我試圖通過一些使用pyplot繪製時間戳作爲字符串的答案,但沒有一個答案完全解決了我的情況。python pyplot軸上的unix時間戳與燭臺圖
這是我試圖做的數據組織爲[時間戳,打開,關閉,最大,最小,平均,體積]的示例。蠟燭圖工作正常,但我試圖添加顯示日期時間的X軸。
我知道我需要將它們轉換爲格式化程序工作的日期時間對象,但我不確定用這種類型的繪圖來完成此操作的最佳方式是什麼。這是我現在有:
results=[[1388893323, 24.309684210526317, 24.302, 24.309684210526317, 24.261, 24.2828875, 172.1496], [1388893203, 24.301997222222223, 24.2501, 24.301997222222223, 24.2501, 24.28035104166669, 198.16475999999997],
[1388893083, 24.2501, 24.311, 24.311, 24.2501, 24.276614722222227, 1002.402654],
[1388892963, 24.311, 24.311, 24.37764285714286, 24.311, 24.313886785714317, 111.5695297]]
xfmt = DateFormatter('%Y-%m-%d %H:%M:%S')
fig, ax = plt.subplots()
fig.subplots_adjust(bottom=0.2)
ax.xaxis.set_major_formatter(xfmt)
candlestick(ax, results, width=20)
ax.xaxis_date()
ax.autoscale_view()
plt.setp(plt.gca().get_xticklabels(), rotation=45, horizontalalignment='right')
plt.show()
將會產生一個錯誤,我相信有關,不是一個DateTime對象:
File "sma.py", line 27, in <module>
plt.setp(plt.gca().get_xticklabels(), rotation=45, horizontalalignment='right')
File "/usr/lib/pymodules/python2.7/matplotlib/axes.py", line 2530, in get_xticklabels
self.xaxis.get_ticklabels(minor=minor))
File "/usr/lib/pymodules/python2.7/matplotlib/axis.py", line 1109, in get_ticklabels
return self.get_majorticklabels()
File "/usr/lib/pymodules/python2.7/matplotlib/axis.py", line 1093, in get_majorticklabels
ticks = self.get_major_ticks()
File "/usr/lib/pymodules/python2.7/matplotlib/axis.py", line 1191, in get_major_ticks
numticks = len(self.get_major_locator()())
File "/usr/lib/pymodules/python2.7/matplotlib/dates.py", line 749, in __call__
self.refresh()
File "/usr/lib/pymodules/python2.7/matplotlib/dates.py", line 758, in refresh
dmin, dmax = self.viewlim_to_dt()
File "/usr/lib/pymodules/python2.7/matplotlib/dates.py", line 530, in viewlim_to_dt
return num2date(vmin, self.tz), num2date(vmax, self.tz)
File "/usr/lib/pymodules/python2.7/matplotlib/dates.py", line 289, in num2date
if not cbook.iterable(x): return _from_ordinalf(x, tz)
File "/usr/lib/pymodules/python2.7/matplotlib/dates.py", line 203, in _from_ordinalf
dt = datetime.datetime.fromordinal(ix)
ValueError: year is out of range
我是新來的蟒蛇,我已經試過幾件事情這似乎並不奏效。我該如何解決這個問題?
我試圖重新映射的建議,它似乎是工作:
results=[[1388897101, 24.52, 24.51, 24.52, 24.51, 24.51562500000004, 58.848754], [1388896981, 24.51, 24.54544, 24.54544, 24.51, 24.521243333333334, 44.292754], [1388896861, 24.546877777777777, 24.5, 24.575633333333332, 24.5, 24.523650277777747, 71.937206], [1388896741, 24.5, 24.5, 24.5, 24.5, 24.5, 27.362592], [1388896621, 24.5, 24.516213513513513, 24.516213513513513, 24.5, 24.504934459459466, 87.731023]]
i=0;
for data in results:
results[i][0] = epoch2num(data[0])
i+=1
results=[[735238.19792824076, 24.52, 24.51, 24.52, 24.51, 24.51562500000004, 58.848754], [735238.19653935183, 24.51, 24.54544, 24.54544, 24.51, 24.521243333333334, 44.292754], [735238.19515046291, 24.546877777777777, 24.5, 24.575633333333332, 24.5, 24.523650277777747, 71.937206], [735238.1937615741, 24.5, 24.5, 24.5, 24.5, 24.5, 27.362592], [735238.19237268518, 24.5, 24.516213513513513, 24.516213513513513, 24.5, 24.504934459459466, 87.731023]]
但在x軸上的規模佔地個月,而不是僅僅只有幾個小時的數據。你如何調整日期的比例?
謝謝!這是一個很好的見解。日期看起來像他們現在在正確的範圍內,但我如何正確地縮放軸?請參閱編輯。 – user6972
@ user6972,對不起,我不知道。如何發佈一個單獨的問題? – falsetru