Displaying 20 results from an estimated 1000 matches similar to: "convert 12 time stamp to 24 hour"
2013 Feb 14
5
plot custom x axis ticks values
Readers,
For this data set:
testvalues<-c(10,20,30,40)
How to amend the plot instruction:
plot(testvalues,ann=FALSE,type='l',yaxt='n',xaxt='n')
so that x axis ticks labels can be added to existing graph with
arbitrary value such as 0,100,200,300)?
Thanks in advance.
--
r2151
2013 Feb 15
1
file copy to password protected network drive
I am trying to copy files to a password protected drive which is "Ranch" at
TACC from another network drive. I am logged in to the source drive and can
run R there. The following code does not even find the destination folder.
file.copy("sourcedrive/file.tar", "
username@ranch.tacc.utexas.edu/uniqueID/destinationfolder/file.tar",
overwrite = FALSE)
Thanks in
2013 Oct 16
2
Plot time series data irregularly hourly-spaced
Dear all,
I have a time series of data that I would like to represent in a plot. But
I am facing some problems to do it because the time is represented in
"hours", it can start in one day and end in another day, and it is not
regularly spaced.
My problem is that when I plot my data, my X-axis always starts from the
lower values of my time data. For example, I would like to plot data
2013 Jan 29
2
remove margin between plot and axis
Readers,
Am trying to plot a graph with type 'h' and want to remove the white
space between the plot lines and the x axis. The help section 'par'
suggests that the option 'mai' controls this feature, but the syntax
plot(...mai=c(0,1,1))
is ineffective
Any advice please?
--
r2151
2009 Mar 03
2
Passing an SQL fragment in AR save
I have a basic model class TestTime with no customization.
class TestTime < ActiveRecord::Base
end
I would like to pass the following SQL fragment as part of an AR save
call to TestTime objects. How and where would I do this in the model?
"set c_time=current_time"
(current_time is an SQL method, not a variable).
--
Posted via http://www.ruby-forum.com/.
2008 Mar 03
1
Tapply for Group Specific Means and Proportions
UseRs,
I am working on a dataset (see small example below) where individuals
were followed on a specific date-time combo and multiple repeated
measurements were taken (e.g., height in meters, behavior class in 2
letter code). Observation numbers varied between individual (ranging
from 1 observation for each date-time combo to >50)
I am trying to summarize the data into 1 row per
2009 Aug 21
1
trouble with Vista & reading files
All,
I am having trouble with a "read.table()" function that is inside of
another function. But if I call the function by itself, it works fine.
Moreover, if I run the script on a Mac OS X (with the default Mac OS X
version of R installed, rev 2.8), it works fine. But it does not work if I
run it on windows vista (also default Windows version of R, rev. 2.8).
Again, both
2013 Feb 08
1
plot ᵒ C in graph axis label
Readers,
For a part of the 'plot' command:
...ylab=expression(paste('rate (',degree~C^-1,')'))...
Is it possible to introduce 'thinspace' (e.g. '\thinspace' in LaTeX)
between the degree (?) sign and the centigrade (C) symbol?
--
r2151
2013 Jan 16
1
function approx interpolation of time series data sets
Readers,
Am trying to use the function 'approx' to interpolate time series data sets:
data1:
01:23:40 5
01:23:45 10
01:23:50 12
01:23:55 7
data2:
01:23:42
01:23:47
01:23:51
01:23:54
The objective is to obtain interpolated values of 'data1' column 2 (5,
10, 12, 7) for the times shown in data2. Tried the following command
but received the error shown:
2013 Jan 17
1
Can strptime handle milliseconds or AM/PM?
Readers,
Responding to an old post
(http://tolstoy.newcastle.edu.au/R/e2/help/07/06/18850.html), and
using the example in the manual:
monthextract<-strptime("20/2/06 11:16:16.683", "%m")
monthextract
[1] NA
Why is the result 'NA' and not '2'?
