how to update the output dataframe from function depending on the UI user input

General
,
1

Dear All,
how to update the output data.frame "DF" values depending on the user input from shiny. so I want

  1. user to import values of Q1, Q2
  2. run the "mod0= function (Q1,Q2)
  3. result data.frame "C"
  4. how to make the new "DF" data.frame values update/react to the Q1,Q2 new values from shiny ui?

here is the code:
in ui.R I have:
numericInput("Q1", "Parking ", value= 1.2, min = 0, max = 1, step = 0.1),
numericInput("Q2", "ratio", value = 0.5,min = 0, max = 1, step = 0.1)

in server.R
I have:

mod0 = function(Q1,Q2){ #where Q1 and Q2 are numeric input in the shiny app ui

A= Q1+2
B=Q2+A
C <- data.frame(A,B)

return (C)
}

DF <- mod0(1,2)
DF
#> A B
#> 1 3 5
my question is how to update the DF values with the new values from shiny numeric input user interface?

I would really appreciate your help
Best Regards
Ahmed Ali
PhD candidate
Chung Ang University

2

I solved this problem by calling the C dataframe from the output function without giving values to mod0(1,2) as following

output$map <- renderLeaflet({
Q1 <- input$Q1
Q2 <- input$Q2

data.frame (mod0(Q1,Q2))
DF<- data.frame (mod0(Q1,Q2))

the user input of Q1 and Q2 in shiny directly update DF values
the process solved

  1. user to import values of Q1, Q2
  2. run the "mod0= function (Q1,Q2)
  3. result data.frame "C" #return(C)
    4.reactive "DF" data.frame values update/react to the Q1,Q2 new values from shiny ui

hope that helps you guys in the future

3

Hi @ahmedshingaly,

could you please mark this as solved even if it is your own solution.

Thanks

1 Like
4

This topic was automatically closed 7 days after the last reply. New replies are no longer allowed.