Displaying 20 results from an estimated 1100 matches similar to: "Bode plots in ggplot2"
2008 Apr 07
5
How to pack my stuff into a package (library, collection)?
Hello,
I am new useR, I have written some functions, which I currently use by
"source"-ing them from the files.
That's OK, but when I my functions start counting in the tens and
hundreds I'd be glad to be able to type
"help.search("my_obscure_fun")" and get a sensible reply. I also want
to be able to load them as a package at startup and not have to
2008 Mar 22
2
More elegant multiplication or division of a data frame with a vector
Hello,
I am importing some raw voltage multichannel measurements into an R
data frame. I need to scale each column with the respective
sensitivity for that channel. I figured how to do it, but I am curious
if there isn't a more elegant way.
Now I start with something like this:
rawdata <- data.frame(rbind(c(1,2,3), c(4,5,6)))
sens <- c(2,4,6)
and I do this:
data <-
2020 Oct 08
2
unable to plot bode - phase with control package
Dear All
I hope my question is relevant on this forum, else very sorry for the
disturbance
I want to simply plot a bode diagram of a siso model
using the 'bodeplot' command in the control package fail due to error in
'issiso' evaluation...
Error in if (issiso(sys)) {:
then I try by myself some retro-engineering :)
the problem is when I use
H <- freqresp(syst, w)
mag =
2020 Oct 08
0
unable to plot bode - phase with control package
a) What is so difficult about the idea that this list is about R, not theory? There do exist forums about control theory (e.g. engineering.stackexchange.com)
b) Using [-pi,+pi) is not "wrong"... it is numerically more precise, though it may not convey what you would prefer to convey.
c) The general case with poles and zeroes is more complicated than just adding the order of your
2008 Mar 24
1
How to assign multiple return values
Hi,
I am moving from MATLAB, where one can easily assign a number of
output values from a function like this:
[x,y] = myfun(a,b)
Then variables x and y can be directly used in the caller workspace.
I understand that R functions return a single argument, which could be
a list. This in a way makes it possible to return multiple values with
a single function call, but accessing the list variables
2008 Mar 25
1
Combining several mappings in ggplot2
Hello,
I want to be able to make a plot that has several series with
different color and linetype.
Online documentation suggest that this is possible, but I haven't found how:
"We can also create redundant mappings, mapping the same variable to
multiple aesthetics. This is most useful when producing a graphic for
both colour and black and white display."
Here's what I have to
2008 Mar 27
2
Rule for accessing attributes?
Hi !
I am a new user and quite confused by R-indexing.
Make a list and get the attributes
lst <- list(x = 1:3, y = 4:6, z = 7:9)
attributes(lst)
This returns:
$names
[1] "x" "y" "z"
I can easily do:
nm <-names(lst)
or
nm <-attr(lst,"names")
which both return the assigned names of the named list 'lst', but why
then this doesn't
2008 Feb 07
1
How to split a factor (unique identifier) into several others?
Hello,
I have a data frame with a factor column, which uniquely identifies
the observations in the data frame and it looks like this:
sample1_condition1_place1
sample2_condition1_place1
sample3_condition1_place1
.
.
.
sample3_condition3_place3
I want to turn it into three separate factor columns "sample",
"condition" and "place".
This is what I did so far:
#
2008 Feb 25
1
Plotting series marked with a symbol on every nth data point, preferably in ggplot...
Hello!
I am working with signals and a plot of several signals on the same
axes can get quite messy. With lines that are very fractured,
distinction by only the linestyle is not very clear. If I add symbols
to the plot however, there are so many symbols, that they overplot and
the whole plot is unreadable once again. I am looking for advice on
how to make a plot with continuous lines and symbols
2009 Nov 13
0
Package to do Bode Plots and analysis?
By any chance are there any R packages that assist in producing Bode Plots and performing Bode analysis?
Thanks again for any feedback and insights.
2008 Mar 26
2
Moving data between R and Matlab back and forth?
