Linear scale with one value generates no tick.

[kanitw]

d3.scaleLinear().domain([4,4]).range([0,100]).ticks()

produces

[]

as a result, an axis from this scale would have no tick, which would be quite confusing for users

It might be better to generate a single tick and place items at the midpoint of the range rather than the minimum point just like what Tableau does:

[mbostock]

Fixed in d3-array@1.2.1. Thanks for the report!

[kanitw]

cc: @jheer

[jheer]

The fix in d3-array 1.2.1 does indeed add tick marks for singular domains. Thanks!

The report above also included a request for having singular domain values map to the middle of the scale range rather than the start of the range. Is there interest in supporting this aspect as well, or should we assume that the D3 scale convention will not change? Thanks again.

[mbostock]

Can you file a separate issue? I think that’s doable but it is a bigger change.

[mbostock]

Filed as #117.

[mbostock]

This separate issue will be fixed in #156 d3-scale 2.2.