Displaying 20 results from an estimated 3000 matches similar to: "na.rm=TRUE"
2010 Jul 23
3
Filtering in R
The dataframe is
id salary
100 500
101 600
102 700
103 800
how can i generate a subsets if salary>600?
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2010 Jul 06
3
how to define a function in R
1. how to write a R script?
2.How to write a SAS like macro/generic process to process multiple files by
using the same funstion in R?
Thanks in advance
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2010 Jul 23
1
MISSING VALUE IN R
I have a DF
ID VALUE
100 120
101 100
102 100
103
104
105
....
when i calculate the sum of the values, it returned NA. should I populate
the blank value as 0?
Thanks,
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2010 Aug 03
2
subset based on column names and then subset based on the inverse (grep?, or...)
I would like to be able to grab x and y columns out of a dataframe and
then grab all of the columns that are not equal to x or y. I am sure
that I am missing something easy.
ftbr_UTM_downstream <- (structure(list(site =
c("Jennie_Creek_Main_Stem", "Wolf_Pit_Creek_Main_Stem",
"Little_Rockfish_Main_Stem_North", "Big_Muddy_Creek_Main_Stem",
2011 Mar 31
2
Linear Model with curve fitting parameter?
I have a model Q=K*A*(R^r)*(S^s)
A, R, and S are data I have and K is a curve fitting parameter. I
have linearized as
log(Q)=log(K)+log(A)+r*log(R)+s*log(S)
I have taken the log of the data that I have and this is the model
formula without the K part
lm(Q~offset(A)+R+S, data=x)
What is the formula that I should use?
Thanks for all of your help. I can provide a subset of data if necessary.
2011 Apr 16
2
(no subject)
I have just upgraded to R 2.13 and have library(ggplot2) in my
.Rprofile (among other things). when i start R I get an error
message. Has something in the start up scripts changed? Is there a
better way to specify the library calls in .Rprofile? Thanks for all
of the help in advance.
Error:
Loading required package: grid
Loading required package: proto
Error in rename(x, .base_to_ggplot) :
2010 Sep 08
1
problem with max in a function
s <- 1.00
max(s)
returns 1
is there anyway that I can get it to return 1.00. I am using the
results of this max statement in a grep statement and it returns the
wrong numbers, I will provide more information and code if it would
make more sense in context.
--
Stephen Sefick
____________________________________
| Auburn University? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ?? |
| Department of
2010 Jul 15
1
loess line predicting number where the line crosses zero twice
These data represent stream channel cross-sectional surveys. I would
like to be able to find the measurement on the tape (measure) where
the Bank Full Depth (bkf_depths) is 0. This will happen twice because
the channel has two sides. I thought fitting a loess line to these
data and then predicting the measurment number would do it. I was
wrong. Below is my failed attempt. My naive thought is
2010 Jun 29
3
formating chron date times for printing
the date were created with chron with this argument
format=c(dates="Y/m/d", times="H:M:S"))
so I have the dates being displayed as
(10/06/22 12:00:00)
I would like to have them displayed as
"2010-06-22 12:00:00" or "%Y-%m-%d %H:%M:%S"
and then I can convert these for mergeing with another data frame
x <- (structure(c(14464, 14464.0104166667,
2010 Jun 29
1
How to allocate more memories to R?
When I use this I am getting following warning at the time of opening R from
that shortcut :
"-max-mem-size=2048MB:too large and taken as 2047M"
Why I am getting this? I have 3GB ram installed and using within Vista.
Thanks
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2010 Sep 03
2
Package wavelets
Hi user's
Does anybody work with wavelets on R?
Please I need some help.....!!!!
Atte
Marize Sim?es
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2010 Dec 15
1
frestimate functionality
By any chance is there an R package that may contain functionality similar to
the frestimate in Matlab/Simulink.
Here is the URL for a description of the frestimate functionality:
http://www.mathworks.com/help/toolbox/slcontrol/ug/frestimate.html
Thank you again for any feedback.
2011 May 17
2
submit R package
Dear all,
I'm just wondering how to submit a package to cran?
I followed the instruction, using anonymous as username and my email address as password, but it didn't connect.
Any hints?
Yan
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2010 Jun 05
1
selecting only specific rows in R
Hi, I have a data frame with columns as follows: tree species
(independent variable) and several dependent variables (e.g. carbon,
nitrogen, phosphorus). Each row represents one tree sample. Some tree
samples are unique species in the data frame while other species were
replicated (i.e. rows 1,2,3 may be identical for the "tree species"
column but have different values for the
2010 Jul 14
2
qplot in ggplot2 not working any longer - (what did I do?)
This is the first time that I have tried to update packages with a
tinkered around with .Rprofile. I start R with R --vanilla and it
does not load my .Rprofile, but when I issue the command
update.packages() R downloads the packages as expected, but then seems
to load .Rprofile before compiling the packages sources. What am I
doing wrong?
kindest regards,
Stephen Sefick
see- Session info
2010 Nov 20
2
Changing the Significance Level in R for Hypothesis Tests and Regression Analysis
Hi,
I have been unable to find how to go about changing the significance level
in R for hypothesis testing and regression analysis. R has a default setting
to alpha=95% (a significance level of 95%), but I want to be able to
decrease or increase this level when necessary. If you could give me
instructions on how to change the significance level in R for hypothesis
testing and regression analysis
2010 Aug 31
4
help - read SAS into R
HI All,
How to read SAS data directly into R ?
Thank you
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2010 Oct 27
3
Increase R precision
Hello everyone.
When I execute the following in R
> (18-46)/(45-93)
[1] 0.5833333
I get small precision for what I am trying to deal with . Is it possible to
increase the precision for this and for other operations?
For example openoffice calc for this operation returns
0.58333333333333300000
I
I would like to thank you for your help
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2013 May 01
3
Chron format question h:m not working
R 2.12.2 on Scientific Linux 6.4
#works
chron(times.="15:00:00", format=c(times="h:m:s"))
#doesn't work
chron(times.="15:00", format=c(times="h:m"))
From chron Manual:
The times format can be any permutation of "h", "m", and "s" separated
by any one non-special character. The default is "h:m:s".
what am I
2010 Sep 16
2
shuffling of data
I have a file that reads like this:
Species,Year,Julian_day
Alnus_glutinosa, 1873, 123
Sorbus_aucuparia, 1873, 122
....(more species...)
Alnus_glutinosa, 1874, 134
Sorbus_aucuparia, 1874, 143
....(more species and years)
Is there a way to plot this as julian day over years so that each species
get a different color?
Also is it possible to convert this data into the format:
Alnus_glutinosa,