Displaying 20 results from an estimated 4000 matches similar to: "Interpolation of data"
2008 Jul 10
3
specifying data
Hello,
I have to merge several serie by "date". I used:
cb<-merge(cbds,cbbond,by=c("date"),all=T).
I have the daily and the high frequency data.
Unfortunately, the programm did not sort by "sort"
my data in a chronological manner.
Is there any possibility to do this in R?.
Thanks in advance,
Silke
2006 Oct 15
2
overlapping intervals
Hello everybody,
I have two series of intervals, and I'd like to output the shared
regions.
For example:
series1<-cbind(Start=c(10,21,40,300),End=c(20,26,70,350))
series2<-cbind(Start=c(25,60,210,500),End=c(40,100,400,1000))
> series1
Start End
[1,] 10 20
[2,] 21 26
[3,] 40 70
[4,] 300 350
> series2
Start End
[1,] 25 40
[2,] 60 100
[3,]
2012 Feb 28
2
ts.plot and x axes customization
Dear List,
I would be pleased if someone can help me with the following issue:
I'm about to plot two time series in one plot via ts.plot which looks like:
ts.plot(series1, series2, main=main, xlab=xlab, ylab=ylab, col=c("green",
"red", "blue"), lwd=2)
The problem is, that R automatically sets the x axes labels in
5-year-intervalls. Every
2008 May 03
2
Stacked bar plot anomaly When column contains a negative and a positive value
Hello users,
I've noticed a problem when creating a stacked column plot when a column
contains a negative and a positive value. e.g.
series1<-c(-1,-2, 3, 4, 5)
series2<-c( 5, -4,-3,-2, 1)
data<-rbind(series1,series2)
barplot(as.matrix(data), beside=FALSE)
In these cases (i.e. first, third and fifth columns) the plotting is not
handled correctly. Compare this output with that
2010 Jul 28
2
Axes=F and plotting dual y axes
Howdy. Been running into a bit of trouble with plotting. Seems that
axes=F is not "working". Whenever I plot (either a dataframe or xts/zoo
series) and I set axes=F along with xlab/ylab="" I still get the default
axes printed in my chart. Consider this:
#Create some sample data, both 50 units of blah
series2 = c(1:50)
series1 = rep(25:74)
testdf1 = as.data.frame(series1)
2010 Jan 27
1
How to sort data.frame
Dear R heleprs
Suppose I have following data
Scenarios
combination_names
series1
series2
Sc1
MAT2 GAU1
7.26554
8.409778
Sc2
MAT2 GAU2
7.438128
8.130275
Sc3
MAT3 GAU1
8.058422
8.06457
Sc4
MAT1 GAU2
8.179855
8.022071
Sc5
MAT3 GAU2
8.184033
8.191831
Sc6
MAT3 GAU2
7.50312
8.232425
Sc7
MAT1 GAU2
7.603291
8.200993
Sc8
MAT1 GAU1
8.221755
8.380097
Sc9
MAT3 GAU2
7.904908
2006 Jun 20
1
weird application of apply again
uugh : i promise that this will be my last question of the day.
i hate to constantly bother this group but it takes me time to get familar with all of these functions, tricks and and manipulations.
i appreciate everyone's patience. i used too splus a lot
but i've gotten rusty.
i have a matrix of say 200 rows and 600 columns.
i have a function "getprofit" that takes two series
2009 Aug 13
1
ncdf
Dear all,
working with R under Linux, I am not able to install the ncdf-package.
The following appears:
install.packages("ncdf")
Warnung in install.packages("ncdf") :
argument 'lib' is missing: using
'/user/silke/R/x86_64-unknown-linux-gnu-library/2.6'
--- Please select a CRAN mirror for use in this session ---
Loading Tcl/Tk interface ... done
versuche URL
2005 Oct 19
1
Plotting more than one series on the same graph
I'm new to R and have searched for help and consulted the the pdf
manuals, but I can't seem to figure out how to plot more than one
series on the same graph.
