Cant print 'None' string in x axis in Scatter plot if first value

[ssjunior]

If the first value in x series is a string 'None' the plot is not rendered.

http://codepen.io/ssjunior/pen/qrBMNG

[etpinard]

That's intended behavior I'm afraid. On this line we explicitly skip string data item 'None'. That is, 'None' is essentially equivalent to null for plotly.js.

This is probably an artefact that we could 🔪 in v2. I suspect in the early days of plotly, the python API didn't convert None values to JSON nulls (cc @alexcjohnson).

[ssjunior]

Understood. Thanks for explaining.

The most strange is if the None is the second value the graph is rendered normally. This only happens if None is the first value. Take a look below.

http://codepen.io/ssjunior/pen/gmbMZY

In my opinion, does not make sense to have None is this condition. If you have a valid non empty string it should be rendered. FYI the Pie Chart render it normally.

if(typeof ai === 'string' && ai !== '' && ai !== 'None') curvecats++;

I think this condition is not being evaluated correctly too. What happens if ai !=== "" after the first value? By the same logic it will be rendered.

Best regards. :)

[ssjunior]

If the empty string is not the first value the plot is rendered as suspected. The condition as it is now is kind os useless. :)

http://codepen.io/ssjunior/pen/BWyzXj

[alexcjohnson]

Removing from v2, as I think we can solve this in a sufficiently backward-compatible way in #3070