Data type 'category' not understood

[kwinkunks]

From a user:

When I try to use the Project.df() method on a project (from .Las), I get the error data type 'category' not understood referring to line 848 in curve.py.

• Python 3.9.7
• Welly 0.5.2rc0
• pandas 1.4.1
• numpy 1.20.3

[kwinkunks]

Complete report...

from welly import Project

p = Project.from_las('Log_Data/*.las')

p[3].df()

Results in:

---------------------------------------------------------------------------
TypeError                                 Traceback (most recent call last)
C:\Users\ROB~1.SEL\AppData\Local\Temp/ipykernel_35000/1532267160.py in <module>
----> 1 p[3].df()

~\Anaconda3\envs\welly2\lib\site-packages\welly\well.py in df(self, keys, basis, uwi, alias, rename_aliased)
    592             raise WellError(m)
    593 
--> 594         data = [self.get_curve(k, alias=alias).to_basis(basis).df for k in keys]
    595 
    596         if rename_aliased:

~\Anaconda3\envs\welly2\lib\site-packages\welly\well.py in <listcomp>(.0)
    592             raise WellError(m)
    593 
--> 594         data = [self.get_curve(k, alias=alias).to_basis(basis).df for k in keys]
    595 
    596         if rename_aliased:

~\Anaconda3\envs\welly2\lib\site-packages\welly\curve.py in to_basis(self, basis, start, stop, step, undefined, interp_kind)
    846         """
    847         # category data type or a string in data defaults to 'nearest'
--> 848         if self.df.dtypes[0] == 'category' or self.df.applymap(type).eq(str).any()[0]:
    849             interp_kind = 'nearest'
    850 

TypeError: data type 'category' not understood

But I think 60560f6 has fixed it.