Displaying 20 results from an estimated 10000 matches similar to: "[SQL]"
2019 Feb 02
1
Set the number of threads using openmp with .Fortran?
I got this to work on Linux but it is not working on Windows. *My
understanding is that this should also work on windows, is that correct?*
If so, what should I do? differently?
To get it to work on Linux, I modified my R script as follows:
#' OpenMP Hello World
#'
#' @param nthreads The number of threads that you want to use
#' @example
#' hello(nthreads=2)
#' @export
2019 Feb 01
2
Set the number of threads using openmp with .Fortran?
Hi everybody,
I'm trying to develop an R package with Fortran and OpenMP. I wrote a
simple hello world but I'm not able to set the number of threads. I found this
old email chain
<http://r.789695.n4.nabble.com/Set-the-number-of-threads-using-openmp-with-C-td2284685.html>
and
I tried to set my compile instructions accordingly but i had no luck.
*This is my makevars:*
2015 Jul 13
2
Crear datos aleatorios con restriciones
Perdon por no se lo suficientemente claro :(
Tu codigo produce `validPairs` que tiene 7 variables y 360 observaciones.
Donde
> validPairs[1,] V1 V2 V3 V4 V5 V6 valid
60 e1 g1 c1 e1 g1 c2 Valid
indica que un maestro tiene asignado c1 y c2 en la escuela e1 y el grado
g1. Correcto? Si es asi, esto es casi lo que queira producir y creo que
puedo llegar a donde quiero usando tu codigo de base.
2015 Jul 13
2
Crear datos aleatorios con restriciones
Gracias Carlos,
Tu codigo es un gran paso en el sentido correcto pero no produce
exactamente lo que estoy buscando.
Mi "solucion" en stackoverflow
<http://stackoverflow.com/questions/31137940/randomly-assign-teachers-to-classrooms-imposing-restrictions/31143808#31143808>
produce un data frame `schoolGrade` con 240 observaciones y 7 variables. Mi
objetivo es poder generar un data
2015 Jul 13
2
Crear datos aleatorios con restriciones
Hola,
0. La falta de 'elegancia' hace que sea mas dificil hacer cambios al
codigo. Por ejemplo cambiar n.classrooms <- 4 a n.classrooms <- 20
1. Cuando tengo solo 4 puedo hacer esto:
schoolGrade$A <- Teachers$Teacher.ID[1:cuttoff1]
schoolGrade$B <- Teachers$Teacher.ID[1:cuttoff1]
schoolGrade$C <- Teachers$Teacher.ID[(cuttoff1+1):n.teachers]
schoolGrade$D <-
2013 Mar 21
2
NADA
Dear Users
Regarding the NADA package, would anyone be able to help me understand what
values are actually plotted on the Y axis of the plot obtained by using the
*ros* function on the data and plotting the result with the plot()
function? The Y axis is labeled "Values". According to the NADA user
manual, ros performs a log transformation of the data by default, but the
user can specify
2012 Apr 09
3
For loops
Hi,
I am having trouble with syntax for a for loop. Here is what I am trying to
do.
class=c(rep(1,3),rep(2,3),rep(3,3))
out1=rnorm(length(class))
out2=rnorm(length(class))
out3=rnorm(length(class))
data=data.frame(class,out1,out2,out3)
dat.split=split(data,data$class)
for(i in 1:3){
sub[i]=dat.split[i]
}
However, the for loop doesn't work. I want to assign each split to a
different
2013 Oct 19
2
ivreg with fixed effect in R?
I want to estimate the following fixed effect model:
y_i,t = alpha_i + beta_1 x1_t + beta_2 x2_i,tx2_i,t = gamma_i + gamma_1
x1_t + gamma_2 Z1_i + gamma_3 Z2_i
I can use ivreg from AER to do the iv regression.
fm <- ivreg(y_i,t ~ x1_t + x2_i,t | x1_t + Z1_i + Z2_i,
data = DataSet)
But, I'm not sure how can I add the fixed effects.
Thanks!
[[alternative HTML
2017 Jun 07
2
purrr::pmap does not work
Hi All,
I try to do a scatterplot for a bunch of variables. I plot a dependent
variable against a bunch of independent variables:
-- cut --
graphics::plot(
v01_r01 ~ v08_01_up11,
data = dataset,
xlab = "Dependent",
ylab = "Independent #1"
)
-- cut --
It is tedious to repeat the statement for all independent variables. Found
an alternative, i.e. :
-- cut --
mu
2015 Jul 27
2
R package with Fortran module on Windows? undefined reference to `__stack_chk_fail'
Hi,
I created a R library that uses a Fortran module. Everything works like a
charm on linux.
