Displaying 20 results from an estimated 200 matches similar to: "Removing columns that are na or constant"
2017 Jul 28
2
R Programming help needed - Returning dataframes + 2 Variables dynamically
Hi,
Can someone please help me on below issue I am facing :
I am trying to play with returning a dataframe+2 variables using a fn.
But facing an issue :
Error in Logic_fn(c(x, y)) : argument "y" is missing, with no default
This is the code I am using :
x <- 0
y <- 0
Logic_fn <- function(x,y){
x <- x + 1
y < y + 1
test_data <- rbind(x,y)
test_data <-
2017 Jul 28
1
R Programming help needed - Returning dataframes + 2 Variables dynamically
The returned values are in the list you assign to test_data, the original x and y are not modified, i.e the returned value for x will be test_data[[1]] and for y will be test_data[[2]]. Using the same variable names in the function and test is perhaps what is leading to confusion.
> On 28 Jul 2017, at 09:13, Vijaya Kumar Regati <VijayaKumar.Regati at m3bi.com> wrote:
>
> Hi,
>
2017 Jul 28
0
R Programming help needed - Returning dataframes + 2 Variables dynamically
Hi,
That was very useful information. Thanks.
But still I am not able to get the desired output with updated code.
Kindly help if you have any further thoughts ...
Updated code :
x <- 0
y <- 0
Logic_fn <- function(x,y){
print("Passed Values")
print(x)
print(y)
x <- x + 1
y <- y + 1
print("After addition :")
print(x)
print(y)
test_data <- rbind(x,y)
2017 Jul 28
4
R Programming help needed - Returning dataframes + 2 Variables dynamically
c() is used for constructing vectors. Or in other words using the method
c(x,y) provides a vector of length 2 (hopefully). Therefore, you are
pushing a single vector to your function and not two arguments as you want.
It should be Logic_fn(x,y) not Logic_fn(c(x,y)).
Furthermore, i would recommend reading up on how function constructs work.
Two return statements within a function are redundant
2009 Oct 23
1
Data format for KSVM
Hi,
I have a process using svm from the e1071 library. it works.
I want to try using the KSVM library instead. The same data used wiht
e1071 gives me an error with KSVM.
My data is a data.frame.
sample code:
svm_formula <- formula(y ~ a + B + C)
svm_model <- ksvm(formula, data=train_data, type="C-svc",
kernel="rbfdot", C=1)
I get the following error:
2012 Feb 15
1
Passing date as parameter while retrieving data from database using dbGetQuery
Hi All,
This might be simple question, I need to retrive data for modelling from the
databases. Eveytime date values changes so I countnot fix date value in the
code, it is required to pass as parameter.
When I pass the date as parameter, it throws error.
(ERROR: column "start_dt" does not exist Position: 285)
My script is as below, please guide me where am I going wrong?
All parameters
2006 Feb 27
1
question about Principal Component Analysis in R?
Hi all,
I am wondering in R, suppose I did the principal component analysis on
training data set and obtain the rotation matrix, via:
> pca=prcomp(training_data, center=TRUE, scale=FALSE, retx=TRUE);
Then I want to rotate the test data set using the
> d1=scale(test_data, center=TRUE, scale=FALSE) %*% pca$rotation;
> d2=predict(pca, test_data, center=TRUE, scale=FALSE);
these two
2009 Aug 02
2
Strange column shifting with read.table
Hi,
I am reading in a dataframe from a CSV file. It has 70 columns. I do
not have any kind of unique "row id".
rawdata <- read.table("r_work/train_data.csv", header=T, sep=",",
na.strings=0)
When training an svm, I keep getting an error
So, as an experiment, I wrote the data back out to a new file so that I
could see what the svm function sees.
2011 Jun 16
1
Question about R.oo package
Dear R.oo package users,
while testing some functionality of the R.oo, I found that during the first construction of a object from a class, the constructor is twice called, but only one object is finalized.
In all subsequent creation processes, the constructor is (expectedly) called once.
Here some example code:
library(R.oo)
setConstructorS3("Test_class",function(val) {
2018 Jun 29
1
OPUS on cortex M4
Hi everybody
I wrote a couple of months ago about implementing the opus codec on a DK52 from Nordic (nrf52832 MCU, Cortex M4). In the meantime I got a bit further and would again like to ask some questions.
