Hello,
This is because myBiomodModelEval_55["ROC","Testing.data",,,] is a
vector not an array or matrix. What the error message is saying is that
dim() is not returning a value (it's length is not positive, since it
cannot be negative length(dim(.)) must be zero). Try it.
Or see the class of
Hello
I am new in R. I am trying to implement Biomod 2 package.
However, I have a doubt. I want to calculate the mean and sd of
"Testing.data"
(ROC and TSS)
> # let's print the ROC scores of all selected models
> myBiomodModelEval_55["ROC","Testing.data",,,]
RUN1 RUN2 RUN3 RUN4 RUN5 RUN
Hi R Users,
I do have very big data sets and wanted to run some of the analyses many
times with randomization (1000 times).
I have done the analysis using an example data but it need to be done with
randomized data (1000 times). I am doing manually for 1 times but
taking so much time, I wonder
Subsetting using [] vs. head(), gives different results.
R code:
> head(train$data, 5)
[1] 0 0 1 0 0
> train$data[1:5, 1:5]
5 x 5 sparse Matrix of class "dgCMatrix"
cap-shape=bell cap-shape=conical cap-shape=convex
[1,] . .1
[2,] .
Thank you for your responses.
I guess I don't feel alone. I don't find the documentation go into any
detail.
I also find it surprising that,
> object.size(train$data)
1730904 bytes
> object.size(as.matrix(train$data))
6575016 bytes
the dgCMatrix actually takes less memory, though it *looks* li
> On Oct 20, 2017, at 11:11 AM, C W wrote:
>
> Dear R list,
>
> I came across dgCMatrix. I believe this class is associated with sparse
> matrix.
Yes. See:
help('dgCMatrix-class', pack=Matrix)
If Martin Maechler happens to respond to this you should listen to him rather
than anything I wri
You should not really have worry about the internal structure of such a
thing - just treat it like a matrix. E.g.,
> train$data[1:3,1:3] # dots mean 0's
3 x 3 sparse Matrix of class "dgCMatrix"
cap-shape=bell cap-shape=conical cap-shape=convex
[1,] . .
Dear R list,
I came across dgCMatrix. I believe this class is associated with sparse
matrix.
I see there are 8 attributes to train$data, I am confused why are there so
many, some are vectors, what do they do?
Here's the R code:
library(xgboost)
data(agaricus.train, package='xgboost')
data(agari
Yes, some form of try() is often needed with nls() to avoid scripts stopping.
You might also find nlxb() from package nlsr more reliable in finding
solutions. It uses analytic derivatives if
available if the model is given as an expression, and a Marquardt stabilized
solver. But do expect it to
?tryCatch
--
Sent from my phone. Please excuse my brevity.
On October 20, 2017 7:37:12 AM PDT, Evangelina Viotto
wrote:
>Hello I´m need fitt growth curve with data length-age. I want to
>evaluate
>which is the function that best predicts my data, to do so I compare
>the
>Akaikes of different mo
> PIKAL Petr
> on Fri, 20 Oct 2017 13:35:01 + writes:
> Thank you Martin.
> If I understand correctly, OP could do
> wheat.list <- nlsList(Prop ~ SSfpl(end, A, B, xmid, scal), data=wlg)
(which is really a different model with one parameter more, and
given the relati
The Logistic link does not work well with zero or unit proportions. Try
pulling it away from the edges with
wlg$Prop <- pmin( 1-1e-10, pmax( 1e-10, w1g$Prop ))
Bill Dunlap
TIBCO Software
wdunlap tibco.com
On Thu, Oct 19, 2017 at 11:33 PM, PIKAL Petr wrote:
> Hi
>
> Keep your messages in
Hello I´m need fitt growth curve with data length-age. I want to evaluate
which is the function that best predicts my data, to do so I compare the
Akaikes of different models. I'm now need to evaluate if changing the
initial values changes the parameters and which do not allow to estimate
the model
Thank you Martin.
If I understand correctly, OP could do
wheat.list <- nlsList(Prop ~ SSfpl(end, A, B, xmid, scal), data=wlg)
or add some small value to all zeroes
wlg$prop < -wlg$Prop+1e-7
wheat.list <- nlsList(prop ~ SSlogis(end,Asym, xmid, scal), data=wlg)
which gives fairly reasonable resu
Dear R Help list,
I'm facing a problem with "tk_choose.dir", I try to find an explanation and a
solution.
I use :rm(list=ls(all=TRUE))
datawd<-"/mnt/3-Biot/data_input/"
setwd(datawd) files<-tk_choose.files(filters = matrix(c("/*.csv",".csv"),1, 2,
byrow = TRUE),caption ="Select file with csv for
On 20 October 2017 at 04:21, John wrote:
>
> Hi,
>
>Following Paul's instruction, I have installed the Cairo. I tried to
run
> the program, and there is no error message at all. I did see the Chinese
> title in the plot if I ask my RStudio to show the plot (if I type "p1"),
> but the pdf file
> PIKAL Petr
> on Fri, 20 Oct 2017 06:33:36 + writes:
> Hi
> Keep your messages in the list, you increase your chance to get some
answer.
> I changed your data to groupedData object (see below), but I did not find
any problem in it.
> plot(wlg)
> gives reas
I did not need to select the whole character sentence, otherwise I would know
how to do it.. from basic introduction to R as you suggest.
Grep works perfectly.
f.
--
Francesca Pancotto, PhD
> Il giorno 19 ott 2017, alle ore 18:01, Jeff Newmiller
> ha scritto:
>
Dear R users,
I am happy to announce the most recent version of gpuR has been
released. There are several new enhancements to the package including
the ability to use user written OpenCL kernels. A full list of
changes from the NEWS are shown below.
API Changes:
1. deviceType, gpuInfo, cpuInfo
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