Custom format for the crosshair mark?

[mbostock]

The crosshair mark doesn’t currently provide an option to control how the values are formatted. The text channel in constructed using an initializer. Maybe it needs a format option, but we’d need separate options for x and y?

[Hvass-Labs]

Same problem for the tip / pointer. In my case I would just like it to use the tickFormat I have already set for the given axis. Thanks!

[sk31park]

I want format option.
Because I want change date format like 'YYYY-MM-DD hh:mm' in crosshair X label..

[JakeShirley]

I would love it, as I am trying to make my charts have relative time scales with a custom tick format and this crosshair label is just silly compared to it

[fernhaven]

I would like to be able to apply a format to the crosshair text for x and y so that the text that shows up with the crosshair matches the formatted labels on the axes.

[gvanhorne]

Are there any examples of implementing a custom cross hair with the pointer transform and text mark as suggested by the docs? I've been searching around and coming up empty.