Highlight a bar with input in a ggplot / renderPlotly

[Carinelle]

Hi,

I have as output in R shiny a ggplot / geom bar.

I would like to highlight a bar when the user choose an input corresponding (meaning he choose a modality and the corresponding bar changes color)

I try to figure out for few days but I can't get.

This is UI :

checkboxGroupInput(inputId = "chauffage", 
                                              label = "Votre mode de chauffage :",
                                              choices = list("électrique"=1, "gaz naturel individuel"=2, "gaz naturel collectif"=3, 
                                                          "charbon"=4, "fioul domestique collectif"=5, "fioul domestique individuel"=6,
                                                          "GPL"=7, "réseau de chaleur"=8))),

box(id = "res2", title = "Estimer le chauffage :", 
                       status = "success", solidHeader = FALSE, collapsible = FALSE, 
                       width = NULL, 
                       plotlyOutput("graph_chauffage"))    

and server :

output$graph_chauffage <- renderPlotly ({

    cols <- c("électrique"= "#e72f3f", "gaz naturel individuel"="#e72f3f", "gaz naturel collectif"= "#e72f3f", "charbon"="#e72f3f",
              "fioul domestique individuel"="#e72f3f","GPL"=  "#e72f3f", "réseau de chaleur"="#e72f3f", "fioul domestique collectif"="#e72f3f")

    cols['input$chauffage'] <- "#9184be"


    g <- ggplot(periode(), aes(x = type_chauffage, y = chauffage_en_kWh_par_logement, fill=type_chauffage)) +
      geom_bar( stat = "identity") +
      xlab("Type de chauffage" ) + ylab("Consommation énergétique en kWh/m²") +
      scale_fill_manual(values=cols)+
      theme(axis.text.x = element_text(angle = 45, hjust = 1),panel.background = element_rect(fill = "transparent"), legend.position = "none")+
      geom_text(aes(label=chauffage_en_euro),vjust=1.6,size=3.5, color = "navy")
      theme_minimal()

    ggplotly(g) %>%
      config(displaylogo = FALSE, collaborate = FALSE,
             displayModeBar = FALSE)
  })

Thanks for your help !

[nirgrahamuk]

Could you format this into a reproducible example? That is a set of code that folks can easily get up and running to replicate your issue? Currently, this is only part of a shiny app.

IF you aren't familiar with best practices for shiny reprexes, check out

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…

This will make it easier for folks to replicate your issue and offer suggestions to solve it.