R闪亮滑块增量

Question

Trying to setup a slider bar range from 0.5 - 999.5 with increments of 1 such that the range of values that it can take on is 0.5, 1.5, 2.5 ... 999.5 . My problem is that when I use the the slider from the code below, I get values including whole integer 1, 2, 3, 4...etc I have tried changing the steps to 0.5 but then I get, 1, 1.5, 2, 2.5 ...etc. Any ideas?

column(4,
         fileInput("pbs", label = ("PBS File input")),
         sliderInput("size", 
                     label = ("Size Range Selection"), 
                     min = 0.5, 
                     max = 999.5, 
                     value = c(0.5,999.5),
                     step = 1,
                    round = F

         )

Answer 1

So this is not the greatest, but it will work:

In your ui :

  sliderInput("size", 
                     label = ("Size Range Selection"), 
                     min = 0, 
                     max = 999, 
                     value = c(0,999),
                     step = 1,
                    round = F,
                    post=".5"
         )

This will show a slider that goes from 0 to 999, but it adds ".5" to the labels so it will look like 0.5 to 999.5.

Then, in your server , you will have to add .5 to each of the values from the slider before using the numbers.