similar to: Using feather.plot to try and generate a stick plot of current velocity data (and having issues)

Hi, I'm looking for the way to make vector plot over a time line. This plot, similar to the "feather plot" in Matlab, is a line in which every thick (a time value) one vector is drawn with its length proportional to one variable (wind speed, for example) and its direction to another (wind direction, for example). Any ideas? Thanks, EKS -- ---------------------------- Eduardo

Hello, I would like to know more about how to use the "apply" family and have attempted to convert nested "for" loops in example code from Contributed Documentation ("The Friendly Beginners' R Course? by Toby Marthews (ZIP, 2007-03-01)") to an "apply" function(s). The relevant code is: distances=c(51,65,175,196,197,125,10,56) #distances of 8 houses

Hello everybody I'm trying to write a simple version of matlab's "quiver". The idea is that I have fluid with velocity defined on a grid. I have a matrix of x-components of velocity and a matrix of y-components and I want to see the overall flow pattern. (I work with 2D fluid mechanics problems). My first-stab function is below: quiver <- function(u,v,scale=1) # first

Dear All, I am not able to run the random forest with my dataset.. X<- 280 records with satellite data(28 columns) - B1min, b1max, b1std etc.. y<- 280 records with 3 columns - TotBasal Area, Stem density and Volume yref <- y[1:230,] #Keeping 1st 230 records as reference records want to set 0 to y values for records 231 to 280.. yimp <- y[231:280,] #records for which we want

Dear Friends, Yesterday I posed a question to the list concerning the possibility of doing animation examples in R. Here is an example S-Plus (4.5 for Windows ) that I wrote to illustrate my problem. If I try this in R (comment out the graphsheet and guilocator calls) I don't see my results until after the function has iterated through the 100 trials. I would like to plot each iteration.

Hi everyone, I am desperately looking for a method to interpolate strings within an SQL statement as follows: I get a lot of rows out of a database (in my example POSITION_to_ZIPCODE Database with holds records for German ZIP Code <--> Gauss-Krueger Coordinate System ) and want this to be selected and computed individually row by row as follows: library(RODBC) channel <-

Dear All, I am not very into object-oriented programming, but I would like to learn the ropes for some R applications. Quoting from the online R language definition (paragraph 5.1) > Consider the following simple example. A point in two-dimensional > Euclidean space can be specified by its Cartesian (x-y) or polar > (r-theta) coordinates. Hence, to store information about the location

Full_Name: Naoki Takebayashi Version: 0.65.0+R-release.diff (Oct 6, 1999) OS: Linux/Alpha Submission from: (NULL) (129.79.224.171) This will fix the "problem 2 (crash in fft)" in Bug ID #277 On Linux/Alpha, make check failed because R could not handle the following example in base-Ex.R ##___ Examples ___: # The Old Faithful geyser data data(faithful) : : ## Missing values: x <-

How can I look up the aspect ratio of a plot, so I can use that to correctly adjust the angle of text which is supposed to be parallel to a line in the plot? The following example code works for a 1:1 aspect ratio, but puts the text at the wrong angle if the plot region is short and wide or tall and narrow. I can't find a par() component containing the plot aspect ratio. It will be for

I've wrote some code to simulate a random walk in 2 dimensions on a lattice. Basically I want to add something in to make it plot it point by point so you can see what is going on. Heres my code for the random walk in 2d RW2D<-function(N) { i<-0 xdir<-0 ydir<-0 xpos<-vector() xpos[1]<-xdir ypos<-vector() ypos[1]<-ydir for (i in 1:N-1)

Hi, I was wondering if someone in the mailing list has any insight into this segfault error that I consistently find when running a script containing heatmap() in R 2.8.1 and 2.8.0 on a Linux 64-bit machine. Some points: 1. This occurs when running heatmap(). 2. Interestingly, if I source() the script or copy and paste the script in its entirety, this error occurs. However, if I run the

We are looking for a few more Birds of Feather sessions for the 2018 Euro LLVM Developers’ Meeting in Bristol,UK to round out our program. If you are interested in organizing a BoF, please send email to eurollvm-organizers at lists.llvm.org <mailto:eurollvm-organizers at lists.llvm.org> with the title, speakers, and brief abstract. It would be very helpful to have proposals submitted by

Today at 17:40-19:40 Eastern Standard Time (22:40-00:40 UTC) the IETF will be holding a Birds of a Feather session to discuss creating a working group for developing a next generation video codec for Internet use. Remote participation is open to everyone. This would be an effort somewhat similar to what we used to create the Opus audio codec. The IETF provides an open standardization process and

Today at 17:40-19:40 Eastern Standard Time (22:40-00:40 UTC) the IETF will be holding a Birds of a Feather session to discuss creating a working group for developing a next generation video codec for Internet use. Remote participation is open to everyone. This would be an effort somewhat similar to what we used to create the Opus audio codec. The IETF provides an open standardization process and

Today at 17:40-19:40 Eastern Standard Time (22:40-00:40 UTC) the IETF will be holding a Birds of a Feather session to discuss creating a working group for developing a next generation video codec for Internet use. Remote participation is open to everyone. This would be an effort somewhat similar to what we used to create the Opus audio codec. The IETF provides an open standardization process and

I am very confused about this. I want to convert a string to a name so I can use it to extract an element of a data frame using `$'. Here is my (non-working) code: do.graph <- function (meas) { fn <- paste("a", meas, ".dat", sep='') themeas <- read.table(fn, header=F) ameas <- as.name(paste("a", meas, sep=''))

Hi* *I know very little about Linux but I am trying to set up a* *flash drive with Feather Linux and part of the instructions say I need a copy of syslinux 2.11 to make it boot correctly. They say the newer versions which is all I can find will not let it boot correctly. I can't seem to find any contact information to tell them at Feather Linux that if a specific older file is needed why

Hi the list, I write a package for clusterizing longitudinal data using a non parametric algorithm. I develop the package under windows. To be as user friendly as possible, the package use some graphical procedure to "show" to the user the evolution of the cluster construction, and to export the graph in a friendly way. Here are some example : http://christophe.genolini.free.fr/kml

I thought about that star graph again, and realized that it would be quite a handy thing for visualizing cyclic data like time or compass direction. Here is a cleaned up (and renamed) version to do a polar plot that starts at the right and goes counterclockwise or a 24 hour clock plot that starts at the top and goes clockwise. There are probably other varieties that would be interesting. Jim

Hi everyone, I want you all help me to give an idea, how to draw pentagon with points? Maybe can use function, but I'm stuck. Yhank you. -- Hemavathi Ramulu [[alternative HTML version deleted]]