Displaying 20 results from an estimated 3000 matches similar to: "selecting only specific rows in R"
2011 Jul 26
1
adjusting x-axis labels
I am trying to tweak how my categorical x-axis labels are formatted in
my bar graph. Specifically, I would like to a) decrease the spacing
between lines (e.g. spacing between Dialium and guianensis) b) right
justify the text and c) have each species name align with the center
of the corresponding bar graph.
A simplified version of my code thus far is as follows. I am using
RStudio v.
2011 Jun 21
2
par code help
I am making a barplot using barplot2 from gplots where each bar
represents a specific tree species. I have formatted the species names
on the x-axis so that the genus name is above the species name and
have then rotated the labels 45 degrees to save room. This is my code:
>columncolor<-c("grey20", "grey20", "grey20", "grey70",
2011 May 23
2
Formatting names.arg
I am making a barplot using barplot2 from gplots and would like to
format the names of my categorical variables (tree species) on the x-
axis so that the genus name is above the species name (to save room).
My code so far is:
speciesnames<-c("Dialium guianensis", "Inga alba", "Tachigali
versicolor", "Brosimum utile", "Caryocar
2011 Jun 10
2
Problem loading packages in R 2.13.0 on Mac
I am having problem loading packages in the newest version of R
(2.13.0) on my Mac. I have tried to install various packages (e.g.
lawstat, Rcmdr, car) and load them using the Package Installer and
Package Manager menu options but I get the follow error:
> library(lawstat)
Loading required package: mvtnorm
Error: package 'mvtnorm' could not be loaded
In addition: Warning
2011 May 23
1
denoting post-hoc test differences using letters
Is there code in R to automatically assign letters to different groups
that are found to be statistically significant using a post-hoc test
following an ANOVA? For example, let's say I found that relative rates
of tree growth were statistically significant between tree species
using an ANOVA and then I ran a TukeyHSD post-hoc test to determine
which species were statistically
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.
2008 Oct 15
1
investigating interaction term for a model of Gross Primary Productivity
I am trying to investigate the interaction term in the below. The
paradigm in aquatic systems is that algal production is either
nitrogen (TIN) or Phosphorus limited, and I am trying to investigate
this- what is the best way to go about investigating the interaction
term. I have some thoughts on the above, but I will withhold them to
see what others think. Thanks for your help.
d <-
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
2009 Oct 27
1
option to control the spac between columns in data frame
Hello,
I have a question regarding a way to control the appreance of output
exported by R
when I use capture.output( x, file = "Directory/file.txt") , I get a text
file which when I paste to a word file looks like the first table below.
The following table has its clumns spaced closely so when I paste it to a
word file it looks continuous. Is there any option in R to make the outputs
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 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 Jul 23
1
na.rm=TRUE
POS=sum(x[-1][x[-1]>0],na.rm=TRUE)
is this the correct syntax?
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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 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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