Displaying 20 results from an estimated 1000 matches similar to: "Percentiles with R for a big data.frame"
2013 Jan 05
5
Need help on dataframe
Dear R users, I came up to a problem by taking means (or other summary
statistics) of a big dataframe.
Suppose we do have a dataframe:
ID V1 V2 V3 V4 ........................ V71
1 6 5 3 2 ........................ 3
2 3 2 2 1 ........................ 1
3 6 5 3 2 ........................ 3
4 12 15 3 2 ........................ 100
2012 Dec 17
7
split character line into rows
Hey R users,
suppose we have data:
[1] 2010.12.26 00:00:52 688,88 11,69 43,00
[2] 11,69 43,00
[3] 11,69 43,00
[4] 11,69 43,00
[5] 11,69 43,00
[6] 11,69 43,00
[7] 11,69 43,00
[8] 11,69 43,00
[9] 11,69 43,00
[10] 11,69 43,00
[11] 11,69 43,00
[12] 11,69 43,00
[13] 11,69 43,00
[14] 11,69 43,00
[15] 11,69
2013 Jan 15
2
Need help: R for repetitive tasks
Dear R users,
First of all I would like to thank all of you who replayed to my previous
questions and problems. Thank you a lot for being great and helpful
community. I highly appreciate your suggestions and ideas even if I do not
respond after my question! But it means that your help was exactly what I
needed. Thank you again!
Now the following question I need help:
Suppose I do have a
2013 Jan 05
3
Need help with time series data
Dear R users,
Could you share your knowledge on following problem:
Suppose we have dataframe:
ID TIME Data1 Data2 Data3
........... Data700
1. 2013-01-01 00:00:00 34 53 66
............ 55
2. 2013-01-01 00:00:01 333 4 5
............ 50
3. 2013-01-01 00:00:02 and so
2016 Jan 26
2
Corregir mismo ID para individuos diferentes en una serie temporal
Hola,
Please, mira si esta vez funciona:
#----------------------------------------------
ID <- c(1, 2, 3, 4, 5, 6, 7, 1, 2, 3, 8, 9, 10, 11, 12, 1, 2, 3, 4, 5, 6,
1, 2, 6, 8, 12, 7, 15, 16, 17, 18, 19, 20, 1, 21, 22, 19 )
Year <- c (1, 1, 1, 1, 1, 1, 1, 2, 2, 2, 2, 2, 2, 2, 2, 3, 3, 3, 3, 3, 3,
4, 4, 4, 4, 4, 5, 5, 5, 5, 5, 5, 5, 5, 6, 6, 6)
df <- data.frame (ID, Year)
df
ID <- c(1,
2016 Jan 26
2
Corregir mismo ID para individuos diferentes en una serie temporal
Hola,
Antes de nada, muchas gracias por tu ayuda.
El código se ha acercado bastante, pero no termina de funcionar porque considera cada captura de un individuo como años consecutivos aunque haya pasado más tiempo entre ellos.
Por ejemplo el individuo 4 es capturado por primera vez el año 1 y por segunda vez el año 3, por lo que debería de ser renombrado ya que en este ejemplo en concreto
2005 Jan 07
2
Getting empirical percentiles for data
Dear List,
I have some discrete data and want to calculate the percentiles and the
percentile ranks for each of the unique scores. I can calculate the
percentiles with quantile().
I know that "ecdf" can be used to calculate the empirical cumulative
distribution. However, I don't know how to exact the cumulative
probabilities for each unique element. The requirement is similar
2010 Feb 26
2
Problem accessing sub-methods of functions stored in a vector
Hi folks,
I am having trouble accessing sub-functions when the main function is
stored in an array. For example, the following test code works fine:
fcns = c(abs, sqrt)
fcns[[1]](-2)
fcns[[2]](2)
However, when I try to access sub-functions declared within list() in a
function, this only works directly. When I try to access these within an
array only the first declared sub-function is run.
2011 Mar 10
1
getting percentiles by factor
Hello,
I'm trying to get percentiles (PERCENTRANK for excel users) by factor in the
following data.frame:
myExample <- data.frame(Ret=seq(-2, 2.5,
by=0.5),PE=seq(10,19),Sectors=rep(c("Financial","Industrial"),5))
myExample <- na.omit(myExample)
Thanks to Patrick I I managed to put together the following lines which does
it for the "Ret" column:
myecdf
2009 Feb 17
6
Percentiles/Quantiles with Weighting
Hi All,
I am looking at applications of percentiles to time sequenced data. I had
just been using the quantile function to get percentiles over various
periods, but am more interested in if there is an accepted (and/or
R-implemented) method to apply weighting to the data so as to weigh recent
data more heavily.
