Tooltip text not working when text is 0 (number)

Example that displays the error

I want to be able to get a value from the text property in the data object. I noticed that if the value is the number 0 it won’t be displayed in the plot.

          text: [0, 0, 0, 0, 0],
          hoverinfo: "x+text+name",

The code above will make the tooltip only show x and name. The text property won’t be visible.

All other values except 0 will render properly, as can be seen in the code example linked above. Also if all the numbers are strings they will be shown correctly.

I guess that there is a null-check somewhere that treats 0 as false and therefore won’t add it to the tooltip.

[dalle]

@alexcjohnson Did I create the PR correctly?

[alexcjohnson]

Thanks @stillesjo ! Interestingly we have a comment implying that we had addressed exactly this issue, so we’ll have to look at it. https://github.com/plotly/plotly.js/blob/dfb56d3a7b99ecf979365ed9b9c2c40747cdd915/src/traces/scatter/fill_hover_text.js#L38-L41 @dalle thanks, that would fix a related bug - display of the text alongside the markers. Add this to each of the traces in @stillesjo’s example:

mode: 'lines+markers+text',
textposition: 'top right'

and you’ll see the zeros get left out there too: