search for: scienza

...be to export PLOT 1 , say as png, and then overlay on it PLOT 2 with pixmap() as in this example http://www.stat.auckland.ac.nz/~paul/RGraphics/custombase-pixmap.R but it seems to me a bit too much complicate Thanks in advance for your time -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Ubuntu 8.04.3 LTS -- GNU Emacs 23.0.60.1 (x86_64-pc-linux-gnu, GTK+ Version 2.12.9) ESS version 5.5 -- R 2.10.0

...CONC, df.mydata$SAMPLE, max ) (df.mydata$PERCENTAGE <- ifelse(df.mydata$SAMPLE == "A", df.mydata$CONC / MAX[1], ifelse(df.mydata$SAMPLE == "B", df.mydata$CONC / MAX[2], df.mydata$CONC / MAX[3]))) -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

...I'm trying to use cross-validation (cv.glm) for count data. Does someone know which is the appropriate cost function for Poisson distribution? Thank you in advance. Valerio. Conservation Biology Unit Department of Environmental and Territory Sciences University of Milano-Bicocca Piazza della Scienza,1 20126 Milano, Italy. ------------------------------------------------------ Scopri se hai Vinto un Tv Color LCD! Clicca qui http://click.libero.it/webnation15nov06

...btained instead. It is a multlple xy plot where the values of each variable are plotted against the values of the others. Is there an equivalent command in R to obtain a plot similar to that showed above? Thanks for your time in reading this mine. Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta

...ge. Is it possible to produce an output with xtable, but similar to the one of the first line ? In other words I do not want to use \longtables and the similar. Where should I look for info ? In Latex ? In Sweave ? In xtable ? Thanks a lot -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

...d, signif, ceiling, trunc, and floor but without success. Any hint to solve this problem ? Thanks a lot http://www.openofficetips.com/blog/archives/2005/04/rounding_to_the.html http://www.gnome.org/projects/gnumeric/doc/gnumeric-MROUND.shtml -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

...ave strings to manipulate, I must face my ignorance in the topic of regular expression and its syntax. Is there any page with examples, where I can improve my knowledge and stop being frustrated each time I have to manipulate strings? 8rino -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it

...at computer on daily basis for the next 3-5 years. Thanks a lot for any suggestion Processor AMD ATHLON 64 DUAL CORE 4000+ (socket AM2) Mother board ASR SK-AM2 2 Ram Corsair Value 1 GB DDR2 800 Mhz Hard Disk WESTERN DIGITAL 160 GB SATA2 8MB -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

...", foo) but I always get errors either on gsub('V_\(.\)_', 'V_0\1_', foo) or I get not what I'm looking for on gsub('V_._', 'V_0._', foo) gsub('V_._', 'V_0\1_', foo) Thanks in advance -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Ubuntu 8.04.3 LTS -- GNU Emacs 23.0.60.1 (x86_64-pc-linux-gnu, GTK+ Version 2.12.9) ESS version 5.5 -- R 2.10.0

...e 3.56b, pag 93 ???????????not the foggiest idea ##Figure 3.57, pag 94 acf(resid(nls.1), xlim = c(1, 15), lab = c(5, 4, 7)) ##Try to fit a model with autocorrelated residues (Problems !!) nls.2 <- update(nls.1, corr = corAR1(0.67)) -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

...anel, but I cannot imagine how to do it with variables external to the panel itself. I suppose that the panel functions are not useful here. I'm wandering through par.settings, themes and panel.fill, but still without success. Any hint ? -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Ubuntu 8.04.3 LTS -- GNU Emacs 23.0.60.1 (x86_64-pc-linux-gnu, GTK+ Version 2.12.9) ESS version 5.5 -- R 2.9.2

...make life easy. Therefore I would like to know from you, how can I solve this problem: Should I install the i386 version of R ? Should I install another flavour of Linux ? Which one ? Fedora Core 7 ? Debian ? Thanks a lot, for any suggestion -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

...make life easy. Therefore I would like to know from you, how can I solve this problem: Should I install the i386 version of R ? Should I install another flavour of Linux ? Which one ? Fedora Core 7 ? Debian ? Thanks a lot, for any suggestion -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

...na.rm = T) * 0.02 panel.abline(v = mean(x, na.rm = T) + mean(x, na.rm = T) * 0.02 }) but I cannot figure out how to shade the region included between the two lines. Is it possible, or I'm pretending too much? Thanks to all. Ottorino-Luca Pantani, Universit?? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta

...pts, saving data, code and so on. Consider the use of emacs + ESS + R. http://ess.r-project.org/ This will complicate things a little more, (A LOT !) but you will not regret the time spent in learning. Emacs will be useful in MANY other ways. -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/

Hi I have not understood very well how to realize, in limma package, the design (using factor in model.matrix) to insert in lmFit. I have an experiment with 4 groups (a,b,c,d) with 3 replicates for each-one and i have to compare a vs b; c vs d; ( a&c )vs (b&d). List Sample in pdata is like this: 1a 1c 1b 1d 2a 2c 2b 2d 3a 3c 3b 3d How can i do this design with matrix model? thanks

Dear all, A hopefully simple question: how do I round a series of values (held in an object) to the nearest 5? I've checked out trunc, round, floor and ceiling, but these appear to be more tailored towards rounding decimal places. Thanks, Steve _________________________________________________________________ icons.

...;p", as.character(round(p.value.diff, 3)), sep = "=")) } ## xyplot(x ~ d| a + b + c, data = df, layout = c(6, 2), strip = strip.custom(strip.names = TRUE, strip.levels =TRUE), panel = my.panel) -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Ubuntu 8.04.3 LTS -- GNU Emacs 23.0.60.1 (x86_64-pc-linux-gnu, GTK+ Version 2.12.9) ESS version 5.5 -- R 2.9.2

Dear R-users: I have some problems working with lme function, and i would be glad if anyone could help me. this kind of analysis i was used to do with PROC MIXED from SAS, but i would like to move to R, for many reasons... So, the problem is: Imagine the I have 3 factors: fact_A, fact_B and fact_C: The latter I would assume that is random, and the rest of them are fixed. Analysing the

...rgoStool) I also queried trellis.par.get by names(trellis.par.get()) but still I'm not able to figure out which are the parameters, if any, that control "pch" and "col" of the symbols. Any help is highly appreciated. -- Ottorino-Luca Pantani, Universit? di Firenze Dip. Scienza del Suolo e Nutrizione della Pianta P.zle Cascine 28 50144 Firenze Italia Tel 39 055 3288 202 (348 lab) Fax 39 055 333 273 OLPantani at unifi.it http://www4.unifi.it/dssnp/