similar to: Math expression with object to evaluate

Displaying 20 results from an estimated 20000 matches similar to: "Math expression with object to evaluate"

2010 Jan 31
3
combining data frames in a list - how do I add breaks?
I'm a week-old R user, and have become stuck trying to create usable CSV outputs for post-processing. I am using the package Rioja, which provides small datasets of results. I am running several analyses in a loop and iteratively adding the results to a *list* ("combined"). Within each iteration I use the following: > combined[[i]] <- performance(fit) With two iterations I
2011 Oct 06
2
Titles changing when a plot is redrawn
I ran into a problem with titles on graphs. I wanted a graph with multiple subplots, with each having a title that involved both a Greek letter and an identifier for each graph. Below is a simplified version of code to do this. The graph appears fine, with the first graph having "i=1" in the title, and the second graph having "i=2" in the title. However, when I resize the
2013 Apr 01
3
expression
Hi all, I´m using titt<- expression(paste("R con ventanas de 200 ", italic(datos))) And it works properly on a plot(...,main=titt,..) But if I want to add an improvement to avoid typing n on the plot so that n<-200 titt<- expression(paste("R con ventanas de ",n, italic(datos))) It doesn´t recognize that n is a "variable" and adds "n" letter
2010 Nov 26
1
How to use expression(italic()) in a "vectorized" way (within a function)?
Dear expeRts, I would like to use expression() for creating labels in a splom, as shown in the first minimal example below. Is there any way I can simplify having to write "expression(italic(...))" several times? The second example is what I tried so far, but I can't manage to get italic() to work. Moreover, it still seems bulky... Cheers, Marius ## minimal example (working but
2009 Nov 03
1
random text added to names (bug with 2.10.0?)
I'm using 2.10.0 on Linux (64 bit), and I just noticed that random numbers are occasionally added to the text of names in vectors. It's happened to me in two separate, long-running R sessions, but I can't find a way to reproduce it in a smaller setting. The code I'm using is > diag.gam.2 <- mdl.run.diag(fit.gam.2, ds.valid) > diag.gam.2 rmse mdae.1413751
2005 Jun 22
1
How to use expression in label with xYplot
Dear R-List, I want to use the label function (from Hmisc library) to allow for the names of my isotopes. library(Hmisc) library(lattice) library(grid) num <- c("78","137","129m") nom <- c("Ge","Cs","Te") df <- data.frame(GE78=seq(nom),CS137=seq(nom),TE129m=seq(nom)) if I use this function to create the labels : lab <-
2011 Feb 08
1
Mixed font type in plot title
Hello useRs, I'm trying to put italics and regular font into a title and am having some trouble. The title I would like is " /Q. marilandica/ Volume ". If I use main=bquote(italic( "Q. marilandica ", " volume")) I get just " Q. marilandica " in italics in the title. If i use main=bquote(italic( "Q. marilandica ,) volume") I get "
2011 Mar 31
1
Italicized title from index
Hi all! I've written a handy script that uses a for loop to allow me to generate a large number of figures and statistical outputs for a large dataset. I am using indexing to retrieve a species name for the title of my graphs- which worked fine. However, I need to italicize these species names. I originally used the paste function, and had no problems with indexing: *main=paste("Yield
2010 Jan 25
3
Paste expression in graph title
This was my initial attempt at creating a title on a graph of the R squared value: x<-rnorm(10) y<-rnorm(10) plot(x,y, main=paste(expression(R^2)," = ",round(summary(lm(y~ x))$r.squared, digits=3), sep="")) I've read various other posts that say expression needs to be taken outside the paste, but I can't seem to get it work as the following fails plot(x,y,
2013 Apr 25
2
Loop for main title in a plot
Hi all, I have a problem in including my plot in a loop. Here is a simple example for one plot: # Plot simple graph with super- and subscript a<-c(1,2,3,4) b<-c(1,2,3,4) plot(x=a,y=b, ylab=expression(paste("Apple"["P"])), xlab=expression(paste("Banana"^"th")),
2011 Mar 10
1
3 dimensional MDS plots
Hi, I am trying to create 3 mds plots: one with axis 1 vs axis 2, one with axis 2 vs axis 3, and one with axis 1 vs axis 3. When inputting my code, I only end up with one diagram and when inputting mdsg.mds$dims, the program returns 2 for 2 dimensions. How can I create the other two plots? Any help would be greatly appreciated, Calla Carbone The table I use is number of each taxa on each
2011 Feb 20
3
Partial italic in graph titles when looping
Dear all, I have a rather complicated problem. I am trying to loop through making graphs, so that the graph-making process is fully automated. For each graph, I'd like to make sure the corresponding title is formatted properly. The titles will be a combination of a gene name and numerical position within the gene. The gene name should be italic-bold, whereas the gene position should be
2010 Feb 14
3
evaluate variable within expression - how?
