Option to rotate y-axis tick labels or re-format it based on units

[astrochun]

I'm generating plots where the WCS from the FITS header is wavelength for the y-axis. Because the spacing is large enough, it would be a better use of space to rotate the tick labels by 90 deg. This is possible in matplotlib but not in aplpy.

If this is not possible, an alternative approach is to provide units and set the units for the tick marks. Thus, instead of having a tick mark labelled as 10000 Ang, it would be 1.0 micron.

Is either of these two options possible?

FYI: I'm using v1.1.1 of aplpy

[brewstronomy]

I'd like to second this request. Is there a hack-y way to accomplish this in the meantime?

[astrochun]

@lpbeale93: I have yet to find a way to do it.

[ashleythomasbarnes]

Putting this fix here, as I've just come across this myself... Nonetheless, it would be good have this functionality built in.

For version < 2 you could use:

 ax_ = fig.axes[0]
 for tick in ax_.get_yticklabels():
     tick.set_rotation(90)

For version > 2 you could use:

axes = fig.get_axes()
lat = axes[0].coords[1]
lat.ticklabels.set_rotation(90)

[FlaAmaral]

Putting this fix here, as I've just come across this myself... Nonetheless, it would be good have this functionality built in.

For version < 2 you could use:

 ax_ = fig.axes[0]
 for tick in ax_.get_yticklabels():
     tick.set_rotation(90)

For version > 2 you could use:

axes = fig.get_axes()
lat = axes[0].coords[1]
lat.ticklabels.set_rotation(90)

@ashleythomasbarnes sorry for the stupid question, but where does "coords" come from? I am getting an error "AttributeError: 'AxesSubplot' object has no attribute 'coords'". Thank you!!!

[ashleythomasbarnes]

How many axes are you using? Does axes = fig.get_axes()[0] return <WCSAxesSubplot:xlabel='RA (ICRS)', ylabel='Dec (ICRS)'> otherwise you may need to use lat = axes[1].coords[1] or lat = axes[2].coords[1] etc