Displaying 20 results from an estimated 3000 matches similar to: "qcc package"
2008 Sep 02
2
qcc help
Hi Gents,
I need to get the control limits from qcc function.
As follows:
qcc(MDI, type = "xbar.one")
Call:
qcc(data = MDI, type = "xbar.one")
xbar.one chart for MDI
Summary of group statistics:
Min. 1st Qu. Median Mean 3rd Qu. Max.
0.3266 0.4249 0.4371 0.4333 0.4451 0.4858
Group sample size: 1
Number of groups: 383
Center
2005 Feb 04
1
QCC and PlotMath question
For some reason, using the qcc package, I'm unable to use the plotmath
notation in the title. Can anyone see what I'm doing wrong?
library(qcc)
a <- rnorm(100)
qcc(a,type="xbar.one",title=expression(bar(X)),ylab=expression(CFU/ft^3)
)
This seems to not let the expression be evaluated, so I tried:
2017 Jul 08
2
CRAN I-MR / Xbar-R / Xbar-S control chart package ?
Hi,
I've had a quick look through the package list, and unless I've missed
something, I can't seem to find anything that will do I-MR / Xbar-R /
Xbar-S control charts ?
Assuming there is something out there, can anyone point me in the
right direction ?
Thanks !
TIm
2008 Sep 13
1
QCC - Change Background Color and Remove X Axis Text
Hi,
I am working with QCC and would like help with the following:
a) Change the color of the background. I tried bg="#FFFFFF" in par and also
in qcc and it did not work.
b) I want to remove the X Axis Text (i.e. 1, 2, 3 ... n) -- but xaxt="n"
does not work in qcc.
Thanks
--
View this message in context:
2017 Jul 08
0
CRAN I-MR / Xbar-R / Xbar-S control chart package ?
Hello,
I have no experience with I-MR charts but a google search found package
qcc. Maybe it's what you're looking for.
Hope this helps,
Rui Barradas
Em 08-07-2017 09:07, Tim Smith escreveu:
> Hi,
>
> I've had a quick look through the package list, and unless I've missed
> something, I can't seem to find anything that will do I-MR / Xbar-R /
> Xbar-S control
2005 Nov 29
2
qcc
violating.runs
I read from the news
cran.r-project.org/doc/Rnews/Rnews_2004-1.pdf
that the criteria for the violating is 5 but
1)I cannot find "5" in the code of the function. Where is the "5" ?
2)What is the easiest way to change it ?
3)Is there any more criterias made somewhere ?
Yours sincerelly, Tommi Viitanen
2010 Jan 13
1
plotting moving range control chart
I have been having the same problem as poster Hodgess, below. It appears
that her question was never answered, so I would like to share a solution
with the community.
The problem is the (apparent?) inability to produce moving range process
behavior (a.k.a. "control") charts with individuals data in the package
"qcc" (v. 2.0). I have also struggled with the same limitation in
2009 May 01
1
Problem with qcc
Hi All,
Already searched the net for a solution, but couldn't find one.
The piston ring example works fine on my XP laptop and R installation.
However, using the dataset enclosed (I've also enclosed the script file
used) only type="S" works and both "R" and "xbar" don't. Entering ylim works
better but still control limits are not calculated.
2009 Aug 13
0
Limited number of replicates in qcc()?
Dear R-users,
I'm encoutering some problems with the qcc()-function. When there are
more than 25 replicates per "sample" the estimate for the standard
deviation becomes NA, implying that nothing is plotted (error message:
"Error in plot.window(...) : need finite 'ylim' values")
On the forum I found a way to work around the error message, but this
does not
2010 Aug 20
0
plotting moving range control chart with qcc. . .
This regards an old post that posed the question:
Tom Hodgess wrote:
"The problem is the (apparent?) inability to produce moving range
process behavior (a.k.a. "control") charts with individuals data in the
package "qcc" (v. 2.0). I have also struggled with the same limitation
in package "IQCC" (v. 1.0).
The package "qAnalyst" (v. 0.6.0) provides an
2010 Feb 04
6
problems with SPC charts in R
Hi all,
I am using SPC techniques of plotting Xbar, R, S, P and C charts in R.For
this I am using qcc package in R and also using the following document for
reference.
http://www.stat.unipg.it/~luca/Rnews_2004-1-pag11-17.pdf
But while plotting S chart, R chartchart and also C chart I am getting
following errors.
