Displaying 20 results from an estimated 400 matches similar to: "Dabbling with R5 setRefClass - Inheritance problems"
2013 Jan 30
0
ROxygen2-Documenting of S4 Method
Hi all,
I'm trying to come to grips with how to document S4 methods using ROxygen -
mostly following posts such as this: http://tinyurl.com/ae3kdno
I just can't get it to work (this is roxygen2_2.2.2).
I attach an example below which seems parsed properly, but "R CMD check"
keeps complaining
> ...
> Undocumented S4 methods:
> ...
> generic 'set<-' and
2012 Jun 25
1
Very simple question R5 setRefClass and Initialize
Hi,
New to this list, and glad I found R5 which si a great improvement to R
for my work.
Something seems odd anyway, when I do a setRefClass, the initialize
method execute at the class definition.
I would like it to execute only when an instance is created.
How can I do that? I found no way to test if the code execution is when
the class definition happens or when a $new instance is created.
2011 Jun 01
1
possibly invalid assertion in setRefClass?
> setRefClass("Foo", fields = list())
Error in setRefClass("Foo", fields = list()) :
A list argument for fields must have nonempty names for all the fields
In my opinion, the above should not fail. There are no fields.
Thanks,
Michael
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2011 Apr 24
0
should I use setRefClass() ?
Hello,
I am somewhat new to R programming and a novice C++ programmer.
I'd like to know if I should use setRefClass() to manage objects, functions,
and data in a very large program I am attempting to code.
See:
http://stat.ethz.ch/R-manual/R-devel/library/methods/html/refClass.html
I like the referential class structure that C++ provides and R seems to
provides via setRefClass(). Mainly
2013 Feb 21
2
Arimax with intervention dummy and multiple covariates
Hi
I'm trying to measure the effect of a policy intervention (Box and Tiao, 1975).
This query has to do with the coding of the model rather than with the particulars of my dataset, so I'm not providing the actual dataset (or a simulated one) in this case, apart from some general description.
The time series are of length n=34 (annual observations between 1977 and 2010). The policy
2011 Nov 04
4
How to delete only those rows in a dataframe in which all records are missing
Hi,
Imagine I have the following data frame:
> a <- c(1,NA,3)
> b <- c(2,NA,NA)
> c <- data.frame(cbind(a,b))
> c
a b
1 1 2
2 NA NA
3 3 NA
I want to delete the second row. If I use na.omit, that would also affect the third row. I tried to use a loop and an ifelse clause with is.na to get R identify that row in which all records are missing, as opposed to the first
2012 Sep 09
5
qplot with many files (each one curve)
Hi,
i would like to plot a few hundred .csv files.
Each file contains one curve with x,y values to plot.
I have been searching for "gnu r read many files qplot"
and similar words. I found for loops that use assign to generate
one variable containing a dataframe.
When i uesed the classic "plot' command i could add
the curves with something like
for... {
2012 Oct 16
1
anova test for variables with different lengths
Hi all,
I want to test whether the MEAN of two different variables, (and
different number of observations) are the same. I am trying to use the
anova test but it doesn't seem to like that the number of observations
are different:
a=c(1:5)
b=c(1:3)
aov_test=aov(a~b)
>>Error in model.frame.default(formula = a ~ b, drop.unused.levels = TRUE) :
variable lengths differ (found for
2012 Nov 09
1
predict.zeroinfl not found
Hi Just a quick problem that I hope is simple to resolve. I'm doing some work with zero inflated poisson models using the pscl package. I can build models using zeroinfl and get outputs fom them with no problem, but when I try to use the predict.zeroinfl function, I get Error: could not find function "predict.zeroinfl".
I was using an older version of R, but still had the same
2012 Sep 27
2
Is there a function that runs AR model with Schwarz Bayesian Information Criteria (BIC)?
Hello,
Is there a function in R by which one can run AR model with Bayesian
Information Criteria (BIC)? To my knowledge, functions ar and ar.ols could
select the order only by AIC.
Thanks,
Miao
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2012 Oct 18
1
Time Series Analysis and Forecasting
Hello,
I am totally new in the field of time series analysis and forecasting and R.
I read that R is a powerful tool for time series. Could anyone give me
navigation what models of time series are availiable in R etc?
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Sent from the R help mailing list archive at Nabble.com.
2012 Aug 22
2
Fwd: Need help
Dear colleagues.
I wonder if anybody knows about a procedure in R to calculate the
Berger-Parker index and the Brillouin Diversity index.
I searched the net but did not find anything good about it.
Thanks a lot for any help
Mayo, Elvira.
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2012 Nov 07
1
Welch Two Sample T-Test
I know when I enter this into R:
> x = c(15, 10, 13, 7, 9, 8, 21, 9, 14, 8)
> y = c(15, 14, 12, 8, 14, 7, 16, 10, 15, 12)
> t.test(x,y,alt="less",var.equal=TRUE)
it shows:
Two Sample t-test
data: x and y
t = -0.5331, df = 18, p-value = 0.3002
alternative hypothesis: true difference in means is less than 0
95 percent confidence interval:
-Inf 2.027436
sample
2012 Nov 07
2
New Learner
Hi Experts,
As i am a new in this forum, let me introduce myself:- i am
Debaranjan, from India, Assam.
I have heard many things about R and its statistical Magic
feature. i am really have nothing knowledge about R language nor have
ever used before. i am only a nursery in R. please help me in learning
R.
I have gone through many study material for R but have gain
nothing
2014 Feb 01
1
Running examples with R5 constructor from package failing
I am having an issue with reference classes (R5) in a package I am developing. They have both been illustrated in the `roxygentest` package I've got hosted on Github [1].?
When I run `R CMD check .` on the source directory of my package I am told that:
> Error: could not find function "Blob"
However, when I install and load the package, I can successfully run the command in the
2012 Nov 08
1
A panel of contour plots through a iteration process
Dear all,
as you can see from the code I want to create *a panel of 11 contour
plots through
a iteration process*. I found a thread that address the issue of plotting
many contour.plots in the same device, but it does not address my problem!
I emphasize that the 11 contour plots must be appeared in the same device
through an iteration process and NOT individually!
par(mfrow=c(4,3)) # I want them
2012 Nov 09
2
Simple Likert count data visualization
Hello,
Before I start to construct something inferior myself I would like to know if such a plot function is already out there.
I have count data of a small survey with a few questions which use a scale from "Strongly disagree" to "Strongly agree" and similar things. What I would like to have for a slide is a plot which shows for each question a line over this scale and the
2012 Feb 21
1
Private Variables in R5-Classes possible?
Hi list,
is there a way to define some kind of private Variable?
I would like to prevent the user from manipulating fields on his own, in
order to not destroy data structures.
The problem is, that as soon as the variable exists in the environment
it is accessible via t$secret_value.
test <- setRefClass("test", fields=list(
secret = function(value){
cat("the function was
2012 Oct 22
5
Represent point size according to frequency
Hello! I would like to make a scatterplot of my data, but the problem is that
several points have the same x and y values and are represented as only one
point. I wonder if there is a way to represent the data points, but with
point size representing the frequency of the depicted x-y value?
Thank you!
--
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2012 Aug 20
1
Combining imputed datasets for analysis using Factor Analysis
Dear R users and developers,
I have a dataset containing 34 variables measured in a survey, which has
some missing items. I would like to conduct a factor analysis of this
data. I tested mi, Amelia, and MissForest as alternative packages in
order to impute the missing data. I now have 5 separate datasets with
the variables I am interested in factor analysing. In my reading of the
package