Ein eingebundener Text mit undefiniertem Zeichensatz wurde abgetrennt. Name: nicht verf?gbar URL: <https://stat.ethz.ch/pipermail/r-help/attachments/20100214/4b41a017/attachment.pl>
2012 Jan 30
2
Variable selection based on both training and testing data
Dear all, The variable selection in regression is usually determined by the training data using AIC or F value, such as stepAIC. Is there some R package that can consider both the training and test dataset? For example, I have two separate training data and test data. Firstly, a regression model is obtained by using training data, and then this model is tested by using test data. This process
2017 Jul 15
2
One Dimensional Monte Carlo Simulation
Further to my email below, I have just realised that I forgot to include the specification of L and R. Hence, the code needs to include the following additional lines at the start;- L<-7.5e6 R<-2.5e6 Apologies for any confusion caused! Best regards, Tony > On 12 Jul 2017, at 10:03 AM, HUL-Anthony Egerton <aegerton at huntingtonunderwriting.com> wrote: > > I am trying
2005 Jun 06
2
How to vectorize
Dear R-List, I would like to write nicely the names of some isotopes on a plot. The code bellow works fine. plot(1:10,1:10) text(c(2,4,8),c(2,4,8),labels=c(expression(italic(phantom(0)^{78}*Ge)), expression(italic(phantom(0)^{137}*Cs)), expression(italic(phantom(0)^{129*m}*Te))), cex=3 ) But, since I have a lot of
2005 Jun 06
2
How to vectorize
Dear R-List, I would like to write nicely the names of some isotopes on a plot. The code bellow works fine. plot(1:10,1:10) text(c(2,4,8),c(2,4,8),labels=c(expression(italic(phantom(0)^{78}*Ge)), expression(italic(phantom(0)^{137}*Cs)), expression(italic(phantom(0)^{129*m}*Te))), cex=3 ) But, since I have a lot of
2009 Mar 11
2
Combining math and variables in expression
I am trying to get the following line in a plot margin using mtext: 100% Area = 120.000 km^2 Where I intend that "100% Area =" is text, 120.000 is a number that varies according to different data, and km^2 should be a neat km-with-superscript-2. The expression function fails me, since it apparently cannot coerce an expression when a variable is involved. In the R help file there is
2004 Mar 20
9
Operating on windows of data
I have a data set that is comprised of, for simplicity, a vector of numbers that I want to march across in overlapping windows of say 10 values each, computing a couple of values for each window. Is there a vectorized way to do this, or do I truly need to resort to looping--I think so? Any other clever thoughts? Thanks, Sean [[alternative HTML version deleted]]
2009 Aug 12
2
Plotting sigma symbol with unicode and turning into pdf
Paul, You solution worked out really well when I ran my code in R. However, when I try to turn the plot into a pdf, the unicode string no longer seems to function and instead of the sigma symbol there are just two periods (See example code below). The following is the code working in the R environment just like I want it to look: set.seed(1) Data=rnorm(100,sd=10000) plot(density(Data))