Python matplotlib.dates.HourLocator() Examples

The following are 3 code examples of matplotlib.dates.HourLocator(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module matplotlib.dates , or try the search function .
Example #1
Source File: live_chart_utils.py    From catalyst with Apache License 2.0 6 votes vote down vote up 
def format_ax(ax):
    """
    Trying to assign reasonable parameters to the time axis.

    Parameters
    ----------
    ax:

    """
    # TODO: room for improvement
    ax.xaxis.set_major_locator(mdates.DayLocator(interval=1))
    ax.xaxis.set_major_formatter(fmt)

    locator = mdates.HourLocator(interval=4)
    locator.MAXTICKS = 5000
    ax.xaxis.set_minor_locator(locator)

    datemin = pd.Timestamp.utcnow()
    ax.set_xlim(datemin)

    ax.grid(True)
Example #2
Source File: report.py    From simglucose with MIT License 6 votes vote down vote up 
def ensemble_BG(BG, ax=None, plot_var=False, nstd=3):
    mean_curve = BG.transpose().mean()
    std_curve = BG.transpose().std()
    up_env = mean_curve + nstd * std_curve
    down_env = mean_curve - nstd * std_curve

    # t = BG.index.to_pydatetime()
    t = pd.to_datetime(BG.index)
    if ax is None:
        fig, ax = plt.subplots(1)
    if plot_var and not std_curve.isnull().all():
        ax.fill_between(
            t, up_env, down_env, alpha=0.5, label='+/- {0}*std'.format(nstd))
    for p in BG:
        ax.plot_date(
            t, BG[p], '-', color='grey', alpha=0.5, lw=0.5, label='_nolegend_')
    ax.plot(t, mean_curve, lw=2, label='Mean Curve')
    ax.xaxis.set_minor_locator(mdates.HourLocator(interval=3))
    ax.xaxis.set_minor_formatter(mdates.DateFormatter('%H:%M\n'))
    ax.xaxis.set_major_locator(mdates.DayLocator())
    ax.xaxis.set_major_formatter(mdates.DateFormatter('\n%b %d'))

    ax.axhline(70, c='green', linestyle='--', label='Hypoglycemia', lw=1)
    ax.axhline(180, c='red', linestyle='--', label='Hyperglycemia', lw=1)

    ax.set_xlim([t[0], t[-1]])
    ax.set_ylim([BG.min().min() - 10, BG.max().max() + 10])
    ax.legend()
    ax.set_ylabel('Blood Glucose (mg/dl)')
    #     fig.autofmt_xdate()
    return ax
Example #3
Source File: viz.py    From py-openaq with MIT License 4 votes vote down vote up 
def tsindex(ax):
    """
        Reset the axis parameters to look nice!
    """
    # Get dt in days
    dt = ax.get_xlim()[-1] - ax.get_xlim()[0]

    if dt <= 1./24.:   # less than one hour
        pass
    elif dt <= 1.:     # less than one day
        ax.xaxis.set_minor_locator( dates.HourLocator() )
        ax.xaxis.set_minor_formatter( dates.DateFormatter(""))

        ax.xaxis.set_major_locator( dates.HourLocator( interval=3))
        ax.xaxis.set_major_formatter( dates.DateFormatter("%-I %p"))
    elif dt <= 7.:      # less than one week
        ax.xaxis.set_minor_locator( dates.DayLocator())
        ax.xaxis.set_minor_formatter( dates.DateFormatter("%d"))

        ax.xaxis.set_major_locator( dates.DayLocator( bymonthday=[1, 8, 15, 22]) )
        ax.xaxis.set_major_formatter( dates.DateFormatter("\n%b\n%Y") )
    elif dt <= 14.:     # less than two weeks
        ax.xaxis.set_minor_locator( dates.DayLocator())
        ax.xaxis.set_minor_formatter( dates.DateFormatter("%d"))

        ax.xaxis.set_major_locator( dates.DayLocator( bymonthday=[1, 15]) )
        ax.xaxis.set_major_formatter( dates.DateFormatter("\n%b\n%Y") )
    elif dt <= 28.:     # less than four weeks
        ax.xaxis.set_minor_locator( dates.DayLocator())
        ax.xaxis.set_minor_formatter( dates.DateFormatter("%d"))

        ax.xaxis.set_major_locator( dates.MonthLocator() )
        ax.xaxis.set_major_formatter( dates.DateFormatter("\n%b\n%Y") )
    elif dt <= 4 * 30.: # less than four months
        ax.xaxis.set_minor_locator( dates.DayLocator( bymonthday=[1, 7, 14, 21] ))
        ax.xaxis.set_minor_formatter( dates.DateFormatter("%d"))

        ax.xaxis.set_major_locator( dates.MonthLocator())
        ax.xaxis.set_major_formatter( dates.DateFormatter("\n%b\n%Y") )
    else:
        ax.xaxis.set_minor_locator( dates.MonthLocator(interval=2) )
        ax.xaxis.set_minor_formatter( dates.DateFormatter("%b"))

        ax.xaxis.set_major_locator( dates.MonthLocator(bymonth=[1]) )
        ax.xaxis.set_major_formatter( dates.DateFormatter("\n%Y"))


    return ax