Python matplotlib.dates.WeekdayLocator() Examples

def apply_date_formatting_to_axis(ax):
        """ Format x-axis of input plot to a readable date format """
        ax.xaxis.set_minor_locator(dates.WeekdayLocator(byweekday=(0), interval=1))
        ax.xaxis.set_minor_formatter(dates.DateFormatter('%d\n%a'))
        ax.xaxis.grid(True, which="minor")
        ax.yaxis.grid()
        ax.xaxis.set_major_locator(dates.MonthLocator())
        ax.xaxis.set_major_formatter(dates.DateFormatter('\n\n\n%b\n%Y'))
        return ax 

def PlotScalerDateAdjust(minDate:datetime, maxDate:datetime, ax):
	if type(minDate)==str:
		daysInGraph = DateDiffDays(minDate,maxDate)
	else:
		daysInGraph = (maxDate-minDate).days
	if daysInGraph >= 365*3:
		majorlocator =  mdates.YearLocator()
		minorLocator = mdates.MonthLocator()
		majorFormatter = mdates.DateFormatter('%m/%d/%Y')
	elif daysInGraph >= 365:
		majorlocator =  mdates.MonthLocator()
		minorLocator = mdates.WeekdayLocator()
		majorFormatter = mdates.DateFormatter('%m/%d/%Y')
	elif daysInGraph < 90:
		majorlocator =  mdates.DayLocator()
		minorLocator = mdates.DayLocator()
		majorFormatter =  mdates.DateFormatter('%m/%d/%Y')
	else:
		majorlocator =  mdates.WeekdayLocator()
		minorLocator = mdates.DayLocator()
		majorFormatter =  mdates.DateFormatter('%m/%d/%Y')
	ax.xaxis.set_major_locator(majorlocator)
	ax.xaxis.set_major_formatter(majorFormatter)
	ax.xaxis.set_minor_locator(minorLocator)
	#ax.xaxis.set_minor_formatter(daysFmt)
	ax.set_xlim(minDate, maxDate) 

def getDatasForOneRouteForOneDepartureDate(route, departureDate):
    X = getOneRouteData(datas, route)
    minDeparture = np.amin(X[:,8])
    maxDeparture = np.amax(X[:,8])
    print minDeparture
    print maxDeparture

    # get specific departure date datas
    X = X[np.where(X[:, 8]==departureDate)[0], :]

    # get the x values
    xaxis = X[:,9] # observed date state
    print xaxis
    xaxis = departureDate-1-xaxis
    print xaxis

    tmp = xaxis
    startdate = "20151109"
    xaxis = [pd.to_datetime(startdate) + pd.DateOffset(days=state) for state in tmp]
    print xaxis

    # get the y values
    yaxis = X[:,12]


    # every monday
    mondays = WeekdayLocator(MONDAY)

    # every 3rd month
    months = MonthLocator(range(1, 13), bymonthday=1, interval=01)
    days = WeekdayLocator(byweekday=1, interval=2)
    monthsFmt = DateFormatter("%b. %d, %Y")

    fig, ax = plt.subplots()
    ax.plot_date(xaxis, yaxis, 'r--')
    ax.plot_date(xaxis, yaxis, 'bo')
    ax.xaxis.set_major_locator(days)
    ax.xaxis.set_major_formatter(monthsFmt)
    #ax.xaxis.set_minor_locator(mondays)
    ax.autoscale_view()
    #ax.xaxis.grid(False, 'major')
    #ax.xaxis.grid(True, 'minor')
    ax.grid(True)
    plt.xlabel('Date')
    plt.ylabel('Price in Euro')

    fig.autofmt_xdate()
    plt.show()

    """
    # plot
    line1, = plt.plot(xaxis, yaxis, 'r--')
    line2, = plt.plot(xaxis, yaxis, 'bo')
    #plt.legend([line2], ["Price"])
    plt.xlabel('States')
    plt.ylabel('Price in Euro')
    plt.show()
    """ 

def plot_backtest(config, algos, labels=None):
    """
    @:param config: config dictionary
    @:param algos: list of strings representing the name of algorithms or index of pgportfolio result
    """
    results = []
    for i, algo in enumerate(algos):
        if algo.isdigit():
            results.append(np.cumprod(_load_from_summary(algo, config)))
            logging.info("load index "+algo+" from csv file")
        else:
            logging.info("start executing "+algo)
            results.append(np.cumprod(execute_backtest(algo, config)))
            logging.info("finish executing "+algo)

    start, end = _extract_test(config)
    timestamps = np.linspace(start, end, len(results[0]))
    dates = [datetime.datetime.fromtimestamp(int(ts)-int(ts)%config["input"]["global_period"])
             for ts in timestamps]

    weeks = mdates.WeekdayLocator()
    days = mdates.DayLocator()

    rc("font", **{"family": "sans-serif", "sans-serif": ["Helvetica"],
                  "size": 8})

    """
    styles = [("-", None), ("--", None), ("", "+"), (":", None),
              ("", "o"), ("", "v"), ("", "*")]
    """
    fig, ax = plt.subplots()
    fig.set_size_inches(9, 5)
    for i, pvs in enumerate(results):
        if len(labels) > i:
            label = labels[i]
        else:
            label = NAMES[algos[i]]
        ax.semilogy(dates, pvs, linewidth=1, label=label)
        #ax.plot(dates, pvs, linewidth=1, label=label)

    plt.ylabel("portfolio value $p_t/p_0$", fontsize=12)
    plt.xlabel("time", fontsize=12)
    xfmt = mdates.DateFormatter("%m-%d %H:%M")
    ax.xaxis.set_major_locator(weeks)
    ax.xaxis.set_minor_locator(days)
    datemin = dates[0]
    datemax = dates[-1]
    ax.set_xlim(datemin, datemax)

    ax.xaxis.set_major_formatter(xfmt)
    plt.grid(True)
    plt.tight_layout()
    ax.legend(loc="upper left", prop={"size":10})
    fig.autofmt_xdate()
    plt.savefig("result.eps", bbox_inches='tight',
                pad_inches=0)
    plt.show()