我无法弄清楚如何用python绘制烛台OHLC图表。自从不推荐使用matplotlib.finance以来,我就遇到了这个问题...感谢您的帮助!
DataFrame的“引号”是一个excel(无法在此处粘贴),但具有以下列:
索引([“日期”,“打开”,“高”,“低”,“关闭”],dtype =“对象”)
我也有默认索引。 “日期”列是 pandas._libs.tslibs.timestamps.Timestamp
运行代码时,出现以下错误:
文件“”,第30行,在 Candlestick_ohlc(ax,zip(mdates.date2num(quotes.index.to_pydatetime()), AttributeError:“ RangeIndex”对象没有属性“ to_pydatetime”
这是我的代码:
import datetime
import matplotlib.dates as mdates
import matplotlib.pyplot as plt
import pandas as pd
from matplotlib.dates import MONDAY, DateFormatter, DayLocator,
WeekdayLocator
from mpl_finance import candlestick_ohlc
date1 = "2004-2-1"
date2 = "2004-4-12"
mondays = WeekdayLocator(MONDAY)
alldays = DayLocator()
weekFormatter = DateFormatter('%b %d')
dayFormatter = DateFormatter('%d')
fig, ax = plt.subplots()
fig.subplots_adjust(bottom=0.2)
ax.xaxis.set_major_locator(mondays)
ax.xaxis.set_minor_locator(alldays)
ax.xaxis.set_major_formatter(weekFormatter)
candlestick_ohlc(ax, zip(mdates.date2num(quotes.index.to_pydatetime()),
quotes['Open'], quotes['High'],
quotes['Low'], quotes['Close']),
width=0.6)
ax.xaxis_date()
ax.autoscale_view()
plt.setp(plt.gca().get_xticklabels(), rotation=45,
horizontalalignment='right')
plt.show()
答案 0 :(得分:0)
如果在构建DataFrame时未指定索引,它将默认为function setValue(cellname, value) {
SpreadsheetApp.getActiveSpreadsheet().getRange(cellname).setValue(value);
}
function getValue(cellname) {
return SpreadsheetApp.getActiveSpreadsheet().getRange(cellname).getValue();
}
function getNextRow(){
return SpreadsheetApp.getActiveSpreadsheet().getLastRow() + 1;
}
function setTeam1(){
addRecord(getValue('b2'), new Date(), '1');
}
function addRecord(a, b, c) {
var row = getNextRow();
setValue('a'+ row, a);
setValue('b'+ row, b);
setValue('c'+ row, c);
}
function finished() {
addRecord1(getValue('f1'), getValue('f2'), getValue('f3'));
}
function addRecord1(j, k, l) {
var row = getNextRow();
setValue('j'+ row, j);
setValue('k'+ row, k);
setValue('l'+ row, l);
}
,该索引仅连续对行进行编号。这个RangeIndex显然不能转换为日期-因此是错误。 RangeIndex
函数将read_excel
作为参数来指定将哪一列用作索引。您可能还必须提供index_col
。