Displaying 20 results from an estimated 6000 matches similar to: "log returns (was: Re: help with table partition)"
2006 Jun 15
4
help with table partition
Hi,
I have a test_table where the dim is 62220 by 73 (row by col)
I would like to partition the rows into 170 equal parts (170 tables
where each is of dim 366 by 73), and rearrange them horizontally. The
source codes I have:
for (i in 1:170) {
c = cbind(c,test_table[(367*i+1):(367*(i+1)),2:73]);
}
Unfortunately, using for loop and cbind for a table of this size
2017 Oct 13
0
How to define proper breaks in RFM analysis
Hemant's problem is that the indicators are not distributed uniformly.
With a uniform distribution, categorization gives a reasonably optimal
separation of cases. One approach would be to drop categorization and
calculate the overall score as the mean of the standardized indicator
scores. Whether this is an option I do not know. I did offer an
"eyeball" set of breaks in a previous
2017 Oct 23
1
How to define proper breaks in RFM analysis
hello,
I'm confused what you guys are talking about.
i just want to set ideal threshold values for my RFM scores which can be
done using Quantiles but i don't want to use quantiles because my data is
not normally distributed so it will lead to wrong ranges of breaks. to fix
this problem I'm looking for an approach which can define the ideal range
to breaks to categorize RFM scores into
2017 Oct 13
2
How to define proper breaks in RFM analysis
> On Oct 13, 2017, at 2:51 AM, PIKAL Petr <petr.pikal at precheza.cz> wrote:
>
> Hi
>
> You expect us to solve your problem but you ignore advice already recieved.
>
> Your data are unreadable, use dput(yourdata) instead. see ?dput
>
>> test<-read.table("clipboard", heade=T)
> Error in scan(file = file, what = what, sep = sep, quote = quote,
2006 Feb 07
1
(second round) creating a certain type of matrix
Hi R users
Here is what I got with help from Petr Pikal (Thanks Petr Pikal). I modified
Petr Pikal's code to a little
to meet my purpose.
I created a function to generate a matrix
generate.matrix<-function(n.variable)
{
mat<-matrix(0,n.variable,(n.variable/2)/5+1) #matrix of zeroes
dd<-dim(mat) # actual dimensions
mat[1:(dd[1]/2),1]<-1 #put 1 in first half of first column
2018 Feb 13
0
plotting the regression coefficients
Hi
scale_colour_gradient(?red?, ?blue?)
should do the trick.
Actually I found it by Google
ggplot colour
http://www.cookbook-r.com/Graphs/Colors_(ggplot2)/
http://www.sthda.com/english/wiki/ggplot2-colors-how-to-change-colors-automatically-and-manually#gradient-colors-for-scatter-plots
question. So you could find it too and probably far more quickly then myself as I have also other duties.
Cheers
2006 Sep 18
0
Question on apply() with more information...
>From: =?ISO646-US?Q?Gunther_H=3Fning?= <gunther.hoening at ukmainz.de>
>Date: 2006/09/18 Mon AM 06:26:25 CDT
>To: 'Petr Pikal' <petr.pikal at precheza.cz>
>Cc: r-help at stat.math.ethz.ch
>Subject: Re: [R] Question on apply() with more information...
I think you want something like below but it
probably needs some fixing up because i don't recall
the syntax
2007 Oct 01
0
Clustering literature was Re: nonlinear regression
Hi
It is preferable to echo your posts to r-help, you usually get more
answers and some definitelly superb to mine.
It is also better to start a new mail if your question has nothing to do
with original subject
"Maura E Monville" <maura.monville at gmail.com> napsal dne 01.10.2007
17:44:43:
> Unluckily I do not have the privilege of practising with R all day
> long. I
2017 Oct 13
0
How to define proper breaks in RFM analysis
Hi
You expect us to solve your problem but you ignore advice already recieved.
Your data are unreadable, use dput(yourdata) instead. see ?dput
> test<-read.table("clipboard", heade=T)
Error in scan(file = file, what = what, sep = sep, quote = quote, dec = dec, :
line 115 did not have 6 elements
What is ?ideal interval? can you define it? Should it be such to provide eqal
2006 Aug 08
0
(Fwd) Re: paired t-test. Need to rearrange data?
------- Forwarded message follows -------
From: Petr Pikal <petr.pikal at precheza.cz>
To: Henrik Parn <henrik.parn at bio.ntnu.no>
Subject: Re: [R] paired t-test. Need to rearrange data?
