Setting names and labels

[nsmith-]

How do I set a name or label for an axis of an already created histogram?
I tried

h.axes[0].name = "blah"

but that did not work

[henryiii]

Labels should be settable that way. Names are read only since they are required to be unique in a histogram and changing them later could break that.

[nsmith-]

Would it be possible to create a copy of a histogram with a renamed axis?

[henryiii]

You can always do h_new[...] = h.view(flow=True) if the axes sizes match.

[henryiii]

You can do

ax._ax.metadata["name"] = value

If you know what you are doing. Maybe setting them all at once via the AxesTuple could be allowed?

[nsmith-]

Thanks, this is really just to get around forgetting to put a name when I first made the histogram. Next time it will have a name so a hacky workaround is fine.

[kdlong]

I have a similar use case: I want to clone an axis while modifying its name. Is the suggested way to do this then

ax_new = copy.deepcopy(ax_old)
ax_new._ax.metadata["name"] = "newname"

I was looking for something like

ax_new = type(ax_old)(ax_old, name="new name")

or some variant but there is no copy constructor (or I don't know how to reproduce the copy constructor behaviour), and I don't particularly want to have separate constructor calls for the different axis types.