I wrote the following function, but it seems quite inefficient, and not
really very
2016 Jan 25
4
Corregir mismo ID para individuos diferentes en una serie temporal
Hola a todos,
Quería preguntar si alguno sabe como puedo identificar registros con un mismo ID en el tiempo, pero que hacer referencia a objetos o individuos diferentes.
En mi caso en particular estoy estudiando un animal que tiene una vida media cercana 2 años, y tengo una serie longitudinal de 25 años. El problema es que durante el muestreo en algunos casos durante la recoleccion de los datos,
2012 Jul 30
3
Calculating percentiles for multiple dates
I was hoping to calculate the percentile for each date. So group all of one
date together, calculating the value of the 2.5 and 97.5 percentile.
--
View this message in context: http://r.789695.n4.nabble.com/Calculating-percentiles-for-multiple-dates-tp4638183p4638378.html
Sent from the R help mailing list archive at Nabble.com.
2013 Jun 14
0
Problem with Get_map getting maps without country name
Dear R users,
I use: mapImageData<- get_map(source="google", c(lon=21, lat=57), zoom=6,
maptype="terrain")
to get ggmapTemp.png file in the directory. The problem is - some city and
park names overlay with my data points I want to plot on this map. Is there
a way to get the map without city, country and park names? I get this
using maptype="satellite", but I
2004 Apr 26
2
Looking for help in calculating percentiles
Hi All:
I am working with a dataset on Arsenic toxicity, and I am trying to
calculate the 20th, 40th, 60th, 80th, and highest percentiles for a
variable, dietary Moisture (variable name dMoist).
The inbuilt function quantile(dMoist) would print 0, 25th, 50th, 75th, and
100th percentile. Does there exist a function that can calculate xth
percentile (where x = 10th, 20th, ... etc) values?
2012 Apr 20
1
Package "demography" - calculating percentiles of survival probabilities distribution
Hi,
I am using the package "demography" from Rob Hyndman for the
Lee-Carter-Model. It is an amazing powerful tool but I am struggling with
one issue:
I want to compute different percentiles of the survival probability
distribution derived from the Lee-Carter-Forecast (e.g. the 50%tile,
60%tile, 75%tile and 99%tile) for each of the next 10 years. Is there any
possibility to retrieve
2007 Sep 11
5
Percentiles in R
Hi there! Still struggling to translate Matlab code into R's tsDyn package.
Here is my question: Is there in R an equivalent function to Matlab's
prctile()? To the moment I thought it was quantile(), but I just
realized I was wrong. The definition of the Matlab function:
prctile
Percentiles of a sample
SyntaxY = prctile(X,p)
Description
Y = prctile(X,p) calculates a value that is
2018 May 29
4
Scripting the next UID/GID number to use
On Tue, 2018-05-29 at 21:00 +0100, Rowland Penny via samba wrote:
> On Tue, 29 May 2018 15:50:44 -0400
> lingpanda101 via samba <samba at lists.samba.org> wrote:
>
> > Hello,
> >
> > I'm developing a script to create a user and pass along all the
> > necessary unix attributes required. I'm successful except when I go
> > to increment
2013 Apr 22
7
Multiple lon lat points in the map with ggplot2
Hello R users,
For the last few days I am struggling with the following task:
my data.frame:
A1 A2 A3 B1 B2
B3
58.81 53.292 54.501 13.013 17.39 19.407 56.02 56.251 54.033 20.099 13.15
10.411 55.376 53.099 57.625 13.396 21.031 13.22 58.584 53.194 54.218
13.038 16.854 19.289 55.7 55.921 53.847 19.942 13.153 9.828 55.093 52.934
2011 Apr 17
3
Box plot with 5th and 95th percentiles instead of 1.5 * IQR: problems implementing an existing solution...
Hi all,
I'm just getting started with R and I would appreciate some help. I'm having
trouble creating a boxplot with whiskers at the 95th and 5th percentiles
instead of at 1.5 * IQR. I have read the relevant documentation, and checked
existing mails on this topic. I found a small modification that should work
: https://stat.ethz.ch/pipermail/r-help/2001-November/016817.html and tried
to
2012 Mar 16
1
help to split a ID column in a data.frame and create a new ID column
Dear Researchers,
I have a data.frame with 2 columns like this:
mydf <-
data.frame(value=c(1,2,3,4,5),ID=c("Area_1","Area_2","Area_3","Area_4","Area_5"))
> mydf
value ID
1 1 Area_1
2 2 Area_2
3 3 Area_3
4 4 Area_4
5 5 Area_5
I need to convert the *ID *in the following version
> mydf
value ID newID