Manually specify ticks

HoloViews
1

Hi all, I have a very strange behavior with manual setting ticks:
yticks = list(zip(np.arange(NLINES), 'I'm a tick'))

Then I try to set them in options:

hv.Path().opts(yticks=yticks) which results in an error

keys must be a string

When I copy & paste the content of yticks list
hv.Path().opts(yticks=[(0, 'I'm a tick'), (...)])
everything works fine. I guess either it’s a bug or I’m the bug with handling Python types…

Any help appreciated!

2

Bit confused here, this is not valid syntax:

yticks = list(zip(np.arange(NLINES), 'I'm a tick')

If you fix the quotes, you get this:

yticks = list(zip(np.arange(10), "I'm a tick"))
yticks

[(0, 'I'),
 (1, "'"),
 (2, 'm'),
 (3, ' '),
 (4, 'a'),
 (5, ' '),
 (6, 't'),
 (7, 'i'),
 (8, 'c'),
 (9, 'k')]

That said I can reproduce your issue. The problem is that np.arange(10) returns numpy int types not regular int types. If you replace it with regular range it all works fine: yticks = list(zip(range(NLINES), ['I'm a tick']*NLINES))

3

Perfect! Thanks for the correction, had it right in my code, but wrongly copied manually here… BTW, I do the zip because in m code I do not have a single string, but a list of strings instead of “I’m a tick”.