Hello List,
Does anybody know of any plans to include support for the new datetime64 data type in numpy? If this is the new numpy standard for doing dates and times, it would be great if it would work with plot_date, for example.
Just wondering (but boy, would I do a little dance when all this datetime stuff is fully operational and integrated),
Mark
Should be fairly straightforward to write a converter. Just follow
the example of DateConverter in matplotlib.dates
:https://github.com/matplotlib/matplotlib/blob/master/lib/matplotlib/dates.py:
class DateConverter(units.ConversionInterface):
"""
Converter for datetime.date and datetime.datetime data,
or for date/time data represented as it would be converted
by :func:`date2num`.
The 'unit' tag for such data is None or a tzinfo instance.
"""
@staticmethod
def axisinfo(unit, axis):
"""
Return the :class:`~matplotlib.units.AxisInfo` for *unit*.
*unit* is a tzinfo instance or None.
The *axis* argument is required but not used.
"""
tz = unit
majloc = AutoDateLocator(tz=tz)
majfmt = AutoDateFormatter(majloc, tz=tz)
datemin = datetime.date(2000, 1, 1)
datemax = datetime.date(2010, 1, 1)
return units.AxisInfo( majloc=majloc, majfmt=majfmt, label='',
default_limits=(datemin, datemax))
@staticmethod
def convert(value, unit, axis):
"""
If *value* is not already a number or sequence of numbers,
convert it with :func:`date2num`.
The *unit* and *axis* arguments are not used.
"""
if units.ConversionInterface.is_numlike(value):
return value
return date2num(value)
@staticmethod
def default_units(x, axis):
'Return the tzinfo instance of *x* or of its first element, or None'
try:
x = x[0]
except (TypeError, IndexError):
pass
try:
return x.tzinfo
except AttributeError:
pass
return None
units.registry[datetime.date] = DateConverter()
units.registry[datetime.datetime] = DateConverter()
On Mon, Aug 29, 2011 at 2:56 PM, Mark Bakker <markbak@...287...> wrote:
Hello List,
Does anybody know of any plans to include support for the new datetime64
data type in numpy? If this is the new numpy standard for doing dates and
times, it would be great if it would work with plot_date, for example.Just wondering (but boy, would I do a little dance when all this datetime
stuff is fully operational and integrated),