similar to: The beautiful math plot

Displaying 20 results from an estimated 700 matches similar to: "The beautiful math plot"

2006 Jul 10
2
about overdispersed poisson model
Dear R users I have been looking for functions that can deal with overdispersed poisson models. According to actuarial literature (England & Verall, Stochastic Claims Reserving in General Insurance , Institute of Actiuaries 2002) this can be handled through the use of quasi likelihoods instead of normal likelihoods. However, we see them frequently in this type of data, and we would like to
2006 Jul 24
3
trim function in R
Hi all, I am looking for a function in R to trim the last two characters of an 8 character string in a vector. For example, I have the codes 37-079-2, 370079-3,37-079-8 and want to trim them to 37-079 by removing the last two characters. Is sub the correct function to use, and if so how can I specify trimming the last 2 characters? I have read the help file, but can't quite figure out how
2006 Jan 26
2
footnote in postscript lattice
I would like to add a footnote to this graph but do not see a "footnote" command in the package:lattice documentation. I would like to note the "span=.8" as the footnote. postscript(file= ?C:/Documents and Settings/dsonneborn/My Documents/Slovak/output/pcb_tables/smooth_PCB_lines_four.ps?, bg=?transparent?, onefile=FALSE, pointsize=20,paper=?letter?, horizontal=TRUE,
2006 Aug 01
4
Fitting models in a loop
If I want to display a few polynomial regression fits I can do something like for (i in 1:6) { mod <- lm(y ~ poly(x,i)) print(summary(mod)) } Suppose that I don't want to over-write the fitted model objects, though. How do I create a list of blank fitted model objects for later use in a loop? Murray Jorgensen -- Dr Murray Jorgensen
2007 Sep 25
7
Who uses R?
Dear R users, I have started work in a Statistics government department and I am trying to convince my bosses to install R on our computers (I can't do proper stats in Excel!!). They asked me to prove that this is a widely used software (and not just another free-source, bug infected toy I found on the web!) by suggesting other big organisations that use it. Are you aware of any reputable
2006 Apr 26
2
About regression and plot
Dear R-help, This is my first R day. I want to ask some more beginner's questions. Q1. How can I obtain the covariance matrix for parameter estimates of a multiple regression? I checked ?lm but didn't get the information. Q2. How can I see the old graphs in the graph window? Q3. Can R plot animated graph? For example, I want to see the dynamic change of a 2D graph during a time
2005 Nov 14
2
change some levels of a factor column in data frame according to a condition
Dear R-users, I am looking for an elegant way to change some levels of a factor column in data frame according to a condition. Lets look at the following data frame: > data.frame(crit1=gl(2,5), crit2=factor(letters[1:10]), x=rnorm(10)) crit1 crit2 x 1 1 a -1.06957692 2 1 b 0.24368402 3 1 c -0.24958322 4 1 d -1.37577955 5 1 e
2005 Mar 08
1
To convert an adjacency list model into a nested set model
Dear R-help I am wondering if somebody wrote some code to convert an adjacency list model into a nested set model. In principal I want to do the same as John Celko mentioned it here with SQL: http://groups.google.co.uk/groups?hl=en&lr=lang_en&selm=8j0n05%24n31%241 %40nnrp1.deja.com Assume you have a tree structure like this Albert / \ /
2008 Jun 18
1
Question
Hi list, I am trying to convert my Data from 1st following format to the second. Any comment? You could copy following in Tinn R Data<- data.frame(location=c("postcode","sector","long/lat","sector"),Grade=c(" h","m","L","h"),value=c(2,3,5,6)) #Question: how can I reshape Data to the following # Grade postcode
2005 Apr 14
2
Legend in xyplot two columns
Dear R-Help I have some trouble to set the legend in a xyplot into two rows. The code below gives me the legend in the layout I am looking for, I just rather have it in two rows. library(lattice) schluessel <- list( points=list( col="red", pch=19, cex=0.5 ), text=list(lab="John"), lines=list(col="blue"),
2009 Apr 22
7
Consult some concepts about shadow paging mechanism
