Error: argument 'x' must be numeric

[Iasmim Louriene]

Hello guys, I'm trying to create a histogram of density and I'm having the error: argument 'x' must be numeric. I tried to use (as.numeric(input$d)) instead of just d but got the same error. Does anyone know how to solve this?

output$hist <- renderPlot({

input$action

if(is.null(input$action))
return(NULL)

else

isolate({

trees3 <- FindTreesCHM(chm(), (as.numeric(input$fws)), (as.numeric(input$minht)))
d <- density(trees3["height"])
plot(d, xlab = "Height", ylab = "Density", main = "")
polygon((as.numeric(input$d)), col = "darkseagreen")

})
})

Thanks a lot! :)

[Joe Cheng]

I'd call browser() just inside the isolate(), and step through the calculation one line at a time to see whether d and other variables are what you expect. And when you figure it out, remove the browser() call.

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[Iasmim Louriene]

Thanks Joe!