Displaying 20 results from an estimated 5000 matches similar to: "reading PID"
2004 Mar 15
4
norm of complex number
Hi!
I want o calc the norm of a complex number ( |c| where c is complex). Does the function abs() this ?
Thanks,
--
Frank G. Zoellner
AG Angewandte Informatik
Technische Fakult"at
Universit"at Bielefeld
phone: +49(0)521-106-2951
fax: +49(0)521-106-2992
email: fzoellne at techfak.uni-bielefeld.de
2001 Feb 14
2
help with tcltk
Hallo!
Can anyone explain to me how to add a vert. scrollbar to a listbox using tcltk please?
Thanks
--
Frank Gerrit Zoellner
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2004 Mar 11
5
fft question
Hi!
I am using the fft() function the base package to transform some 1d signal.
If I use this standar fucntion I get a very huge first fourier coeficient.
I think this dues to the handling of the borders of the signal.
Usually in fft especially in image processing the signal is simulated to be continuous by adding the signal several times periodically. My question is, is there some function
2001 Feb 20
2
tcltk: testing for widgets?
Hallo!
I want to test if a widget exists. Using Perl/Tk i can call the function tkexists(). How can I realise this function with R/tclTk ?
Thanks
--
Frank Gerrit Zoellner
-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-.-
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2004 Mar 09
2
SVM unbalanced classes
Hi!
I am using R 1.8.1 and the svm of the e1071 package for classification.
The problem is that I have unbalanced classes e.g. the first one is much bigger than the second one and therfore the svm is biased to the first class.
If I manually adjust the class size the bias disappears.
The question is then how to include this unequal class distribution to the svm (e.g. via wheights or costs)?
2001 Feb 22
2
Problem with tcltk listbox
Hi!
I've got two problems with listboxes and selection:
I created a listbox, no problem. Then I bind the Button-1 of the mouse to the listbox to start some things by pressing the mousebutton. The proiblem is that as I click a item of the listbox this error occured:
Error in .Tcl(.Tcl.args(...)) : [tcl] bad listbox index "": must be active, anchor, end, @x,y, or a number.
Repaeting
2002 Jul 30
1
Problem with legend
Hi!
I have a problem using the legend command.
I typed as follows:
plot(foo bar...)
legend(0.6,10, c("True Positiv", "False Positive", "False Negative","True Negative"), col = c("black",2,3,4),lty=c(1,1,1,1),pch=c(0,0,0,0), merge = TRUE, bg='gray90')
The plot and its legend is displayed ok. The I apply a dev.cop2eps on it to save the
2001 Feb 12
2
RODBC and connection parameters
Hi!
I'm using the RODBC packages for connecting R and a mysql database.
To do this, i use the function odbcConnect(dsn,uid,pwd).
Is it possible to read the connection paramters from the odbc.ini file within R?
+Especially I'm interested in uid/pwd parameters because of security reasons.
Thanks
--
Frank Gerrit Zoellner
2001 Mar 07
2
help with dev.copy2eps
HI!
I'm using the function dev.copy2eps to store a plot into a file.
How can I change the default name of the file and the path where the file
should be created ?
Thanks
--
Frank Gerrit Zoellner
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2001 Mar 26
1
Plotting with more than one y axis
Hi!
I want to combine two plots. On the one hand i've got a histogram and on the other hand a line plot. The y axis of the plot are different and i want both axis (one on the right side the other on the left side) in the plot. How can I do this in R ?
Thanks
--
Frank Gerrit Zoellner
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2001 May 31
1
substitute values in a vector,dataframe
Hi!
I've got a dataframe with -Inf values inside and i want to substitute them with 0. The dataframe is only one column. How can I do this in R?
Thanks
--
Frank Gerrit Zoellner
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r-help mailing list -- Read http://www.ci.tuwien.ac.at/~hornik/R/R-FAQ.html
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2004 Mar 11
5
Receiver Operator Characteristic curve
Dear R-helpers:
I want to calculate area under a Receiver Operator Characteristic curve. Where can I find related functions?
Thank you in advance
Xiao
2001 Nov 22
6
Editing R graphics
One of the few things that I miss from Splus is
the ability of interactively add text and symbols to graphics
that have been created by functions. I understand that the best
solution in R is to create a graphic file and use external
software for editing the graphic. I know what to use in the
Win environment, but could anyone suggest what tools would
be appropriate under Linux?
Thanks
Agus
Dr.
2018 Apr 18
0
Problem with regression line
Hi, Anne,
assign Age and Bloodpressure in the correct order
to the axes in your call to plot as in:
plot(y = Age, x = BloodPressure)
abline(SimpleLinearReg1)
Hth -- Gerrit
---------------------------------------------------------------------
Dr. Gerrit Eichner Mathematical Institute, Room 212
gerrit.eichner at math.uni-giessen.de Justus-Liebig-University Giessen
Tel:
2013 Jul 09
1
Puppet code review - suggestions and options
We are looking to implement a code review system that will require a review
of the code before it gets to production servers. I have been looking into
many different options, and would love some feedback and experiences from
other users.
Our puppet is in a git repo. We have 3 primary environments with a branch
of puppet for each of them. All of our puppet info is in the git repo
2018 Jan 17
0
effects & lme4: error since original data frame notfoundWASeffects: error when original data frame is missing
Dear Gerrit,
This issue is discussed in a vignette in the car package (both for functions in the car and effects packages): vignette("embedding", package="car") . The solution suggested there is the essentially the one that you used.
I hope this helps,
John
-----------------------------
John Fox, Professor Emeritus
McMaster University
Hamilton, Ontario, Canada
Web:
2018 Jan 17
0
effects & lme4: error since original data frame not found WASeffects: error when original data frame is missing
Hi, again,
I have to modify my query since my first (too simple)
example doesn't reflect my actual problem. Second try:
When asking Effect() inside a function to compute an effect
of an lmer-fit which uses a data frame local to the body of
the function, as in the following example (simplifying my
actual application), I get the "Error in is.data.frame(data) :
object 'X' not
2018 Mar 28
1
Re: Change in ovirt-imageio[master]: Document the random I/O APIs
Hi Richard,
We've added zero and flush functionality to imageio-daemon.
You can download and test the latest build (for el7/fc) from:
-
http://jenkins.ovirt.org/job/ovirt-imageio_master_build-artifacts-el7-x86_64/200/artifact/exported-artifacts/
-
http://jenkins.ovirt.org/job/ovirt-imageio_master_build-artifacts-fc27-x86_64/53/artifact/exported-artifacts/
-
2008 May 08
1
Reading multiple tables from file
Dear R-users,
I have output files having a variable number of tables
in the following format:
-------------
1
Pietje
I1 I2 Value
1 1 0.11
1 2 0.12
2 1 0.21
2
Jantje
I1 I2 I3 Value
1 1 1 0.111
3 3 3 0.333
...
-------------
Would there be an easy way
of turning this into (a list of) data.frames
with names Pietje, Jantje
and variables I1,I2,...Value?
(I1,I2 are string or categorical,
2018 Jan 09
1
barplot_add=TRUE
Dear Gerrit
Thanks a lot. "rbind" seems to be the right function. Unfortunately there is a shift in the x-axis (see pdf). There are 52 trapcatch values each, m and w, but m$trapcatch and w$trapcatch are shifted up to x-value 60.
The follow-up lines for temp and humidity are fine.
Thanks
Sibylle
setwd("~/Desktop/DatenLogger2017") # am Mac sks
trap =