else If statement not working on shinyapps.io

[Sassire]

Greetings all,

I need help for an issue in shinyapps.io with else if statement.
This is my code :

req51<- data.frame(req5)
t<- nrow(req51)
x <- data.frame(classe=1:t, id=rep(1, t))

for (i in 1:t) {
if (req51[i,"Age"]<30) {x[i, "classe"] = "20-30"}
else if (req51[i,"Age"]<40) {x[i, "classe"] = "30-40"}
else if (req51[i,"Age"]<50) {x[i, "classe"] = "40-50"}
else {x[i, "classe"] = "50-60"}
}

When i run this locally it works well, but when i deploy the app on shinyapps.io i get the following error :

Warning: Error in if: missing value where TRUE/FALSE needed.

I dont really know what is going wrong.

Can somebody help please?

Thanks.

Sassire
...

[andresrcs]

We don't really have enough info to help you out. Could you post the content of your logs and ask this with a minimal REPRoducible EXample (reprex)? A reprex makes it much easier for others to understand your issue and figure out how to help.

Please have a look at this guide, to see how to create one for a shiny app

Shiny debugging and reprex guide

Shiny issues can be challenging to resolve relative to other problems with your code or statistical methods. Shiny apps are often large, complex projects with interacting files. When seeking help from others it is considered polite to: First, do your best to work through RStudio's debugging tools to diagnose your issue on your own. Often those shiny logs and tracebacks are useful to others trying to help out. Second, strive to minimize the effort required to replicate your issue. You can do this with a reproducible example ("reprex"). Shiny Debugging Errors in Shiny code can be difficult to track down. If you don't know where your problem is coming from, you can track it down with some o…

[Sassire]

Dear @andresrcs thank you for your reaction. I finally understood the issue. It comes from the use of IF statement inside the FOR loop. I was able to solve it by using the "IFELSE" statement instead. Thanks.

[mara]

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Thanks