Recent content by trinker

Not a book but a text of sorts: https://www.linkedin.com/pulse/frequentists-fight-back-kevin-gray/ Wanted to get people's thoughts...

@jamesmartinn What are you thoughts on the interface for writing the functions? Did you like/dislike it? Was the approach simple? Could you generalize it to new situations?

@jamesmartinn Nice. Do you have the source code for this available that you'd be willing to share?

Thanks @Dason myppoints <- function(x, a = if(length(x) <= 10) 3/8 else 1/2) ((1:length(x)) - a)/(length(x) + (1-a)-a) par(mfrow = c(2, 1)) plot(qnorm(myppoints(x)), sort(x), xlim = c(-1.5, 1.5)) lines(qnorm(.25), ) qqnorm(x) qqline(x) Not sure yet why the adjustments but the paper...

My understanding of a qqplot was it was the sorted values for a variable on the y against the theoretical values from a normal (or whatever distribution) distribution on the x. We can get the y values from our sample and the x values from looking up the p value in a given distribution and...

https://github.com/GuangchuangYu/yyplot Not beautiful but clever: if (!require("pacman")) install.packages("pacman") pacman::p_load_current_gh('GuangchuangYu/yyplot') ggplot(mtcars, aes(x = mpg, y = hp)) + geom_cake()

Another approach if it's a diagonal matrix (off-diagonals are all zero): vv <- matrix(0, nrow=6, ncol=6, dimnames = lapply(1:2, function(i) c("EPA1", "EPA2", "EPA3", "EPA4", "EPA5", "EPA6")) ) diag(vv) <- c(2, 1, 5, 6, 9, 7) vv ## EPA1 EPA2 EPA3 EPA4 EPA5 EPA6 ## EPA1 2 0...

What you have is a nested list of lists. So yes that's one way to make a list. ## Your data a <-list(name = "James", Courses = c("Math", "Physics", "Chemistry")) b <- list (name = "Peter", Courses = c("English", "History", "Sociology")) Student_Data = list(a,b) You can access your Courses...

@Dason Yihui uses return like I do : https://yihui.name/en/2018/01/stop-early/

You can also set the missing values to NA when you read the data in. How did you get the data into R?

@quark I dig it...one small thing...when I hover over icons to figure out what they are the text comes up where the cursor is, making the text that pops up unreadable ....Though it's not the same for all computers I use

Yeah but to me the return is more readable. Plus they can get nested. There may be 3-5 of these if() return() lines in there. It helps to avoid a bunch of nested if/elses.

fun <- function(x, ...){ if (x < 5) return('Low') 'High' } fun(3) ## [1] "Low" fun(8) ## [1] "High"

I use it in an if statement to keep it one line rather than an else

A team at work saw this post on using MC for predicting a forcast of stories completed: http://scrumage.com/blog/2015/09/agile-project-forecasting-the-monte-carlo-method/ I have a series of questions as I know of Monte Carlo Simulation but have not used them. 1. Is the basic gist: Get mean and...