Array selection (isel & sel) in transforms?

[Dooruk]

I'm looking to plot a vertical transect.

For instance:
longitude(x)
depth(z)
temp(x,z)

Getting to these dimensions would require an additional EVA transform, something like isel or sel from xarray. Is this a functionality we think would be beneficial in EVA? I can take a stab at it.

Which would then look something like the following using one of the contour plots in EVA:
(following was created via pcolormesh(longitude, depth, temp, **kwargs))

Originally posted by @Dooruk in #220 (comment)