Displaying 20 results from an estimated 7000 matches similar to: "Polar coordinate"
2011 Apr 11
1
Polar Plots
Dear List,
Following the link below (
http://rgm2.lab.nig.ac.jp/RGM2/func.php?rd_id=plotrix:clock24.plot) I got an
interesting polar plots which displayed my data and the time of observation.
Thank you very much for providing such details.
However, I have two set of data which I wish to display in the same polar
plot. I tried using points to add the second data but could not succeed.
That is,
2016 Apr 22
2
clock24.plot/radial plot
Kind Experts,
Many thanks for your guide. I have tried to figure out something that
can help me plot my own data using the examples you referred me to. I
copied part of the code as:
set.seed(44)
N=500
events <- as.POSIXct("2011-01-01", tz="GMT") +
days(floor(365*runif(N))) +
hours(floor(24*rnorm(N))) + # using rnorm here
2016 Apr 22
0
clock24.plot/radial plot
Looks like you forgot to load the lubridate package
library(lubridate)
You are calling functions days(), hours(), minutes(), seconds(), and hour() which all come from that package.
-------------------------------------
David L Carlson
Department of Anthropology
Texas A&M University
College Station, TX 77840-4352
-----Original Message-----
From: R-help [mailto:r-help-bounces at
2016 Apr 22
0
clock24.plot/radial plot
I use ggplot2 for all my plotting needs where you can make plots circular
with the coord_polar. Maybe this will help you along:
http://rstudio-pubs-static.s3.amazonaws.com/3369_998f8b2d788e4a0384ae565c4280aa47.html
On Fri, 22 Apr 2016 at 08:31 Ogbos Okike <giftedlife2014 at gmail.com> wrote:
> Dear All,
> I am trying to generate a circular/radial plot. The script below has a
>
2016 Apr 21
2
clock24.plot/radial plot
Dear All,
I am trying to generate a circular/radial plot. The script below has a
result I am looking for:
testlen<-rnorm(24)*2+5
testpos<-0:23+rnorm(24)/4
clock24.plot(testlen,testpos,main="Test Clock24 (lines)",show.grid=FALSE,
line.col="green",lwd=3)
if(dev.interactive()) par(ask=TRUE)
# now do a 'daylight' plot
2007 May 01
2
Polar graph of time and tide
I have been trying to visualize times of lowest tides, month by month.
I have tide predictions with times either in unix time or a text
format, and heights in feet or meters. I had been able to derive the
clock times of each prediction. I would now like to graph this data
with points showing heights as "r" and times as "theta", from 0000 to
2355. There is a seasonal
2009 Aug 27
2
chooseCRANmirror()
Hello,
I am runing linux on Ubuntus. I find it difficult to install R packages. I
am in South Africa. It always asked me to choose the nearest CRAN mirror. I
normally choose South Africa and once I clicked Ok, the error message pasted
below will appear. Please I am a new student of R and Ubuntus. The other
warning "argument 'lib' is missing: using
2009 Aug 27
2
Installing R Packages on ubuntus
Hello,
Please I am a learner. My operating system is ubuntus and I am trying to
install raster package from R-forge site. I entered sudo apt-get install
r-base-dev on the command line and that worked fine. I then typed R at the
command line so as to run R. Inside R, I typed >
install.packages("raster",repos="http://R-Forge.R-project.org<http://r-forge.r-project.org/>")
2011 Jan 26
3
adding error bars
Dear all,
I am trying to add error bars on a boxplot but have encountered an error as
indicated below. Is there a package I need to install or a library I have to
load before this goes please.
Thanks for any idea.
Ogbos
x<-replicate(20,rnorm(50))
boxplot(x,notch=TRUE,main="Notched boxplot with error bars")
error.bars(x,add=TRUE)
Error: could not find function "error.bars"
2024 Mar 29
2
Output of tapply function as data frame: Problem Fixed
Dear Rui,
Thanks again for resolving this. I have already started using the version
that works for me.
