新的一天帶來了新的問題與Python,不幸的是:我已經生成/Asse田:不兼容大小:參數「高度」必須是長度爲2或標量(Matplotlib,Python 2.7版,繪製圖表)
文件我用Java編寫的其他應用程序。這個應用程序生成一些數據的文件,這是一個隨機的東西,因爲我無法說出每個文件有多少行。示例文件如下所示:
3 Sat Jan 21 00:00:00 2012
7 Sun Mar 11 00:00:00 2012
5 Fri Jan 1 00:00:00 2010
4 Sat Feb 5 00:00:00 2011
8 Sun Apr 11 00:00:00 2010
4 Wed Aug 24 00:00:00 2011
8 Sat Feb 20 00:00:00 2010
3 Thu Oct 13 00:00:00 2011
9 Fri Dec 17 00:00:00 2010
4 Tue Jul 20 00:00:00 2010
8 Fri Dec 2 00:00:00 2011
6 Mon May 31 00:00:00 2010
5 Mon May 16 00:00:00 2011
8 Mon Apr 30 00:00:00 2012
3 Thu Oct 28 00:00:00 2010
1 Tue Jun 19 00:00:00 2012
7 Wed Sep 8 00:00:00 2010
我想用此數據繪製圖表。在X軸上,我想要格式化日期,並在我的文件的第一列中輸入Y軸編號。繼承人我可愛的Python代碼:
# -*- coding: utf-8 -*-
#!/usr/bin/env python
import wx
import matplotlib
matplotlib.use("TkAgg")
import matplotlib.pyplot as pl
import datetime
def monthNum(month) :
if month == "Jan" :
return 1
elif month == "Feb" :
return 2
elif month == "Mar" :
return 3
elif month == "Apr" :
return 4
elif month == "May" :
return 5
elif month == "Jun" :
return 6
elif month == "Jul" :
return 7
elif month == "Aug" :
return 8
elif month == "Sep" :
return 9
elif month == "Oct" :
return 10
elif month == "Nov" :
return 11
elif month == "Dec" :
return 12
def convertDate(dateTime) :
line = dateTime.split(' ')
date = (str(line[2]) + "-" + str(monthNum(line[1])) + "-" + str(line[4]))
return date
def readFile(filename) :
values = []
dates = []
try :
with open(filename, "r") as openedFile:
for line in openedFile :
line = line.strip()
data = line.split("\t")
values.append(int(data[0]))
newDate = convertDate(data[1])
dates.append(datetime.datetime.strptime(newDate, "%d-%m-%Y").date())
except IOError :
print("IOERROR")
except ValueError :
print("VALUE ERROR")
if len(values) != 0 and len(dates) != 0 :
drawChart(values, dates, filename)
def drawChart(values, dates, filename):
fig = pl.figure(dpi=60,figsize=(18, 10))
ax = fig.add_subplot(1,1,1)
fig.subplots_adjust(left=0.1, right=0.95, top=0.95, bottom=0.2)
ax.bar(range(len(dates)), values, facecolor='#777777', align='center', width=0.5, ecolor='black')
pl.axis('tight')
ax.set_xticks(range(len(dates)))
pl.yticks(values)
ax.set_xticklabels(dates, rotation = 90)
pl.savefig(filename + ".png")
pl.show()
pl.close()
readFile("file.txt")
一切都很好,如果file.txt
有一個單列。當它有更多的行,Python代碼給我一個錯誤:
VALUE ERROR Traceback (most recent call last): File "test.py", line 71, in <module> readFile("file.txt") File "test.py", line 56, in readFile drawChart(values, dates, filename) File "test.py", line 62, in drawChart ax.bar(range(len(dates)), values, facecolor='#777777', align='center', width=0.5, ecolor='black') File "/usr/lib/pymodules/python2.7/matplotlib/axes.py", line 4733, in bar nbars) AssertionError: incompatible sizes: argument 'height' must be length 2 or scalar
而我真的不知道如何解決它。它很好,如果file.txt
有一行,但正如我前面寫道:我不能說多少行file.txt
(它取決於我的Java應用程序)。
有人嗎?我在Kubuntu 12.04上使用Python 2.7和Matplotlib。
什麼變量「值」是否包含? – Sheena
@Sheena:它包含我的文件第一列中的數字列表 – Katie