Now I'm trying to make it work on Windows. I cloned my git repository
<https://github.com/ignacio82/MyPi> on a windows computer, and when I press
the build and reload button on Rstudio I get these errors:
==> Rcmd.exe INSTALL --no-multiarch --with-keep.source MyPi
* installing to library
2013 Mar 13
7
Export R generated tables and figures to MS Word
Dear Rxperts,
I am aware of Sweave that generates reports into a pdf, but do know of any
tools to generate to export to a MS Word document...
Is there a way to use R to generate and export report/publication quality
tables and figures and export them to MS word (for reporting purposes)?
Thanks so much,
Santosh
[[alternative HTML version deleted]]
2012 Oct 26
1
SQL via RODBC
Hi list,
Is there a way to use sqlQuery function where there is a sql file (ie.
sample.sql)? I just want to mention that in my sql file there are some
comment lines (starting with --). This means that if I paste all the lines
in the sql file, I'll come up with a long string that most part of it is
commneted (after commnet sign --).
thanks
Arvin
[[alternative HTML version deleted]]
2012 Jan 23
1
Extracting data from SQL Server based on R parameters
Hi,
Can you extract data from a SQL server table based on parameters already in
R? For example I have a list of unique patient IDs with latest
hospitalisation date which I've processed in R. I need to join this data to
other tables in SQL server. The tables in SQL server are too large to import
without reducing the number of records. I do not have write access to the
SQL server.
2012 Jan 10
1
Extracting Data from SQL Server
Hi,
I am new to R (and rusty on SQL!) and I'm trying to extract records from a
SQL server database. I have a table of patient records (LoadPUS) which have
three code columns which i want to evaluate against a list of particular
codes (CVD_ICD$ table). Given the size of the patient table I want to
restrict the data I pull into R to the data I only want to analyse so I am
using SQL to do this.
2011 Oct 19
4
Using SQL "IN" with RJDBC or RMySQL
Hello,
The code below works fine up until I try to use the "IN" statement in
the last line. The proper SQL format is:
SELECT * FROM this_table WHERE this_column IN (1,2,3,4,5)
But, I think I may be getting something like:
SELECT * FROM this_table WHERE this_column IN c(1,2,3,4,5)
Which makes no sense in SQL. I think it may be just a matter of string
massaging, but I'm not
2015 Jul 13
2
Crear datos aleatorios con restriciones
Hola,
Esta pregunta la hice en stackoverflow
<http://stackoverflow.com/questions/31137940/randomly-assign-teachers-to-classrooms-imposing-restrictions/31143808#31143808>pero
nadie pudo contestarla.
1. Quiero generar N escuelas, con G grados y C divisiones.
2. Quiero asignar cada uno de T maestros a 2 divisiones en un grado y
escuela
Si tengo C=4 divisiones, puedo lograr lo que quiero con
2009 May 13
3
SQL Queries from Multiple Servers
I use RODBC as my conduit from R to SQL. It works well when the tables are
stored on one channel, e.g.,
channel <- odbcConnect("data_base_01", uid="....", dsn="....")
However, I often need to match tables across multiple databases, e.g.,
"data_base_01" and "data_base_02". However, odbcConnect() appears limited
insofar as you may only query
2012 Apr 23
2
.rda vs. .RData
Are they the same with .RData being the newer format?? Thanks,
...Tao
2013 Oct 10
1
Rcpp and mclapply
Dear all,
I have an R script that uses Rcpp, and I have been trying to parallelize
it using mclapply (I tried with the multicore and the parallel library)
Sometimes (not always, interestingly), the CPU use for each core drops,
usually so that the total over all cores reaches 100%, i.e., as fast as if
using just one single core fully. I tried my code directly from within
emacs, and also using a
2013 Oct 12
1
lmerTest
Hi,
I'm trying to user lmer function from lmerTest package because, if I
understood correectly, it allows to make better inference than lmer method
from lme4 package. However, whatever I do I keep getting this error:
Error in lme4::lFormula(formula = mark ~ ssCount + sTime+ : rank of X =
1660 < ncol(X) = 1895
any ideas what could be a problem?
thanks,
Srecko
[[alternative HTML