Displaying 20 results from an estimated 20000 matches similar to: "identical(length(x), 1) returns FALSE, but print(length(x)) is 1, length(x)==1 is TRUE, and is.integer(lenght(x)) is TRUE????"
2010 Jan 19
5
OT: Software for specific visualisation of data...ideas?
Dear List,
A student in the Department where I work would like to produce a graphic
similar to this one:
http://image.guardian.co.uk/sys-files/Guardian/documents/2009/09/16/Public_spending_160909.pdf
Does anyone know if the figure in the pdf can be generated in a specific
software application for example? Any suggestions would be most
gratefully received by the student concerned.
Many thanks,
2012 Dec 29
2
Error in plot.envfit(ef, p.max = 0.1) : (subscript) logical subscript too long
Hello there,
I'm trying to plot vectors with p<0.1 in a NMDS ordination plot using p.max. Below the scripts I'm using. I guess I'm missing something! could you please give me a hand?
species<-metaMDS(species_matrix)ef<-envfit(species,environmentaldata_file,permu=999,na.rm=TRUE)efplot(species, dis="sites")plot(ef,p.max=0.1)
Error in plot.envfit(ef, p.max = 0.1) :
2009 Aug 24
2
Formulas in gam function of mgcv package
Dear R-experts,
I have a question on the formulas used in the gam function of the mgcv
package.
I am trying to understand the relationships between:
y~s(x1)+s(x2)+s(x3)+s(x4)
and
y~s(x1,x2,x3,x4)
Does the latter contain the former? what about the smoothers of all
interaction terms?
I have (tried to) read the manual pages of gam, formula.gam, smooth.terms,
linear.functional.terms but
2009 Aug 24
2
Formulas in gam function of mgcv package
Dear R-experts,
I have a question on the formulas used in the gam function of the mgcv
package.
I am trying to understand the relationships between:
y~s(x1)+s(x2)+s(x3)+s(x4)
and
y~s(x1,x2,x3,x4)
Does the latter contain the former? what about the smoothers of all
interaction terms?
I have (tried to) read the manual pages of gam, formula.gam, smooth.terms,
linear.functional.terms but
2009 Aug 08
2
Factor Analysis in R
Hi I am trying to run Factor Analysis using R...I am using the syntax
factanal(m1, factors=3) but it's giving me an message Error in cov.wt(z) :
'x' must contain finite values only
...I am using a data set which is having only numeric variables and have
some NA's also in it..What should I do next..Someone please help me out with
the syntax..Thanks in advance
Cheers
Arup
--
2006 Oct 31
3
one problem about how to hold graphic with R
Sorry to disturb you, but can you help me to solve one little problem?
I want to draw a graphic after another with R
but I cannot find the first one after that.
Do you know the command to hold the graphic with R?
I remember with Matlab you may use "hold on".
Thanks.
--
Baohua Yang
Email:yangbaohua@gmail.com
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2008 Mar 03
7
help for the first poster- a simple question
Hi, there,
I cannot get accurate value for calculation.
for example:
ld<-sqrt(1*0.05*0.95*0.05*0.95)
0.05*0.95-ld=-6.938894e-18
0.05*0.95-ld==0 is False.
I met this problem in my program, how can I handle it. Thanks.
xj.
2010 Feb 15
1
GAM for non-integer proportions
Dear list,
I´m using the mgcv package to model the proportion by weight of certain prey
on the stomach content of a predator. This proportion is the ratio of two
weights (prey weight over stomach weight), and ranges between 0 and 1. The
variance is low when proportion is close to 0 and 1, and higher at
intermediate values.
It seems that the best way to go is to model this using the
2010 Aug 21
4
basic hist() question
Hi list
I loaded the content of a file dureetasks.txt to variable a. This file
contains an interger per line.
when I print a vector, it displays correctly.
however, when I try to print the histogram, I get this error message
> a=read.table("dureetasks.txt")
> hist(a)
Error in hist.default(a) : 'x' must be numeric
Can you help please?
regards
--
PhD candidate in
2011 Nov 18
1
cca with repeated measures
Dear all,
How can I run a constrained correspondence analysis with
the following data:
15 animals were measured repeatedly month-wise (over to 2 years)
according to ther diet composition (8 food categories).
our data.frame looks like this:
food 1 2 ... 8 sex season year animal
freq 12 8 ... 1 0 summer 2011 1
freq 0 7 ... 0 1 winter 2011 1
...
freq 0 7 ... 0 1 spring 2011 15
We
2008 Jul 23
2
Weighted variance function?