Dear All: I am pretty new to xen-devel, please correct me in the following. Assume we have the following terms GPT: guest page table SPT: shadow page table (Question a) When guest OS is running, is it always using SPT for address translation? If it is the case, how does guest OS refer and modify its own GPT content? It seems that there is a page table entry in SPT for the GPT page. (Question
2008 Apr 09
11
Number of words in a string
Hi R, A quick question: How do we find the number of words in a string? Example: C="Have a nice day" And the number of words should be 4. any built in function or?... Thanks, Shubha Shubha Karanth | Amba Research Ph +91 80 3980 8031 | Mob +91 94 4886 4510 Bangalore * Colombo * London * New York * San José * Singapore * www.ambaresearch.com This e-mail may contain
2014 Sep 27
3
[LLVMdev] Proposal to add Bitcode version field to bitcode file wrapper
Sorry if I was unclear. There are currently no “known incompatibilities” that I am aware of, although I fully admit to not being an expert on the topic. The idea is that we add versioning information to the bitcode so that if an issue were discovered, it could be easily detected and dealt with. Douglas Yung From: Bob Wilson [mailto:bob.wilson at apple.com] Sent: Friday, September 26, 2014 16:39
2007 May 02
3
Dumping Xen dom0 kernel output to serial console
Hi- I am having a weird problem with setting dom0 kernel output to the serial console with Xen 3.0.4-1, below is my grub setting. With this setting if I don''t enter the grub menu and have the default boot to the first image, everything works fine and I can get output/input to the serial console. The problem is when I enter the grub menu and select the image to boot from, if I
2014 Oct 06
3
[LLVMdev] [cfe-dev] Proposal to add Bitcode version field to bitcode file wrapper
On Sun, Oct 5, 2014 at 8:10 PM, Yung, Douglas < douglas_yung at playstation.sony.com> wrote: > Hi – > > > > I realize the thread has drifted a little, but I wanted to get back to my > original proposal. I would like to make a change to the bitcode file > wrapper to include the version of llvm that produced the bitcode. I would > like to write this version into the
2014 Sep 27
5
[LLVMdev] [cfe-dev] Proposal to add Bitcode version field to bitcode file wrapper
As I understand it, the bitcode compatibility promise doesn't extend as far as debug info metadata (happy to be wrong here!). I think we have a usecase where need to guarantee that debug information from any two arbitrary bitcode files going into an LTO link will result in the expected/correct debug information going into the resulting ELF file; unless we can be sure that this will always
2014 Sep 28
2
[LLVMdev] [cfe-dev] Proposal to add Bitcode version field to bitcode file wrapper
On Sat, Sep 27, 2014 at 11:35 PM, Alex Rosenberg <alexr at leftfield.org> wrote: > How is this use case different from the LTO-supported toolchains shipped > by other vendors such as Apple? Do they have this theoretical problem too? > > If the issue is solely constrained to debug info metadata, then why not > use metadata to describe the format/version of the debug info? >
2016 Mar 15
2
LLVM.org/viewvc down?
Is there any eta for when viewvc will be back? I prefer to use viewvc because all of the commit emails have the SVN commit number, but not the corresponding git hashes, so it makes it easier to look it up. Or is there some easy way to map an svn commit number to the corresponding git hash? Douglas Yung From: Johan Engelen [mailto:jbc.engelen at gmail.com] Sent: Saturday, March 12, 2016 5:03 AM
2007 Jun 05
7
Chinese, Japanese, Korean Tokenizer.
Hi, I am looking for Chinese Japanese and Korean tokenizer that could can be use to tokenize terms for CJK languages. I am not very familiar with these languages however I think that these languages contains one or more words in one symbol which it make more difficult to tokenize into searchable terms. Lucene has CJK Tokenizer ... and I am looking around if there is some open source that we
2012 Aug 09
2
Olympics: 200m Men Final
Hello, Have you seen the log-linear prediction of the 100m winning time in R mailed to the list yesterday by David Smith, subject Revolutions Blog: July roundup? "A log-linear regression in R predicted the gold-winning Olympic 100m sprint time to be 9.68 seconds (it was actually 9.63 seconds): http://bit.ly/QfChUh" The original by Markus Gesmann can be found at