Date sent: Tue, 08 Aug 2006 16:13:47 +0200
Hi
Uff, it takes me a bit headache but this shall do it
?unstack
?table
?t
new.list<-unstack(test.data,y~id)
2017 Jul 28
0
FW: Fail to install package in R
CC to R-help
From: PIKAL Petr
Sent: Friday, July 28, 2017 2:20 PM
To: 'li xiaomei' <lixiaomei0921 at gmail.com>
Cc: r-help at r-project.org
Subject: RE: [R] Fail to install package in R
Hi
You should keep conversation within the list, others could bring better answers.
I still do not see any error message. I found this answer to seemingly same question.
2018 Feb 12
0
plotting the regression coefficients
Petr, there was a thinko in your response.
tmp <- data.frame(m=factor(letters[1:4]), n=1:4)
tmp
tmp$m <- factor(tmp$m, levels=c("c","b","a","d")) ## right
tmp[order(tmp$m),]
tmp <- data.frame(m=factor(letters[1:4]), n=1:4)
levels(tmp$m) <- c("c","b","a","d") ## wrong
tmp[order(tmp$m),]
changing levels
2004 Oct 08
0
library in R2.0.0 - summary
Thanks to Andy Liaw and prof.Ripley for their comments.
I finally managed my function set work without need for proper
installation. However I must try it sometimes.
I got tools from
http://www.murdoch-sutherland.com/Rtools/tools.zip
but I did not install Pearl yet. I tried
make pkg-fun
which resulted in sequence of errors which I corrected according
what I was told by screen and
2018 Feb 12
2
plotting the regression coefficients
Hi Petr and Richard;
Thanks for your responses and supports. I just faced a different problem.
I have the following R codes and work well.
p <- ggplot(a, aes(x=Phenotypes, y=Metabolites, size=abs(Beta),
colour=factor(sign(Beta)))) +
theme(axis.text=element_text(size = 5))
p1<-p+geom_point()
p2<-p1+theme(panel.grid.major = element_blank(),
panel.grid.minor = element_blank(),
2020 Oct 26
0
How to shade area between lines in ggplot2
Hi
Put fill outside aes
p+geom_ribbon(aes(ymin = slope_1*x + intercept_1 - 1/w[2],
ymax = slope_1*x + intercept_1 + 1/w[2]), fill = "blue", alpha=0.1)
The "hole" is because you have two levels of data (red and blue). To get rid
of this you should put new data in ribbon call.
Something like
newdat <- trainset
newdat$z <- factor(0)
p+geom_ribbon(data=newdat, aes(ymin =
2006 Apr 05
1
(Fwd) Re: Reading xyz data from a file and plotting a cont
BTW. I checked help page of contour and maybe it could mention a note
about akima package or interp function.
Petr
------- Forwarded message follows -------
From: Petr Pikal <petr.pikal at precheza.cz>
To: "Abhinav Verma" <abhinav1205 at gmail.com>, r-help at stat.math.ethz.ch
Subject: Re: [R] Reading xyz data from a file and plotting a
2017 Oct 11
0
"Time Series Plotting"
Hi
keep your emails to R help, I do not offer private consultance and others could have different opinion how to solve your problem.
Did you even try my suggestion? If not, why not? If yes in what respect it does not comply with your expectations.
Cheers
Petr
From: niharika singhal [mailto:niharikasinghal1990 at gmail.com]
Sent: Tuesday, October 10, 2017 2:34 PM
To: PIKAL Petr <petr.pikal at
2018 Feb 19
0
Putting 733 discrete categories on Y-axis in qqplot2 as they are
Hi
When you load external file to R, character variables are converted to factors by default and alphabetically sorted. I have limited connection to internet, so I cannot find the answer, you could try it yourself. Maybe you could try not to convert vector with names to factor, which, for plotting issue is not different from factor coding.
See ?read.table for details
However I am not sure if it
2016 Apr 05
0
use one way ANOVA to select genes
Hi
Others can have better insight in your question so i tis preferable to post your mails to the Rhelp list too.
I hope your datafile is all numeric. If not after t(datafile) can be character.
AFAIK your pvalue is not propagated to aov function.
Based on artificial data your construction arrives to result, which in this case tells you that there is almost no difference in those 5 groups..
m
2011 Jan 07
0
Odp: Currency return calculations
My mistake sir. I was literally engrossed in my stupid logic, and while doing so, overlooked the simple and very effective solution you had offered. Sorry once again sir and will certainly try to be very careful in future.
Thanks again and have a great weekend sir.
Regards
Amelia
--- On Fri, 7/1/11, Petr PIKAL <petr.pikal@precheza.cz> wrote:
From: Petr PIKAL