use :z for heatmap data property?

[ssfrr]

I generally think of heatmap and surface as being closely-related, so I figured I could update the data of a heatmap with hm[:z] = newdata, but apparently it wants hm[:heatmap] = newdata. Do you think :z might be a better property name for that, to match surface?

[SimonDanisch]

I just went with the names that make the most sense to me - :z is absurd to me :D But I can also see, how it makes more sense in a data oriented (plotting) world, were x,y,z just enumerates dimensions, and not THE 3 spatial dimensions.
I don't have any strong preferences for the name and will just go with what most people feel comfortable with in the final version :)

[mkborregaard]

To me @ssfrr 's idea is completely intuitive as well :-)

[ssfrr]

AFAICT heatmap property is now :color, which seems good to me, as that's the property being mapped to.