Displaying 20 results from an estimated 5000 matches similar to: "Gps fraction of degrees function"
2013 Mar 05
1
Reading Wyoming radiosonde data files with RadioSonde package
Hi,
I need to do some analysis on historic daily radiosonde data I download
from the Wyoming Univ. web page (
http://weather.uwyo.edu/upperair/sounding.html).
I am trying to use the RadioSonde package (V 1.3), but the format of the
files from Wyoming don't match what RadioSonde is expecting.
Has anyone used the Radiosonde package on the Wyoming data?
Here is a sample of the Wyoming file
2013 Jun 26
3
XYZ data
I have x, y, z data. The x, y fields dont change but Z does. How do I add a
very small number onto the end of each x, y data point.
For example:
Original (X) Original (Y) Original (Z)
15 20 30
15 20 40
New (X) New (Y)
2011 Dec 27
2
importing NPDB
Does anyone have information about using the National Practitioner Data Bank (NPDB) in R? It's public use data available from the U.S. Department of Health and Human Services that can be downloaded as a .dat or .por file. I can't even figure out how to open the file in R.
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2011 Feb 10
3
Finding length of unique numbers in a vector
Hello there, would you please look into my codes? Here I have following:
> set.seed(100)
> samp <- sample(c(1,-1,0), 20, replace=T); samp
[1] 1 1 -1 1 -1 -1 0 -1 -1 1 -1 0 1 -1 0 0 1 -1 -1 0
Here I want to calculate the length of each unique number for above vector.
How can I do that?
Thanks in advance
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2012 Apr 19
1
SmoothTrend in OpenAir
I'm trying to plot smooth trend using smoothTrend in OpenAir but I'm having
problems.
I used the following code.
---------------------------------------------------------------------------------
#Set my working dir to the dir with my files
setwd("c:/R")
#Load the openair library
library(openair)
#Load the data
mydata <- read.table("MCNP-pH.csv", header=TRUE,
2013 Feb 20
3
NLS results different from Excel -- Tricky fortunes nomination
Folks:
I thought the following excerpt from Bruce McCullough's post would be
a good candidate for the R fortunes package -- except that it's about
Excel, not R! So I nominate it... but leave it to others to say
whether it's really "qualified" to be nominated.
----
"The idea that the Excel solver "has a good reputation for being fast
and accurate" does not
2011 Mar 23
2
mean of runoff for several years
Hello everyone
I have a dataframe with 4 colums (year, month, day, runoff) for 1993-2009.
Now I like to calculate the average runoff for each day. Finally I like to
plot the median runoff for all this years.
I tried with some loops, but it didn't work. Do you have any Tips for my
problem?
Any help is greatly appreciated! Thank you very much.
Dominique
--
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2011 May 10
2
need to delete by time, not date
I have a matrix where one column has a date and another column has a time. I
need to delete all times before 6am. I had combined the Date and Time column
into DateTime.
Mat1:
Weight Date Time
7.6 04/28/11 09:03
8.4 04/29/11 03:11
8.6 04/29/11 05:32
8.6 04/29/11 09:53
1.4 05/01/11 19:52
I tried just picking up the time:
as.POSIXct(Mat1$Time, format = "%H:%M")
but
2011 Nov 01
4
round up a number to 10^4
Hi all,
I have a list of numbers, e.g., X = c(60593.23, 71631.17, 75320.1), and want
to round them so the output is Y = c(60000, 80000, 80000). I tried
Y<-round(X,-4), but it gives me Y = c(60000, 70000, 80000). Do anybody know
how to round up a number to 10^4?
Thank you in advance.
Wendy
--
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2011 May 05
2
Compiling a FORTRAN program under Windows 7
Hi,
I am trying to compile a FORTRAN program to call from R under Windows 7 but
I am having problem in the compiling step. To demonstrate this is the
program testit.f:
------------------------------------------
subroutine TESTIT(x,n,m)
dimension x(n)
do 10 i=1,n
10 x(i)=x(i)**m
end
--------------------------------------------
When I compile it with gfortran I get
2011 Jul 26
2
How to use as.Date (or something else) with "31-Jul-2010 23:59:00"
Hello
I have a huge file (not an R-file) in which the first column is a string
with date, hour, minutes and seconds (For instance, "31-Jul-2010 23:59:00").
