Issue with producing rotated projection with contour

[moonbooks73]

As we've observed I can do a default projection (cyl) with the following code, but when introducing mapset with proj as "rotated" an error occurs. I expected a rotated projection to appear with contour plots and a title. The same issue also occurs withe the "ortho" projection/

>>> f=cf.read('cfplot_data/ggap.nc')[0]
>>> cfp.gopen()
>>> cfp.con(f.subspace(pressure=850), lines=False, title = "rotated", colorbar_position=[0.1, 0.1, 0.8, 0.02], colorbar_orientation='horizontal')
>>> cfp.gclose()
>>> cfp.gopen()
>>> cfp.mapset(proj="rotated")
>>> cfp.con(f.subspace(pressure=850), lines=False, title = "rotated", colorbar_position=[0.1, 0.1, 0.8, 0.02], colorbar_orientation='horizontal')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "/home/natalia/anaconda3/lib/python3.12/site-packages/cfplot/cfplot.py", line 1097, in con
    map_title(title)
  File "/home/natalia/anaconda3/lib/python3.12/site-packages/cfplot/cfplot.py", line 9014, in map_title
    plotvars.mymap.text(xpt, ypt, title, va='bottom',
                        ^^^
UnboundLocalError: cannot access local variable 'xpt' where it is not associated with a value

Environment

Using the main branch:

Platform: Linux-5.4.0-131-generic-x86_64-with-glibc2.31
HDF5 library: 1.12.1
netcdf library: 4.8.1
udunits2 library: /home/natalia/anaconda3/lib/libudunits2.so.0
esmpy/ESMF: not available
Python: 3.12.2
dask: 2024.5.0
netCDF4: 1.6.2
psutil: 5.9.0
packaging: 23.2
numpy: 1.26.4
scipy: 1.13.1
matplotlib: 3.8.4
cftime: 1.6.4
cfunits: 3.3.7
cfplot: 3.3.0
cfdm: 1.11.1.0
cf: 3.16.1

[moonbooks73]

The same issue also occurs with the "ortho" projection.

[sadielbartholomew]

Thanks Natalia for the report! I will look into it and for now we can find a workaround.