2012-10-12 18 views
5

我試圖在x軸上設置日期刻度標籤,僅限給定點。例如,如果我有日期時間的對x值軸如何在x軸上設置日期刻度標籤,僅適用於matplotlib上的給定點

x = [ datetime.datetime(..), ... , datetime.datetime()] 

列表我ax.xaxis.set_ticklabels(x)試過。

我想只爲出現在列表中的每一個六個點繪製日期,但我得到這樣的結果:

plot

我用來獲取該地塊的代碼如下:

# figure's size in inch 
fig = Figure(figsize=(8, 8)) 
# axes' position         
ax = Axes(fig, [.1, .1, .8, .8]) 
ax.errorbar(matplotlib.dates.date2num(x), y, yerr=el['e'], fmt=format_string, label=label) 

# shrinks current axis to 90% 
box = ax.get_position() 
ax.set_position([box.x0, box.y0, box.width * 0.9, box.height]) 
# puts a legend to the right of the current axis 
ax.legend(loc='center left', bbox_to_anchor=(1, 0.5)) 
# autoscales axes following data limits 
ax.autoscale(tight=False) 

dateFmt = matplotlib.dates.DateFormatter('%Y-%m-%d') 
ax.xaxis.set_major_formatter(dateFmt) 
monthsLoc = matplotlib.dates.MonthLocator() 
daysLoc = matplotlib.dates.DayLocator(interval=1) 
ax.xaxis.set_major_locator(monthsLoc) 
ax.xaxis.set_minor_locator(daysLoc) 
fig.autofmt_xdate(bottom=0.18) 

# I tried to set tick labels with this but with no results 
#ax.xaxis.set_ticklabels(x) 
# adds axes to figure 
fig.add_axes(ax) 
# creates a canvas from figure 
canvas = FigureCanvasAgg(fig) 
# saves figure to filesystem in png format 
canvas.print_figure(settings.MEDIA_ROOT + file_relative_path) 

我在做什麼錯了?

感謝

+0

你嘗試ax.set_ticks? – tillsten

+2

由於'Axes'對象沒有屬性'set_ticks'',所以失敗。但'ax.xaxis.set_ticks(x)'工作:)謝謝 Ps。把它寫成答案,以便我可以接受它 – gc5

回答

6

要設置蜱和其標籤使用:

x = [ datetime.datetime(..), ... , datetime.datetime()] 
ax.xaxis.set_ticks(x) 
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