search for: formaldehyd

Hi, I tried to do a multiple linear model from the example dataset Formaldehyde. However, the function lm() did not estimate the coefficient of the term carb^2. The same problem occurred with the (nlme)dataset Pixel with both function lme() and lm(). I am using the windows version of R 1.5.1 Lauri Mehtatalo The Formaldehyde example: > data(Formaldehyde) > lm(optde...

...()' for distribution details. R is a collaborative project with many contributors. Type `contributors()' for more information. Type `demo()' for some demos, `help()' for on-line help, or `help.start()' for a HTML browser interface to help. Type `q()' to quit R. > data(Formaldehyde) > Formaldehyde carb optden 1 0.1 0.086 2 0.3 0.269 3 0.5 0.446 4 0.6 0.538 5 0.7 0.626 6 0.9 0.782 > edit(Formaldehyde) # no problem here carb optden 1 0.1 0.086 2 0.3 0.269 3 0.5 0.446 4 0.6 0.538 5 0.7 0.626 6 0.9 0.782 > rownames(Formaldehyde) [1] &quo...

...R is a collaborative project with many contributors. > Type `contributors()' for more information. > > Type `demo()' for some demos, `help()' for on-line help, or > `help.start()' for a HTML browser interface to help. > Type `q()' to quit R. > > > data(Formaldehyde) > > Formaldehyde > carb optden > 1 0.1 0.086 > 2 0.3 0.269 > 3 0.5 0.446 > 4 0.6 0.538 > 5 0.7 0.626 > 6 0.9 0.782 > > edit(Formaldehyde) # no problem here > carb optden > 1 0.1 0.086 > 2 0.3 0.269 > 3 0.5 0.446 > 4 0.6 0...

Hi, I use lm or loess to make smoothing. After smoothing I need "Residual Standard Error" in my script. Could you please tell me how can I get this information? Thanks,

...st. The second part is relatively easy. The default method for "with" has body eval(substitute(expr), data, enclos = parent.frame()) and you just change this to eval(substitute(expr), eval(data$call$data), enclos = parent.frame()) So, for example > fm <- lm(optden ~ carb, Formaldehyde) > with.lm <- function(data, expr, ...) eval(substitute(expr), eval(data$call$data), enclos = parent.frame()) > with(fm, carb) [1] 0.1 0.3 0.5 0.6 0.7 0.9 However, I haven't been able to work out a clever way of using substitute to get the first part. I would like to be able to...

...started wondering if there is not some more sophisticated way of packaging these things. For example, how do people put in the meta information that appears in the right side of the data() output, as in: Data sets in package '.': NatAnnES2000 Data sets in package 'base': Formaldehyde Determination of Formaldehyde HairEyeColor Hair and Eye Color of Statistics Students ... Are there other attributes that I should specify if I want to package an .rda file for other users? An rda file created in this way will translate across platforms, won't it? pj...

Hello R users, I have been looking through Help files and Nabble list for the answers for these simple questions, but it seems to be fruitless. 1- in a data frame with two columns, x and y, how do I get the corresponding value of x to, let's say, the minimum value of the y column (min (data$y)) ? 2- how do I solve a simple equation? Considering the equation y= exp(-x)^12, I would like to find

...en Demand CO2 Carbon Dioxide uptake in grass plants ChickWeight Weight versus age of chicks on different diets DNase Elisa assay of DNase EuStockMarkets Daily Closing Prices of Major European Stock Indices, 1991-1998 Formaldehyde Determination of Formaldehyde HairEyeColor Hair and Eye Color of Statistics Students Harman23.cor Harman Example 2.3 Harman74.cor Harman Example 7.4 Indometh Pharmacokinetics of Indomethicin InsectSprays Effectiveness of Insect...

...tabular form, and currently used for the object, data and demo indices and `TITLE' and that's not required. On Tue, 22 Jan 2002 kleiweg@let.rug.nl wrote: > > When I do: > > > data() > > ... I get: > > Data sets in package `base': > > Formaldehyde Determination of Formaldehyde concentration > > [cut] > > women Heights and Weights of Women > > > Use `data(package = .packages(all.available = TRUE))' > to list the data sets in all *available* packages. > > > > Whe...

Greetings. Is there any way to get R to take a regression model object and draw a plot of the regression function? How about overlaying that plot over a scatterplot of the actual data? Thanks in advance for any help anyone can provide. Aaron ----- Aaron Solomon?? (??ben Saul Joseph??) ??Adelman E-mail??: ??adelmaas at musc.edu Web site??: ??http??://??people.musc.edu??/??~adelmaas??/??

As a java programmer, I'm having issue conceptualizing the following use case: Given an value, passed into a function, how do I pull out the lookup? Ie. A list of keys (key1, key2, key3) A list of values (val1,val2,val3) I want to write a function (or is there something built in?) such that Callit <- (thekey) { (magic happens here) Return value } Any ideas? Thanks a bunch!

...eck' * checking for file 'DSC2003/DESCRIPTION' ... OK * checking if this is a source package ... OK * Installing *source* package 'DSC2003' ... ** R ** data ** help >>> Building/Updating help pages for package 'DSC2003' Formats: text html latex example Formaldehyde text html latex example dsc2003 text html latex example * DONE (DSC2003) * DONE (INSTALL) * checking package directory ... OK * checking for sufficient/correct file permissions ... OK * checking DESCRIPTION Package field ... OK * c...

...eck' * checking for file 'DSC2003/DESCRIPTION' ... OK * checking if this is a source package ... OK * Installing *source* package 'DSC2003' ... ** R ** data ** help >>> Building/Updating help pages for package 'DSC2003' Formats: text html latex example Formaldehyde text html latex example dsc2003 text html latex example * DONE (DSC2003) * DONE (INSTALL) * checking package directory ... OK * checking for sufficient/correct file permissions ... OK * checking DESCRIPTION Package field ... OK * c...

...ase/R-ex/Exponential.R action: create D: file: /usr/local/lib/R/library/base/R-ex/Extract.R action: create D: file: /usr/local/lib/R/library/base/R-ex/Extremes.R action: create D: file: /usr/local/lib/R/library/base/R-ex/FDist.R action: create D: file: /usr/local/lib/R/library/base/R-ex/Formaldehyde.R action: create D: file: /usr/local/lib/R/library/base/R-ex/GammaDist.R action: create D: file: /usr/local/lib/R/library/base/R-ex/Geometric.R action: create D: file: /usr/local/lib/R/library/base/R-ex/HairEyeColor.R action: create D: file: /usr/local/lib/R/library/base/R-ex/Hyperboli...

...text html latex example Extract text html latex example Extremes text html latex example FDist text html latex example Foreign text html latex Formaldehyde text html latex example GammaDist text html latex example Geometric text html latex example HairEyeColor text html latex example Hershey text...