similar to: A introductory question about Zips law (Newbie to statistics)

Displaying 20 results from an estimated 700 matches similar to: "A introductory question about Zips law (Newbie to statistics)"

2008 Dec 27
1
Zipf fitting using R
Dear R-users, I am new to R and would like to use it for fitting the zipf distribution to some numeric data that I have. Here's the snippet that I use: library(VGAM) X <- read.table(file("~\\mydata.txt", encoding="latin1")) w <- as.vector(t((X[2]))) w <- w/sum(w) y <- (1:length(w)) fit = vglm (y ~ 1, zipf, tra=TRUE, weight=w) zipf(N=NULL,
2011 Dec 11
3
Bioconductor. MA plot for qPCR array
Dear all, Is there anyway too generate MA plot for 2 qPCR assays (an array of 2x 400). -- View this message in context: http://r.789695.n4.nabble.com/Bioconductor-MA-plot-for-qPCR-array-tp4182805p4182805.html Sent from the R help mailing list archive at Nabble.com.
2010 Oct 11
1
plotting Zipf and Zipf-Mandelbrot curves in R
Using R, I plotted a log-log plot of the frequencies in the Brown Corpus using plot(sort(file.tfl$f, decreasing=TRUE), xlab="rank", ylab="frequency", log="x,y") However, I would also like to add lines showing the curves for a Zipfian distribution and for Zipf-Mandelbrot. I have seen these in many articles that used R in creating graphs. Thank you! [[alternative HTML
2011 Dec 27
2
How to create a matrix with 3 dimensions from several 2 dimensional matrice?
Hi every one, How is it possible to create a matrix with 3 dimensions from several 2 dimensional matrice? Is it possible that each of "elementary/building block" matrices could be called by its corresponding original name? Thanks alot. -- View this message in context:
2012 Mar 14
2
Apply a loop containing a function on a list
Hi all, I want to do this: B.list$aa= (a loop containing My.fun acting on the reults of second function on a A.list$aa)) or, overally B.list$aa = function (A.list$aa) B.list and A.list has many sublists aa, ab and.... Is there a way I can apply the function and loop on all sublists of A.list and get B.list? Thanks in advance. -- View this message in context:
2007 Oct 17
2
power law fit with unknown zero
Dear R-helpers I would like to do a fit of the form: y = a (x+c)**b, where a, b and c are unknown. Does anybody know how to do it? Thanks Thomas
2011 Oct 22
1
How to it a "loess curve" and obtain the equation in R?
Hi! How can I fit a loess curve to an array (384 x 2). How can I obtain the equation for thi fi? Thanks in advance. -- View this message in context: http://r.789695.n4.nabble.com/How-to-it-a-loess-curve-and-obtain-the-equation-in-R-tp3927622p3927622.html Sent from the R help mailing list archive at Nabble.com.
2005 Jan 25
1
Zipf random number generation
Hi, Is there a Zipf-like distribution RNG in R? Thanks, Weiguang
2009 Aug 03
2
fitting a truncated power law
Dear all, How can I fit a truncated power law to a vector? I can't find a function to do that. If the function provides an AIC, even better. John
2012 Apr 23
2
zipfR help
Hi, I have a question on generating random variables based on zipf-mandelbrot distribution. So when I execute the following lines: ZM = lnre ("zm", alpha = 2/3, B=0.1) zmsample = rlnre (ZM, n =100) zmsample It generates 100 random values based on a zipf-mandelbrot distribution as below. But how do I make sure the generated random number is within the range of 1 - 6000 only? Can I
2007 Jul 07
9
Sip Providers
Hi Everyone, I'm planning my first asterisk box, and I'd like to know what SIP providers everyone likes. Voipjet? Gizmo? Somebody else? Thanks, Alex
2011 Oct 20
2
Creating affybatch objects from matrix (data from qPCR array)
Hi! Is There a way to manually create an affybatch object from qPCR array data? -- View this message in context: http://r.789695.n4.nabble.com/Creating-affybatch-objects-from-matrix-data-from-qPCR-array-tp3921559p3921559.html Sent from the R help mailing list archive at Nabble.com.
2011 Dec 17
1
Binning a 2 column matrix by avarages of rows.
Newbie here. Many apologies in advance for using the incorrect lingo. I'm new to statistics and VERY new to R. I have a "nx2" matrix , I want to sort the values based on the average of 2 columns and put k lowest (or highest) values in bin1, second k high/low values in bin2, and so on (bins would be of the same dimensions). I should also know what the first index (or position) of
2012 Apr 05
1
Sum of sd between matrix cols vs spearman correlation between them
Hi all, I have a matrix (n*2), I want to compare 2 operators (2 normalization for array results) on these matrix. The 2 columns should ideally become the same after operations (normalization). So to compare operations, I do this for each normalization: s= sum (apply (normalized.matrix, 2,sd)) c= cor (normalized[,1],normalized [,2], method='pearson') I expect that if normalization 1
2011 Dec 18
1
Smoothing spline with smoothing parameters selected by "generalized maximum likelihood"
Hi there, How may I smooth spline two vectors with the smoothing parameter selected by generalized maximum likelihood (GML) .? Thanks a lot. -- View this message in context: http://r.789695.n4.nabble.com/Smoothing-spline-with-smoothing-parameters-selected-by-generalized-maximum-likelihood-tp4210679p4210679.html Sent from the R help mailing list archive at Nabble.com.
2012 Jan 09
1
What is the function for "smoothing splines with the smoothing parameter selected by generalized maximum likelihood?
Dear all, I am new to R, and I am a biotechnologist, I want to fit a smoothing spline with smoothing parameter selected by generalized maximum likelihood. I was wondering what function implement this, and, if possible how I can find the fitted results for a certain point (or predict from the fitted spline if this is the correct language) -- View this message in context:
2010 Nov 30
1
Indexing images, .zip, .dwg and other binary files
I have scoured the documentation and mailing list but can't find what seems to be an obvious question. I would simply like to index binary files (images, zips, dwg files) so that they are included in the search results. They wouldn't need to be parsed for content, only have the filenames searchable. Is this possible with Xapian? If not has anyone come up with an alternate strategy?
2012 Feb 27
3
What is the fastest way to combine all columns of a matrix to one column?
Dear all, Newbie: What is the fastest way to combine all columns of a matrix to one column? -- View this message in context: http://r.789695.n4.nabble.com/What-is-the-fastest-way-to-combine-all-columns-of-a-matrix-to-one-column-tp4423882p4423882.html Sent from the R help mailing list archive at Nabble.com.
2010 Jan 12
4
Documents in home folder 'Read Only'
My user is logged in to the Samba Server. smb.conf has the following: [homes] comment = Home Directories read only = No create mask = 0775 directory mask = 0775 browseable = No writeable = Yes The files in the user's home directory are set to chmod 777. What do I need to do to enable the user to write to her Directory?
2007 May 21
2
Rails'' fixtures suck! But what about something like this?
Sorry about the very long email, but this is a hairy topic that''s been annoying me for some time and I decided to try to do something about. Also, if you got this twice, I apologize too, but it didn''t seem to have successfully gone out the first time. Background: ---------- I''ve been dealing with Rails for about a year and a half now. I''ve been using