There is a R function to calculate weighted mean : weighted.mean() under
stats package. Is there any direct R function for calculating weighted
variance as well?
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2009 Nov 05
2
annotating time axis by axis.POSIXct
Dear all
I try to format labels on axis as standard ones does not look well, but I
am not able to make axis.POSIXct to work. here is an example
x<-seq(as.Date("2008-1-1"), as.Date("2009-9-6"), by="2 months")
y<-rnorm(11)
plot(x,y) #not very sophisticated axis
plot(x,y, axes=F)
axis(2)
axis.POSIXct(1, at=x, format="%m/%Y") # no axis
The same is on
2010 Jul 14
4
reverse string
Dear all,
Are there any functions in R to reverse the order of the string.
smth like reverse("abc") to get "cba"?
Thanks a lot.
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2007 Jul 22
2
Data Set
Hi Sir
I have made a data set having 23 stations of rainfall.
when I use the attach function to approach indevidual stations then
following error occurr.
*>attach(data)*
*>S.Sharif #S.Sharif is the station name which has 50 data values*
*Error: object "S.Sharif" not found*
Now how to solve this problem.
Thank You
Regards
--
AMINA SHAHZADI
Department of Statistics
GC
2009 Apr 08
2
sourced plot commands not working
I have source a script running with no errors that ends in these lines:
==============
for (i in 2:3) win.graph()
dev.set(2)
levelplot(avg ~ procs * size, rrt, drape=T, colorkey=T,main="ops/sec",scales=list(x=list(tick.number=15),y=list(log=10)))
dev.set(3)
levelplot(avg ~ procs * size, ort, drape=T, colorkey=T,main="ops/sec",scales=list(x=list(tick.number=15),y=list(log=10)))
2009 Sep 09
2
"predict"-fuction for metaMDS (vegan)
Dear r-Community,
Step1: I would like to calculate a NMDS (package vegan, function metaMDS) with species data.
Step2: Then I want to plot environmental variables over it, using function envfit.
The Problem: One of these environmental variables is cos(EXPOSURE). But for flat releves there is no exposure. The value is missing and I can't call it 0 as 0 stands for east and west. Therefore I
2009 Aug 08
2
Problem using model.frame with argument subset in own function
Dear List,
I am writing a formula method for a function in a package I maintain. I
want the method to return a data.frame that potentially only contains
some of the variables in 'data', as specified by the formula.
The problem I am having is in writing the function and wrapping it
around model.frame. Consider the following data frame:
dat <- data.frame(A = runif(10), B = runif(10), C
2009 May 16
5
bagged importance estimates in earth problem
I was trying to produced bagged importance estimates of attributes in earth using the caret package with the following commands:
fit2 <- bagEarth(loyalty ~ ., data=model1, B = 10)
bagImpGCV <- varImp(fit2,value="gcv")
My bootstrap estimates are produced however the second command "varImp" produces the following error:
Error in UseMethod("varImp") : no
2007 May 28
1
'trim' must be numeric of length one?
Hi everybody,
When I followed a practice example, I got an error as follows:
########################################################################
#######################################
> cc<-read.table('example5_2.dat',header=TRUE)
> cc
EXAM1 EXAM2 EXAM3 EXAM4 EXAM5
1 45 34 23 35 50
2 23 36 66 66 34
3 67 59 72 80 69
4 56
2009 Oct 13
1
vis.gam() contour plots
Greetings,
I have what I hope is a simple question. I would like to change my
contour interval on the vis.gam( plot.type="contour") in the mgcv
package. Is this a situation where I need to modify the function or is
there a default value I can change?
Thanks