Counts need to be strings for histogram to work

A quirk I found today: count values need to be strings in order to be counted as numbers when inside a histogram.

fruits = c("Apples","Apples","Apples","Oranges", "Bananas")
counts = c(5,10,3,10,5)

Doesn't work:

plot_ly(y=counts, 
        x=fruits, 
        histfunc='sum', 
        type = "histogram") %>% 
  layout(yaxis=list(type='linear'))

Does work:

plot_ly(y=as.character(counts), 
        x=fruits, 
        histfunc='sum', 
        type = "histogram") %>% 
  layout(yaxis=list(type='linear'))

まず、issue にある2つの plot_ly ヒストグラム例を再現し、数値の counts と as.character(counts) を比較します。histfunc='sum' のヒストグラム処理を追跡し、数値の counts が異なる扱いを受ける箇所を特定します。数値の counts が、文字値への変換を必要とせずに期待どおりの同じヒストグラムを生成すれば完了です。