--
r2151
2013 Mar 07
1
create vector from indices interpolated values
Readers,
Is it possible to create a plot command based upon the indices of
missing values in a data set?
dataset1<-read.table(text='
10 2
20 NA
30 5
40 7
50 NA
60 NA
70 2
80 6
90 NA
100 9
')
dataset2<-read.table(text='
0.2
0.4
0.1
0.9
0.2
0.3
1.1
0.7
0.9
0.6
0.4
')
The 'approx' function is used to obtain the interpolated values for
'NA' in dataset1.
2013 Jan 30
1
remove label from specific axis
Readers,
For a graph plot instruction:
plot(seq(10:50),type='h',yaxt='n',yaxs='i',lab=c(20,2,2),xlab='x axis
label',bty='l',main='graph title')
how to remove y-axis label and keep the x-axis label?
_
r2151
2013 Feb 14
1
approxfun values
Readers,
According to the help '?approxfun', the function can be used to obtain
the interpolated values. The following test was tried:
> testinterpolation<-read.csv('test.csv',header=FALSE)
> testinterpolation
V1 V2
1 10 2
2 20 NA
3 30 5
4 40 7
5 50 NA
6 60 NA
7 70 2
8 80 6
9 90 9
10 100 NA
>
2013 Feb 18
2
mtext unicode failure
Readers,
How to solve this unicode input error please?
> postscript("~/tmp/test.eps",width=100/25.4,height=100/25.4,horizontal=FALSE,onefile=TRUE,paper="special")
> testx<-seq(1:5)
> testy<-seq(1:5)
> plot(testy~testx)
> mtext('text (O?)\n more text',side=3,line=1)
Warning messages:
1: In mtext("text (O?)\n more text", side = 3, line =
2009 Oct 26
2
exclude data for boxplot stats using mathematical operator
Readers,
I have a data set as follows:
1,1
2,2
3,3
4,4
5,3
6,2
7,-10
8,-9
9,-3
10,2
11,3
12,4
13,5
14,4
15,3
16,2
17,1
I entered this data set using the command 'read.csv'. I want to
exclude values fewer than zero in column 2 so then I tried the
following command:
boxplot.stats(x[>0,2],do.conf=FALSE)
Error: syntax error, unexpected GT, expecting ',' in
2009 Aug 17
6
graph label greek symbol failure
Readers,
Previous questions about this requirement have been for m$ users, my
failure occurs using linux.
I have tried to add the delta (?) symbol to the y axis label and the
result is &D, using the command:
...ylab="?t"...
Any advice please?
rhelp at conference.jabber.org
mandriva 2008
r 251 (27-06-07)
2007 Mar 01
3
Ajax.PeriodicalUpdater using Effect.Highlight to highlight newly loaded div
Hi folks. So far I have managed to get dataloading into a div froma
php script. This script just passes the time on the server in a div to
the javascript below. I am trying to get the last loaded data to call
Effect.Highlight but it seems to highlight the 2nd last data instead.
Can anyone see what''s going wrong here? I''ve tried everywhere to solve
this.
Check the code in action
2009 Sep 25
2
synchronisation of time series data using interpolation
Readers,
I have data with different time stamps that I wish to plot (for example):
data set 1
time(hh:mm:ss),datum
01:00:00,500
01:00:15,600
01:00:30,750
01:00:45,720
01:01:00,700
01:01:15,725
01:01:30,640
01:01:45,710
data set 2
time,datum
01:00:12,20
01:01:01,55
01:01:55,22
The time interval in data set 1 does not change, but the time interval
in data set 2 does change, such that for a
2009 Aug 17
10
ssh failure due to local error
Readers,
I have tried the following command:
rsync -t *.txt ssh user at remote.machine:
and receive the following error:
rsync: link_stat "local/machinepath/ssh" failed: No such file or directory (2)
rsync error: some files could not be transferred (code 23) at
main.c(1031) [sender=3.0.2]
My understanding of the manual is that the text files on my local
machine should have been
2012 Dec 12
1
remove last row of a data frame
Readers,
For a data set 'a':
1
2
3
4
Please what is the syntax to remove the last row and create a new object 'b':
1
2
3
Thanks.
--
R2151