But to clarify the second part, please let me paste the what I did and the
error message:
> set.seed(2024)
> data <- data.frame(
+ Date = sample(seq(Sys.Date() - 5, Sys.Date(), by = "1 days"), 100L,
+ TRUE),
+ count = sample(10L, 100L, TRUE)
+ )
>
> # coerce
2016 Apr 30
3
Could not find function "pointsToRaster"
Dear All,
I have a script that draws longitude and latitude of lightning
occurrence. This script was running fine before. But when I changed my
system and do a fresh install on another laptop, this error persist.
source("script")
Error in eval(expr, envir, enclos) :
could not find function "pointsToRaster"
I have tried to see if there is any other package I need to install
2009 Aug 25
2
latitude and longitude distribution
Good day to you all,
I have lightning data containing date, time, latitude and longitude. I hope
that distribution of latitude and longitude will give number of lightning
occurrence in a region. I have used factor function to sum up the number of
events on latitude and longitude axis and saved as x and y. But when I tried
to plot the two, I had and error message ( Error in image.default(x, y, z) :
2024 Mar 29
1
Output of tapply function as data frame: Problem Fixed
?s 01:43 de 29/03/2024, Ogbos Okike escreveu:
> Dear Rui,
> Thanks again for resolving this. I have already started using the version
> that works for me.
>
> But to clarify the second part, please let me paste the what I did and the
> error message:
>
>> set.seed(2024)
>> data <- data.frame(
> + Date = sample(seq(Sys.Date() - 5, Sys.Date(), by = "1
2010 Mar 09
3
Removing Zeros from matrix
Hi Everybody,
I have a matrix of about 45 columns. Some of the rows contain zeros. Using
>data1<-data[complete.cases(data),], I can remove the "NA" rows. But I am
unable to tackle that of zeros.
Can anybody give me an idea of how to remove rows containing zeros in a
matrix.
Thanks so much
Best
Ogbos
[[alternative HTML version deleted]]
2011 Jul 27
2
Expression: +/-sigma
Dear List,
I am trying to label a plot with the symbol +/- sigma. Using something like
- expression (2*sigma) gives me the symbol 2ó. However, adding +/- to it
beats me.
The code I am using is: plot(x,y,type="l",main=" expression(paste("±",
plain(2*ó)),sep="").
Any suggestion will be appreciated.
Best
Ogbos
[[alternative HTML version deleted]]
2018 Jan 22
0
Manipulating two large dataset differing by date and time
Hi Ogbos,
You can just use ISOdate. If you pass more values, it will process them:
ISOdate(2018,01,22)
[1] "2018-01-22 12:00:00 GMT"
> ISOdate(2018,01,22,18,17)
[1] "2018-01-22 18:17:00 GMT"
Add something like:
if(is.null(data$hour),data$hour<-12
then pass data$hour as it will default to the same value as if you
hadn't passed it.
Jim
On Mon, Jan 22, 2018 at 6:01
2016 Apr 22
0
clock24.plot
Hi Ogbos,
Here is your sample data plotted in roughly the same way as the image.
You can get the hours to start at the bottom, but it will require more
code.
swe$hour<-as.numeric(sapply(strsplit(swe$time,":"),"[",1))
swe$FD<-sample(1:2,nrow(swe),TRUE)
library(plotrix)
clock24.plot(swe$count,swe$hour,rp.type="s",radial.lim=c(3000,4010),
2010 Oct 14
1
installing grid package
Hi all,
I can't understand why grid package failed to installed on my machine. Can
anybody have a look and advice on where I am missing it.
My R version is 2.9.2. After untarring: tar xzvf grid_0.7-4.tar.gz, I
tried to configure or make but none worked, 'no such files'. I have also
tried using : sudo R CMD INSTALL /home/ogbos/Desktop/goo/grid_0.7-4.tar.gz
which also resulted in the
2010 Jan 30
1
pca in R
Hi,
I am learning how to do principal component analysis in R. However, since I
am family with only a few built-in functions like prcomp, sd, cor, I started
manually with examples in text books while trying to use the few functions I
know to manipulate what they have in the text. From the example in the text
I obtained a data set. Using cor and cov, I calculated the correlation and
covariance of
2010 Oct 07
1
X11 is not available
Dear All,
I have just installed a new version of R (Version R-2.11.0) and did install
other packages such as raster with ease. However, I could not start the
plotting device x11(). I remembered that somewhere at the stage of
installation, an error occurred : 'configure: error: --with-x=yes (default)
and X11 headers/libs are not available'
I tried avoiding this error by using ./configure