Hi to the list,
I am trying to find a way to painlessly move structured data back and
forth between R and Matlab (also Octave). For this purpose I found the
R.matlab package great help. I wish to use a Matlab -v6 MAT file as an
intermediary format, because it is well read by both Matlab and
Octave. It is also well read by 'readMat' function in R.matlab
package, but that is where I run
2002 Nov 18
2
Rsync and ssh with passwordless authentifikation
Is it possible to konfigure a passwordless authentifikation in kombination
with ssh.
for example:
to a specific folder on a server named server1 has only user1 access.
the user1 only exists on server1.
server2 wants to replicate a foler from server1 to himself.
the rsync process uses the rsync_user, which exists on both machines.
the rsync process asks every time the job runs for the password
2018 Sep 14
2
Bug when calling system/system2 (and request for Bugzilla account)
I hope it's not too specific in my setup...
I've tried with system2 added on the first line, so:
Example.R:
system2('ls', timeout=5)
cat('Start non-interruptable functions\n')
sample_a <- sample(1:1e7)
sample_b <- sample(1:2e7)
matching <- match(sample_a, sample_b)
cat('Finished\n')
Sys.sleep(10)
And in terminal/bash:
R --vanilla
2018 Nov 29
4
Unexpected argument-matching when some are missing
When trying out some variations with `[.data.frame` I noticed some (to me) odd behaviour, which I found out has nothing to do with `[.data.frame`, but rather with the way arguments are matched, when mixing named/unnamed and missing/non-missing arguments. Consider the following example:
myfun <- function(x,y,z) {
? print(match.call())
? cat('x=',if(missing(x)) 'missing'
2018 Oct 02
1
Relevel confusing with numeric value
Something that bit me:
The function relevel takes a factor, and a reference level to be promoted to the first place.
If ?ref? is a character this level is promoted, if it?s a numeric the ?ref?-th level is promoted.
Which turns out to be very confusing if you have factor with numeric values (e.g. when reading in a csv with some dirty numeric columns and stringsAsFactors TRUE)
For example:
2018 Sep 14
3
Bug when calling system/system2 (and request for Bugzilla account)
Hi all,
I found some strange behaviour, which I think is a bug. Could someone make an account for me on Bugzilla or pass on my report?
The problem:
When pressing Ctrl-C when a file is sourced in R, run from Terminal (macOS), sometimes the entire session is ended right away, while I just want to stop the script. This is the case when I press Ctrl-C while some functions are running that don?t
2018 Mar 22
2
Broken relocation for generating offsets?
Hello,
I append another clue I found out: The problem is definitely not caused by
"__ImageBase" the problem comes with the "OFFSET". I generated another
object file which crashed. The commonality:
mov edx, DWORD PTR ?normalPlanschbecken@@3HA ; normalPlanschbecken
lea rcx, OFFSET FLAT
:??_C at _0CC@LCMJAIPO at Reading?5?$CCnormalPlanschbecken?$CC?5?$CFi@
2018 Jul 24
2
oddity in transform
The idea is that one wants to write the line of code below
in a general way which works the same
whether you specify ix as one column or multiple columns but the naming entirely
changes when you do this and BOD[, 1] and transform(BOD, X=..., Y=...) or
other hard coding solutions still require writing multiple cases.
ix <- 1:2
transform(BOD, X = BOD[ix] * seq(6))
On Tue, Jul 24, 2018 at
2018 Nov 30
2
Unexpected argument-matching when some are missing
But the main point is where arguments are mixed together:
> debugonce(plot.default)
> plot(x=1:10, y=, 'l')
...
Browse[2]> missing(y)
[1] FALSE
Browse[2]> y
[1] "l"
Browse[2]> type
[1] "p"
I think that's what I fall over mostly: that named, empty arguments behave entirely different from omitting them (", ,")
And I definitely agree we need
2020 Jul 03
3
Get all symbols stored(?)in llvm::orc::ExecutionSession
Hey everyone,
is there a way to get the name of all symbols that are stored ("stored" is not the right term - is it?) in my current ExecutionSession?
I know by now that you can use "lookup" to get symbols, but this requires knowing those names.
Mhh... I guess that is my shortest so far question xD Thank you in advance for any help!
Kind greetings
Björn
Als GmbH eingetragen