I tried as.Date but the error msg was "Error in charToDate(x) :
character string is not in a standard unambiguous format".
I have checked the help for the function as well as date but to no avail.
How can that sort
2011 Jul 19
2
timeDate with month designated by three letters.
Dear R Experts:
I am trying to convert a date and time character field to timeDate where the month is presented as three letters, such as "JUN" for June, etc.
This is an example of the full character field:
"04-MAY-11 1428"
What is the proper format syntax?
I've tried
timeDate("04-MAY-11 1428",format="%d-%m-%y %H%M")
but only get
GMT
[1]
2012 Mar 07
3
GPS handling libraries or (String manipulation)
Dear all,
I would like to ask you if R has a library that can work with different GPS formats
For example
I have a string of this format
N50° 47.513 E006° 03.985
and I would like to convert to GPS decimal format.
that means for example converting the part N50° 47.513
to 50 + 47/60 + 513/3600.
Is it possible to do that with R?
What is the name of such a library?
I would like to thank you in
2009 Feb 19
2
counting strings in a column
Dear All,
I have a query : what is the command to count number of repeated words in a
column.
for ex:
a =
oranges
oranges
apples
apples
grape
oranges
apple
pine
the result should be
oranges 3
apples 3
grape 1
pine 1
is there an easy way for this.
Thanks,
Nataraju
GM R & D
Bangalore
--
"No relationship is Static .. You either Step up or Step down"
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2007 May 30
2
Smoothing a path in 2D
Hello,
I'm currently trying to find a method to interpolate or smooth data that
represent a trajectory in space.
For example, I have an ordered (=time) set of (x,y) tuples which
constitute a path in a 2D space.
Is there a way using R to interpolate between these points in a way
similar to spline interpolation so that I get a smooth path in space?
Greetings,
Dieter
--
Dieter Vanderelst
2006 Jul 13
2
References verifying accuracy of R for basic statistical calculations and tests
Do you know of any references that verify the accuracy of R for basic statistical calculations and tests. The results of these studies should indicate that R results are the same as the results of other statistical packages to a certain number of decimal places on some benchmark calculations.
Thanks,
Corey Powell
Clinical Data Analyst
Broncus Technologies
cpowell@broncus.com
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2013 Feb 06
2
R for Windows 32-bit mode versus 64-bit mode
Hi All:
We are developing (actually updating) a piece of code that runs in R. Due to some limitations of some the libraries we use, at the present time we would be limited to the 32-bit version of R on Windows. Does anyone have a feel (or even real knowledge) if most people these days run R on Windows in 32-bit or 64-bit mode? This would affect some development decisions.
Thanks
-Roy M.
2007 Apr 20
3
Opinion on R plots: connecting X and Y
Attention R users, especially those that are experienced enough to be
opinionated, I need your input.
Consider the following simple plot:
x <- rnorm(100)
y <- rnorm(100)
plot(x, y, bty='n')
A colleague (and dreaded SAS user) commented that she thought that my
plots could be "cleaned up" by connecting the X and Y axes. I know that
I can do that with bty='l' but I
2011 Nov 09
6
Web based R-help not a list
Hello,
Is there a web version of this R-Help user group (such as
the ones under Google Groups) such that
1. I can do a search on any topic over thousands of posts on R easily
and effectively
2. My mailbox do not overflow with emails so that I do not need to
edit it every day
3. I can arrange to receive only the responses to my posts
automatically
4.
2006 Apr 24
3
[O/T] undergrads and R
Dear R People:
Are your undergraduate students receptive to learning R, as a rule?
Most of the time, mine really like it. But this semester, they act as
though they are being eaten by rats when learning R. They are not
trying at all.
Any similar experiences? If anyone has any good ideas, I would be
THRILLED to hear them, as I am using R in Summer School.
Thanks,
Sincerely,
Erin Hodgess