Hi,

I'm trying to use phylocanvas with shiny but each time I change a parameter and redraw the plot, it renders it as a new plot below the previous one (instead of replacing it).

require(shiny)
require(phylocanvas)
require(ape)

ui <- fluidPage(
  sidebarLayout(
    sidebarPanel(
      sliderInput("nodes_in",
                  "Number of nodes",
                  min = 1, max = 50, value = 30)
    ),
    mainPanel(
      phylocanvasOutput("phy_test")
    )
  )
)

server <- function(input, output) {
  output$phy_test <- renderPhylocanvas({ #env = parent.frame(1), quoted = T
    tree <- rtree(n = input$nodes_in)
    phycanv <- phylocanvas(tree)
    phycanv
  })
}

shinyApp(ui = ui, server = server)

// tre is the phylocanvas JS object
tre.getSelectedNodeIds()

API here:

http://phylocanvas.org/docs/api/Tooltip.html

a poorly formatted tree string will be correctly passed to the JS code but no tree will be drawn.

semicolons cause problems - other characters as well?

Hello Zachcp.
I found the following problem while using your package.

**> TTT <- phylocanvas(test_tree2, treetype = "hierarchical", nodestyles = 2,
nodesize = 20, textsize = 30, linewidth = 2, showlabels = TRUE,
alignlabels = TRUE, showhistory = FALSE, showcontextmenu = TRUE,
showscalebar = TRUE, width = "100%", height = "800px", elementId = NULL)

htmlwidgets::saveWidget(as_widget(TTT),` "tttest7.html")**

The created html completely created the tree I wanted.
If you right-click the generated html file, you can use the following functions.
Among the features, I really liked the feature called "Export as Image", and when I used it, I was a little sad.
The downloaded image was painted very dark, showing the tree slightly darker in it.

I know it's been 5 years since you wrote the script.
If you see this article, please reply to see if you can help with this part.
Thanks in advance for your advice.