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0 votes
in BI by (17.6k points)

I have TOTAL as a calculated field on Tableau, which is further connected to R studio to create outputs through R

The R code has a function which is returning a bunch of 100 and 50 in a function passing .arg from Tableau, and these number will change if the parameter changes.

Calculated Field: TOTAL :

    numbers <- function(a,b,c,parameter){
        a <- as.numeric(a)
        b <- as.numeric(b)
        c <- as.numeric(c)
        parameter <- as.numeric(parameter)
        al = ifelse(a > ((parameter * b) + b) | a < (c - (parameter * c)),'100','50')
", SUM([A]),SUM([B]),SUM([C]),[PARAMETER])

Now, once I visualize the result (in a Pie Chart), I am not able to get the how many 100's or how many 50's are in there, but it is dividing the number proportion properly.

TOTAL result in Pie Chart TOTAL result in Pie Chart

Obviously the 100 in the first picture means one 100 of all the 100's that the output has, but I'd like to know the total of 100's and 50's

I tried to use COUNT over the TOTAL field, but it gave me an error that said TOTAL is already an aggregate function and it cannot be further aggregated.

Can someone help me to resolve this?

1 Answer

0 votes
by (47.2k points)

Create two calculated fields one for 100's and other for 50's

if Total = 100

then 1 

else 0


For counting 50's

if total=50

then 1

else 0


Finally take the running sum for both the calculated fields and add both the formulas in tool tip

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