I have plotted the Xbar chart successfully using following command
obj <-
2018 Jan 29
2
Add ablines
Good morning,
I have some problem adding ablines in Rstudio.
The lines drew by the software doesen?t match with the added values, what can I do?
pfaOK<-qcc(D[!trial], sizes=size[!trial], type="p", nsigmas=2, data.name="Polli positivi al Campylobacter")
pfaOK1<-qcc(D[!trial], sizes=size[!trial], type="p", data.name="Polli positivi al Campylobacter")
2007 Dec 03
1
help on qcc
Hello R Experts,
I started to work with the qcc package and it wprks quite nicely.
Heres My Code:
n <-
c(55,5,94,25,10,15,15,40,44,34,90,114,204,37,30,28,12,68,64,29,24,14,31,16,62,45,55,20,24,14,9,19,76,57,55,42,6,
54,32,117,19,32,9,11,13,31,27,33,44,28)
x <- c(6,0,30,5,2,1,4,5,2,9,12,24,64,3,9,21,9,48,15,4,3,0,1,0,6,
7,2,0,3,2,0,5,1,2,6,9,1,6,2,0,1,4,8,0,1,1,3,0,0,0)
2019 Aug 20
2
qcc con par
Hola colegas, por favor si me indican que estoy haciendo mal.
Estoy tratando de usar el paquete QCC y colocar mas de gráfico de control
en una sola ventana usando función "par" con "qcc" para presentar varios
gráficos en la misma ventana.
He probado pero no funciona, solo muestra un gráfico miren el código
# set unequal sample sizes
n <- c(rep(50,5), rep(100,5), rep(25, 5))
2011 Oct 14
3
qcc package
Hi All,
I installed qcc package and the dependency packages. For the first time I can use the function : process.capability.sixpack(). But later when ran the code again I always got the following error: Error: could not find function "process.capability.sixpack". I tried reinstalling the qcc package but didn't help. Does anyone have this kind of experience? Thank you!
Regards,
Yan
2007 Jan 26
1
plotting results from tapply
Hi, there
I'm trying to plot what is returned from a call to tapply, and can't figure
out how to do it. My guess is that it has something to do with the
inclusion of row names when you ask for the values you're interested in,
but if anyone has any ideas on how to get it to work, that would be
stellar. Here's some example code:
y1<-rnorm(40, 2)
x1<-rep(1:2, each=20)
2003 Jul 22
4
greek in main title
Hello,
I have written a function that demonstrates the CLT by
generating samples following the exponential distribution,
calculating the means, plotting the histogram, and drawing
the limiting normal curve as an overlay. I have the title
of each histogram state the sample size and rate (1/theta)
for the exponential (the output is actually 4 histograms),
but I can't get the greek letter theta
2008 Oct 05
1
Sample mean in R
I am having issues with the following:
(muhat = 1/n^2(sum of all the xi's) )
essentially if xbar = the sample mean, muhat = sample mean but square the n.
Question:
Use R to run a Monte Carlo simulation which compares the finite-sample
performance of xbar and muhat. Specifically generate 1000 samples n=30 from
a standard normal distribution. For each sample calculate xbar and muhat. I
have
2007 Jul 25
3
Constructing bar charts with standard error bars
I am new to R.
I want to graph group data using a "Traditional Bar Chart with Standard
Error Bar", like the kind shown here:
http://samiam.colorado.edu/~mcclella/ftep/twoGroups/twoGroupGraphs.html
Is there a simple way to do this?
So far, I have only figured out how to plot the bars using barplot.
testdata <- scan(, list(group=0,xbar=0,se=0))
400 0.36038 0.02154
200 0.35927
2004 Jul 26
1
qcc package & syndromic surveillance (multivar CUSUM?)
Dear R Community:
I am working on a public health early warning system, and
I see that the qcc package allows for CUSUM and other statistical quality tests
but I am not sure if my project is a good match for qcc functions as written.
Any advice you may have is very much appreciated.
I have four years worth of daily counts of emergency room admissions for
different conditions (e.g. respiratory,