Displaying 20 results from an estimated 300 matches similar to: "how to create analog stripchart plots of x vs t (t=mm/dd/yyyy hh:mm:ss)"
2009 Jul 03
1
The time series analysis functions/packages don't seem to like my data
I have hundreds of megabytes of price data time series, and perl
scripts that extract it to tab delimited files (I have C++ programs
that must analyse this data too, so I get Perl to extract it rather
than have multiple connections to the DB).
I can read the data into an R object without any problems.
thedata = read.csv("K:\\Work\\SignalTest\\BP.csv", sep = "\t", header
=
2006 Sep 14
1
working with strptime data
Dear R-forum,
I am looking for a good resource/help on working with POSIXct values and
controlling the pretty x-axis labels and tick marks for a data VS time
plots. Specifically, I wish to do programming logic which creates
different vertical ablines calculations based on the range of times
which i am working on. The default plot results are adequate, but I
would love to make explicit calls on
2018 Jan 24
4
Geometry delaunayn and deldir results, differing results from Octave due to decimal precision?
The problem:
I would like to translate the Octave algorithm in griddata.m to R.
Within the griddata algorithm calls are made to the Delaunay function. For the R translation I have found delaunayn within the "geometry" package and also the deldir package.
Both do similar things but give slightly different results depending on the input.
The question is, what is making the results for the
2009 Apr 28
1
[macosx] improving quartz & Aqua Tk behaviour outside of RGui
Hello,
On Mac OS X, certain Aqua/Quartz UI functionality requires an
application to be launched from within an app bundle, or
(alternatively) requires a Carbon application with a resource fork.
Playing with the wxWidgets distribution, I discovered that it is quite
easy and transparent to make such a Carbon app from (I guess) any
command line application. When applied to the R executable called
2009 Apr 28
1
[macosx] improving quartz & Aqua Tk behaviour outside of RGui
Hello,
On Mac OS X, certain Aqua/Quartz UI functionality requires an
application to be launched from within an app bundle, or
(alternatively) requires a Carbon application with a resource fork.
Playing with the wxWidgets distribution, I discovered that it is quite
easy and transparent to make such a Carbon app from (I guess) any
command line application. When applied to the R executable called
2007 Jul 20
1
Column-mean-values for targeted rows
Hi all,
I'm handling massive data.frames and matrices in R (30000 x 400).
In the 1st column, say, I have 0s and 1s indicating rows that matter; other columns have probability values.
One simple task I would like to do would be to get the column mean values for signaled rows (the ones with 1)
As a very fresh "programmer" I have build a simple function in R which should not be very
2012 Jan 04
1
Adding a vertical line to plot with two overlapping density plots
Hi,
A simple question I hope. I wish to add a single vertical line to a plot
with several density plots.
Here is a simplified example.
############
thedata <- data.frame(x1=rnorm(100,1,1),x2=rnorm(100,3,1)) #create data
thedata.m<-melt(thedata)
densityplot(~value, thedata.m, groups=variable,auto.key=list(columns=2))
#this gives the two density plots
#########
what I wish now is to add a
2008 Jul 16
1
Problem with mpi.close.Rslaves()
I am running R 2.7.0 on a Suse 9.1 linux cluster with a job scheduler
dispatching jobs and openmpi-1.0.1. I have tried running one of the
examples at http://ace.acadiau.ca/math/ACMMaC/Rmpi/examples.html in Rmpi
and they seem to be working, except mpi.close.Rslaves() hangs. The
slaves are closed, but the master doesn't finish its script. Below is
the example script and the call to R. The job is
2008 Nov 07
1
Rmpi task-pull
Hi, I'm testing the efficiency of the Rmpi package regarding parallelization
using a cluster.
I've found and tried the task pull programming method, but even if it is
described as the best method, it seems to cause deadlock, anyone could help
me in using this method?
here is the code I've found and tried:
# Initialize MPI
library("Rmpi")
# Notice we just say "give us
2008 Jun 26
6
ActiveRecord search Query Question
I''m not using ferret because the search I need is not that complicated.
I created a basic active record search. I''m using some code from the
pragmaticprogrammer book. This is the issue:
I can get the single keyword to work fine when entered into the search
box, but when you put to keywords separated by a space the search
returns no results. It makes sense since the function
2011 Oct 18
2
Non-linear maximization function in R
Hello,
# Full disclosure. I am not sure if my problem is a bug(s) in the code, or a
fundamental misunderstanding on my part about what I am trying to do with
these statistics. I am not familiar with maximum likelihood tests.
# I currently have two vectors
Aequipecten<-c(0, 0, 1, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 0, 0, 0, 0, 0, 0, 0,
2010 Aug 18
2
Different way of aggregating
Hi
Usually "aggregate" is used to calculate things such as the sum of all data
on the first day, the sum next day, and so on.
But how can I calculate the mean of the first hour of all days, the mean of
the second hour of all days, and so on. ???
That's
Most examples:
today at 1am + today at 2am + today at 3am +.... -> sum
today
tomorrow at 1am + tomorrow at
2007 Jul 06
2
access to 'formula' terms in a user function
This is probably buried somewhere in the R help archives, but I've been
unable to find it, so perhaps the keywords I use here will help bring the
topic to the surface more easily for future users.
I want to write my own modeling function (ultimately for some
multidimensional windowing - but this question is on scripting basics). For
purposes of figuring out my needs, lets just consider
2018 Jan 24
0
Geometry delaunayn and deldir results, differing results from Octave due to decimal precision?
"The question is, what is making the results for the R packages different
from each other?"
There are literally thousands of R packages, contributed independently by
thousands of people. There should be no expectation of consistency or for
that matter, "correctness", among them. Caveat emptor.
Only within the base R distribution, maintained and mostly written by the R
Core
2006 Feb 07
2
Question about Classes.
I have the attached class that I''m writing. The problem that I''m
running into is that I can not access the options from the createArray
function which get called after the ajax request gets done. I want to
move the values of the xml file to an array and story it in the options
variable. Can someone explain what I''m doing wrong?
var LeaderInfo = Class.create();
2009 Nov 29
1
Convergence problem with zeroinfl() and hurdle() when interaction term added
Hello,
I have a data frame with 1425 observations, 539 of which are zeros. I
am trying to fit the following ZINB:
f3<-formula(Nbr_Abs~ Zone * Year + Source)
ZINB2<-zeroinfl(f3, dist="negbin", link= "logit", data=TheData,
offset=log(trans.area), trace=TRUE)
Zone is a factor with 4 levels, Year a factor with 27 levels, and
Source a factor with 3 levels. Nbr_Abs is counts
2006 Jul 07
1
densityplot and panel.groups
I am trying to plot multiple densityplots on each panel, and using
panel.groups to do some additional plotting (not included in the
example) as in this example.
library(lattice)
thedata <- data.frame(x=rnorm(1200),class=rep(1:3,each=200,times=2),
group=rep(1:2,each=100,times=6))
densityplot(~x | class,groups=group,
xlab='x',
panel.groups =
2010 Sep 09
0
Plotting dates and grid lines on the X-Axis of xyplot
I have a plotting function that is plots a multi-panel plot, with the x-axis
as a date and various y-axes.
I would like to control the frequency of the X-axis labels, ticks and grid
lines. However with the following code I get no annotation on the X-axis at
all.
Here is a minimal data.frame
Case Days Well Stream Value
1 Observed 0 P-1 Oil 1000.807785
2 Observed 31
2009 Oct 02
1
xts dates spacings
Hello!
Please help - can't find any options how to remove very big spaces between
two dates containing intraday prices plotted by plot.xts. It looks like the
following: on the left side of the plot window is the first bunch of points,
the same is for the right hand side and a long line connecting them in the
middle. I would want to merge them (cut spaces) somehow.
In any case thanks for
2016 Dec 12
2
accessing data by packagename::dataname from within package code fails.
I have narrowed down the problem.
The error
Error : 'AminoAcids' is not an exported object from 'namespace:bibliospec'
Error : unable to load R code in package 'bibliospec'
occurs only if I try to access the data using bibliospec::AminoAcids
within the initialize method of an R reference class.
It does work, as far as I tested everywhere else. In other methods of
a