John Hunter wrote:
> The use case (and we can debate whether this is worth the extra overhead)
>
> ax.plot(inches)
> ax.set_xlim(cms)
I'll put my two cents into that debate:
My first thought is: wow! that is putting WAY too much into a plotting
routine!
My second thought is: on the other hand, that is very cool.
If it's going to be done, I think it really shouldn't be too MPL
specific -- it should be built on a good (and hopefully eventually
widely used) unit-array system, perhaps like Darren Dale's Quantities
package (there are quite a few other that should be looked at also).
What that means is that the first step is to get that package complete
and robust. Using it for this kind of MPL functionality may be a good
way to put it to the test.
In between, with a good Quantities package, it's not that big a deal to
put the unit conversion in the hands of user code. The user code would
simple need to be something like:
ax.plot(values.rescale('cm')
ax.set_xlim(limits.rescale('cm'))
a bit klunkier, but very clear. Explicit is better than implicit...
> ax.plot(cms)
>
> the first line would be updated to cm and both would be plotted in cm.
this is a little two implicit for me -- I'd rather specify the units
explicitly, rather than have the last data added determine it for me.
ax.set_xunit('cm')
I'd probably have it default to the first unit used.
-Chris
--
Christopher Barker, Ph.D.
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