search for: cornejo

...Some fishes Sex Lenght male 15 fema 20 fema 17 fema 19 male 18 So the idea is mean(Lenght) by sex, in order to have sex: Male mean=XX Sex: Fema mean=YY In this case is quite easy to do it by a loop, but I have a huge DB so is not an option. Any suggestion? Thanks in advance! -- Jorge Cornejo Donoso Universidad Austral de Chile Portales 73, Coyhaique,CP 5950000, Region de Ais?n, Chile Tel +56 67 244520 Fax +56 67 239377

Hi i have to table with IDs in each one. I want to make a join (as in sql) by the ID. Is any way to use the RODBC package (or other) in local tables (not a access, mysql, sql, etc. ) and made the join? Thanks in advance

...; tapply(zone1.df$len,zone1.df[,-3],mean) sex zone fema male 1 18.5 15 2 19.0 18 > Hope this helps! Sincerely, Erin Hodgess Associate Professor Department of Computer and Mathematical Sciences University of Houston - Downtown mailto: hodgess at gator.uhd.edu From: "Jorge Cornejo-Donoso" <jorgecornejo at uach.cl> To: "'Erin Hodgess'" <hodgess at gator.dt.uh.edu> Subject: RE: [R] RV: by sentence OK.. Thank for the advice. By and tapply works with 1 categorical variable, but what can be used for 2 categorical variables. Example: Zone...

...t fail and the process stops. When the code finish with no problems, it sends an e-mail, but if fails, I'm not aware unless I check the working process, and I cannot be checking the process all day!. Is there any way to send me a warning when the process stops/fails? Thanks in advance Jorge Cornejo

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Hi, Does anyone know if the alternatives in the 'switch' function can be specified as strings containing spaces?  Neither of the two approaches below works. switch(expr, "Choice 1"="My first choice", "Choice 2"="My 2nd choice", "Choice 3"="My 3rd choice") x <- c("Choice 1", "Choice 2", "Choice

--- John Kane <jrkrideau at yahoo.ca> wrote: > Date: Thu, 19 Apr 2007 15:50:36 -0400 (EDT) > From: John Kane <jrkrideau at yahoo.ca> > Subject: RE: [R] Character coerced to factor and I > cannot get it back > To: Jorge Cornejo-Donoso <jorgecornejo at uach.cl> > > > --- Jorge Cornejo-Donoso <jorgecornejo at uach.cl> > wrote: > > > Maybe you could made something like: > > Id <- floor(number/10000) > > > > On this way you would get out the last 4 numbers > of &gt...

Hi, I have a data frame with column names "1", "2", "3", ... and I'd like to extract a subset based on the values in the first column. None of the methods I tried worked (below). x <- subset(dframe, 1 = = "My Text") x <- subset(dframe, "1" = = "My Text") x <- subset(dframe, names(dframe)[1] = = "My Text") Q

I am writing some code to obtain publication-like plots (like the ones can be obtained with SigmaPlot). I am not able to find the dimensions of a point. Parameters like cex make you able to make it bigger or smaller but I need to know the exact dimension (in relative coordinates : if my plot is 640x480 a dot plotted with cex=1.5 will be...) Massimo Cressoni

Hello, After reading help file, various threads on this board, and other online tutorials, I've attempted to use gsub (using Perl-like syntax) to change a currency string into something that can be converted to numeric type using only one regular expression.  Can anybody point out my error?  Note that >  x <- "\"$ 1,200,300,400.50\"" Tried the following in an

Hi, Would anyone have any idea as to why I would obtain completely different results when subsetting using the subset function vs bracket notation? I have a data frame with 65 variables and 4382 rows. When I use execute the following subset command I get the correct results (125 rows) > subset(df, Renewal==TRUE, 1:2)   However, I tried to obtain the same results with bracket notation as

Hi, I am looking any way to communicant with Arduino (http://www.arduino.cc/) Wiring (http://www.wiring.org.co) boards and read data generate with sensor on these. If anyone know how to do it, I will appreciate if could give some advice. Thanks in advance

Hi, exist any way to create a windows installable package from a Linux R installation ?? I try R CMD build --binary --use-zip MyPack But generate a tar.gz file. Thanks in advance

Hello, I'm wondering if the 'mosaic' plot of the vcd package (or any other function for that matter) can be used with a continuous variable that should be represented via various categorical variables.  All the documentation I've read lead me to believe that it only works with counts of categories. Alternatively, I've thought of first creating a contingency table where the

Hello, Is there a way to set the maximum width of character columns when printing a data frame? I've looked into print(), format(), and options() and have been unsuccessful. For example, I'd like to achieve the results below without having to modify the data itself. > x <- data.frame(c1=rnorm(5), c2="ABCDEFGHIJKLMNOPQRSTUVWXYZ") > x c1 c2 1

Hello, I'm trying to figure out how to find the index of the second occurrence of "/" in a string (which happens to represent a date) within a data frame column. I've used the following code successfully to find the first instance of "/". dframe <- data.frame(date=c("5/14/2011", "4/7/2011")) dframe$x1 <- regexpr("/", dframe[, 1])

Dear All, The institute I work for is organizing an internal workshop for High Performance Computing (HPC). I am planning to attend it and talk a bit about fluid dynamics, but there is also quite a lot of interest devoted to data post-processing and management of huge data sets. A lot of people are interested in image processing/pattern recognition and statistic applied to geography/ecology, but I

...f all possible loglinear models? > (Christopher W. Ryan) > 90. Re: My surprising experience in trying out REvolution's R > (David M Smith) > 91. Re: Changing the binning of collected data (Luc Villandre) > 92. Signed-Binary transform test (Fisher.test??) (Jorge Cornejo) > 93. multiple plots in same graph window (BARRES-DE-ALMEIDA U.) > 94. Re: Polyspline Integration (Denney, William S.) > 95. Re: automatic exploration of all possible loglinear models? > (Dimitris Rizopoulos) > 96. Re: multiple plots in same graph window (David Winsem...

I had originally mentioned this only to 2 people, which was Jordan K. Hubbard and Paul Henning-Kemp, but since I have received a lot of queries on this, I thought I might as well post it on the FreeBSD announce groups. Included below is a posting done on the Linux-atm mailing group, by Pragnesh Sampat. I have just adapted for FreeBSD. RV -------------------------- Announcement

Hi, I'm traing to use the GLM to find tendences on my data. E.G. Data.frame: MyData Len Zone Year 12 1 2002 21 1 2003 32 1 2004 32 2 2002 32 2 2003 31 2 2004 3 3 2002 4 3 2003 3 3 2004 32 4 2002 4 4 2003 5 4 2004 I want toi fing tendences on the len, if they change over the year (the anova say yes), but I wan't to include the zone as a Random effect So, I have something like this: