numeric vector input?

[qians...@hotmail.com]

Hey guys,

I am trying to use a numeric vector as my input, it seems numericInput is unable to handle vectors, so anyone knows how to do this? Thank you and have a nice weekend!

Best,

Su

[Stéphane Laurent]

Hi,

Two solutions : 

 1) Use matrixInput() from the shinyIncubator package

 2) Use textInnput() and convert the text to a vector in server.R

[Stéphane Laurent]

Hi Su,

Please send your reply to the Shiny group.

- If you really want to enter raw R syntax in textInput(), use this:

> x <- "c(2,3)"

> eval(parse(text=x))

[1] 2 3

- I have another solution but it is on my other computer, please wait a minute

Hey Stephane,
Thanks for your help on this. I will try the shinyIncubator package solution later. I actually tried the second solution of yours yesterday, I put down sth like c(5,2) (or simply (5,2)), but the program recognize it as a character 'c(5,2)', so when I apply as.numeric() to it, it does not work out.
Su

[Stéphane Laurent]

Another way using textInput():

Use the following function:

numextractall <- function(string){ # http://stackoverflow.com/questions/19252663/extracting-decimal-numbers-from-a-string

  unlist(regmatches(string,gregexpr("[[:digit:]]+\\.*[[:digit:]]*",string)), use.names=FALSE)

} 

Then :

> x <- "0 1 2"

> y <- "0, 1, 2"

> as.numeric(numextractall(x))

[1] 0 1 2

> as.numeric(numextractall(y))

[1] 0 1 2

[qians...@hotmail.com]

Thank you Stephane, I really appreciate your help. Have wonderful day !

Su