a particular character. I could like to apply "toupper" to the text before the character. For example (in this case, "|" is the particular character):
ORIGINAL:
TEXT <- c("aaaa", "bbb|cc", "|ddd")
AFTER APPLICATION OF toupper:
TEXT <-
2012 Sep 27
1
Speeding up time conversion
R 2.15.1
OS X.7.4
Colleagues,
I have a large dataset (27773536 records, the file is several GB) that contains a column of date / time entries in the format:
"2/1/2011 13:25:01"
I need to convert these to numeric values (ideally in seconds; the origin [e.g., 1970-01-01] is not important).
I am using:
as.numeric(strptime(DATA$DATADTM, "%m/%d/%Y %H:%M:%S"))
It takes 21
2017 Dec 01
0
Timezone problem with 3.4.2
Mark
Thanks for pointing this out. I did a default installation of R. Does this mean that I need to reinstall from the command line?
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone / Fax: 1-866-PLessThan (1-866-753-7784)
www.PLessThan.com <http://www.plessthan.com/>
> On Nov 30, 2017, at 6:42 PM, R. Mark Sharp <rmsharp at me.com> wrote:
>
>
2010 Oct 11
1
grep triggering error on unicode character
Colleagues,
[R 2.11; OS X]
I am processing a file on the fly that contains the following text:
XXX??
[email clients may display this differently -- the string is three X's followed by two instances of the letter a with an acute accent]
I read the file with:
X <- readLines(FILENAME)
In this instance, the text of interest is on line 213. When I examine line 213, it reads:
XXX\xe1\xe1
2011 Apr 10
3
Adding margin text to lattice graphics
Colleagues
I am learning lattice graphics (R 2.12.2; OS X). Several days ago, I inquired about adding margin text to lattice graphics. Jim Price offered a useful reply, suggesting that I add:
page = function(page) grid.text('words', x = 0.5, y = 0.01)
to my call to the function. The entire function that he suggested was;
xyplot(1 ~ 1,
par.settings = list(layout.heights =
2018 Feb 22
2
Problem with geterrmessage()
Luke
Thanks ? I revised the code to:
ERRORMESSAGE <- try(source(USERSCRIPTFILE, local=T), silent=T)
print(ERRORMESSAGE) now returns:
$value
[1] 0
$visible
[1] FALSE
Not clear what to make of that.
Dennis
Dennis Fisher MD
P < (The "P Less Than" Company)
Phone / Fax: 1-866-PLessThan (1-866-753-7784)
www.PLessThan.com
> On Feb 22, 2018, at 12:45 PM, luke-tierney at
2010 May 16
1
Reading JPEG file, converting to HEX
Colleagues,
I am using R to assemble RTF documents (which are plain text). I need to embed a JPEG graphic that was created with R. I presume that the steps need to be:
a. read the file into R
b. convert the object to HEX format
c. write the converted object to a textfile.
If I read the file into R using readLines, I get the following (only the first 5 lines shown):
> >
2010 Mar 27
1
string width calculation
Colleagues,
I am trying to create a PDF document in which I use margin text with two different fonts. The resulting text might be:
XXXXXyZZZ
where X and Z are one font and Y is the other.
My plan was to do this in the following manner:
mtext("XXXXX ZZZ", cex=2, adj=0.5, family=SOMEFONT)
mtext("Y", cex=2, adj=??, family=DIFFERENTFONT)
My question regards how to calculate
2012 Oct 04
3
Failure of sas7bdat package
R 2.15.1
OS 10.7
Colleagues
I have been an enthusiastic user of the sas7bdat package in R. However, several recent sas7bdat files sent to me from different sources cannot be read by the package. The error message is:
Error in read.sas7bdat(FILENAME) :
unknown host W32_7PRO please report bugs to sas7bdatRbugs at gmail.com
I examined the file with a text editor and it contains
2009 Dec 04
3
Use of apply rather than a loop
Colleagues,
R 2.9.0 on all platforms
I have a dataset that contains three columns of interest: ID's, serial
elapsed times, and a marker. Representative data:
Subject Time Marker
1 100.5 0
1 101 0
1 102 1
1 103 0
1 105 0
For each subject, I would like to find the time associated with MARKER
== 1, then replace Time with Time - (Time[Marker == 1])
The result for this