I've tried using multiple par(new=TRUE) statements such as
>plot(series1, ci.type="line", col="red", lwd=2, ci.lty=0, ci.col="red")
>par(new=TRUE)
>plot(series2, ci.type="line",
2004 Apr 29
1
accessing information in lists
I've created a dataframe containing multiple ACF lists through the command
rev.acf<-apply(rev.matrix, 2, acf, na.action=na.contiguous, lag.max=12, plot=FALSE)
where rev.matrix is an n by t matrix containing n time series in columns. I'd now like to pull out only the ACF information and store it in a seperate n by 12 matrix. So far the only way I can work out to access this is
2006 Mar 17
1
How to change the label in plot.ts ?
Hi you guys:
I have been wondering if there is any way to change the labeling in plot.ts( ), for example , if I plot two sequences,
i always got y labels as "series1", "series2", I tried to use ylab=c((expression(mu_1)),(expression(mu_2))), but it
doesn't work.
thanks in advance for any help
best.
2008 May 29
1
akima interpolation and triangulation question
Dear all;
First of all, this is probably a more conceptual question than a
R-related one, but still want to give it a try. When working with the
interpolation function "interp" from the package akima and the
triangulation function "tri.mesh" from package tripack I've got NA's
for the interpolation and "error" for the triangulation. The data is
arranged in a
2011 Jul 07
0
Seasonal correlations
I am an R newbie, and I am facing what is for me a challenging problem. I am trying to write functions to solve the following problems. It seems as though R offers so many options I am not sure how to approach the problem.
I have a data frame with dates in the first column and returns in the remaining columns. I would like to give a user a variety of options.
I designate Series1 as the
2003 Sep 21
3
Z aware interpolation
Hello again,
There is any package which does Z aware (real 3D) interpolations?
It can be any method (IDW, kriging or spline) but it should take into
consideration not only x and y coordinates for interpolation, but
also z coordinate. I looked into different packages but it seems i
didn't find the right one.
The ultimate goal is to import the output into a GIS (Geographical
Information
2002 Nov 04
2
interpolation
Hello,
I have 15 data points (weight at birth) by age which I want to interpolate back
in time (to 5 more age points).
There are many functions in R to do this and I wonder if anyone has experience
in using these -- any preference/caveat etc? I am trying to find an alternative
to linear interpolation.
Using R 1.6.0 under windows
TIA Marwan
2003 Oct 16
2
Interpolation of azimuth values
Hello
I will make an interpolation of data which represents azimuth direction
( angle from north in clockwise direction) values.
But there is a problem.
Say, for instance, while 1 and 359 indicate somewhat same direction,
interpolation puts values
in the range from 1 to 359. What can I do to solve the problem ?
Anything you offer ?
thanks in advance
Ahmet Temiz
General Directory of
2006 Mar 31
6
string interpolation - #{} vs. single vs. double quotes
Could someone point me to documentation that provides a succinct and accurate description of the difference between interpolation using #{}, single quotes, and double quotes ?
I imagine there''s a set of precedence rules that govern behavior if/when they''re mixed. I''d like to get clear on this.
Thanks,
Bill
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2005 Aug 05
4
interpolation function
Hi,
I have a sparse matrix.I want to fill values into the entries whose value
is 0.The new generated values should come from the interpolation of the
values have existed.Does R provide such interpolation functions which
operate on Matrix, for example ,such a matrix below
0 0 0 0 2.3 0 0 0 0
0 0 3.1 0 0 0 0 1.4 0
0 0 0 0 0 0 0 0 0
1.1 0 0 0 0 0 0 0 0
0 0 0 4
2001 May 22
1
2D interpolation function
As part of a project I am doing, I had to present a 2D table as a
surface. This was fairly straightforward (using persp), but I needed to
interpolate points to make it sort of pretty. This was done by using
quadratic interpolation between the existing points to smooth out the
surface a bit. As I couldn't find an R function that did this, I wrote
an admittedly nasty pair of functions that
2011 Jun 29
3
time series interpolation
Hi there,
I?ve got a datatable in R which I try to interpolate with this and get the
Error below:
> new$temp<- approx(w03_11temp$temp, n = (nrow(w03_11temp)*5))$y
Error in new$temp <- approx(w03_11temp$temp, n = (nrow(w03_11temp) * 5))$y :
Object of type 'closure' not registered
Any idea?? Thanks a lot.
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