My settings:
I included all the opus files into my project (opus-1.2.1)
Defined: FIXED POINT, VAR_ARRAYS, DISABLE FLOAT API, OPUS_BUILD, CELT_MODE_ONLY
I am able to allocate enough memory
2009 Nov 26
2
Puppet+Foreman: class into module couldn't apply on nodes
Hello,
I try config puppet with foreman frontend. Into puppetmasterd I create
modules "test" and create init.pp:
# Create "/tmp/testfile" if it doesn''t exist.
class test_class {
file { "/tmp/testfile":
ensure => present,
mode => 644,
owner => root,
group => root
}
}
Configure nodes in site.pp and import
2012 May 11
3
Calculating all possible ratios
I have a data matrix with genes as columns and samples as rows. I want to
create all possible gene ratios.Is there an elegant and fast way to do it in
R and write it to a dataframe?
Thanks for any help.
Som.
--
View this message in context: http://r.789695.n4.nabble.com/Calculating-all-possible-ratios-tp4627405.html
Sent from the R help mailing list archive at Nabble.com.
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2018 Jun 02
2
Prediccion de series temporales con keras
Buenas
Alguien sabe como se hacen las predicciones de las series temporslea usando keras?
Baaado en esto:
https://tensorflow.rstudio.com/blog/time-series-forecasting-with-recurrent-neural-networks.html
He intentado hacer un predict_generator(test_data) pero siempre me devuelve el error de que el array no coincid con las dimensiones
Gracias!!
Obtener Outlook para
2009 Sep 17
2
QQ plotting of various distributions...
Hello!
I am trying with this question again:
I would like to test few distributional assumptions for some behavioral
response data. There are few theories about true distribution of those
data, like: normal, lognormal, gamma, ex-Gaussian
(exponential-Gaussian), Wald (inverse Gaussian) etc. The best way would
be via qq-plot, to show to students differences. First two are trivial:
qqnorm(dat$X)
2017 Aug 08
1
[PATCH] drm/virtio: make drm_fb_helper_funcs const
Make these structures const as they are only passed to the function
drm_fb_helper_prepare and the corresponding argument is of type const.
Done using Coccinelle
@match disable optional_qualifier@
identifier s;
@@
static struct drm_fb_helper_funcs s = {...};
@ref@
position p;
identifier match.s;
@@
s at p
@good1@
identifier match.s;
expression e1,e2;
position ref.p;
@@
2017 Aug 08
1
[PATCH] drm/virtio: make drm_fb_helper_funcs const
Make these structures const as they are only passed to the function
drm_fb_helper_prepare and the corresponding argument is of type const.
Done using Coccinelle
@match disable optional_qualifier@
identifier s;
@@
static struct drm_fb_helper_funcs s = {...};
@ref@
position p;
identifier match.s;
@@
s at p
@good1@
identifier match.s;
expression e1,e2;
position ref.p;
@@
2017 Nov 14
1
Re: [PATCH v12 3/3] New tool: virt-builder-repository
On Mon, Nov 13, 2017 at 02:56:12PM +0100, Cédric Bosdonnat wrote:
> +let checksums_get_sha512 = function
> + | None -> None
> + | Some csums ->
> + try
> + Some (List.find (
> + function
> + | Checksums.SHA512 _ -> true
> + | _ -> false
> + ) csums)
> + with Not_found -> None
This is still a bit
2009 Dec 03
1
Could not retrieve catalog
Hello all,
I''m running puppet for the first ime. I''ve finished the install but
I''m stuck at the certificate part.
The puppet master (0.24.4-3) is running on Ubuntu Lenny and the puppet
client (0.24.8-4.el5) is running on CentOS 5.3.
After the install, from the client side, I''ve run:
puppetd --server puppetmaster.domain.com --waitforcert 60 --test
On the
2018 Jun 02
3
Prediccion de series temporales con keras
Es justo ese ejemplo el que estoy mirando, pero no sale la prediccion
He probado a cambiar la funcion generadora, haciendo que devuelva como lista solo los input, pero sigue devolviendo error:
Error in py_call_impl(callable, dots$args, dots$keywords) :
ValueError: Error when checking model : the list of Numpy arrays that you are passing to your model is not the size the model expected.
2017 Nov 13
6
[PATCH v12 0/3] virt-builder-repository tool
Hi there!
Here is the latest version of the series including Richard's comments.
I also reworked the repository_main.ml code to avoid setting an
empty entry if not found.
Cédric Bosdonnat (3):
builder: change arch type to distinguish guesses
builder: add a template parameter to get_index
New tool: virt-builder-repository
.gitignore | 4 +