定义一个绘制甘特图的类
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# -*- coding: utf-8 -*- from datetime import datetime import sys import numpy as np import matplotlib.pyplot as plt import matplotlib.font_manager as font_manager import matplotlib.dates as mdates import logging from pylab import * mpl.rcParams[ 'font.sans-serif' ] = [ 'SimHei' ] class Gantt( object ): #颜色色标:参考http://colorbrewer2.org/ RdYlGr = [ '#d73027' , '#f46d43' , '#fdae61' , '#fee08b' , '#ffffbf' , '#d9ef8b' , '#a6d96a' , '#66bd63' , '#1a9850' ] POS_START = 1.0 POS_STEP = 0.5 def __init__( self , tasks): self ._fig = plt.figure(figsize = ( 15 , 10 )) self ._ax = self ._fig.add_axes([ 0.1 , 0.1 , . 75 , . 5 ]) self .tasks = tasks[:: - 1 ] # 倒序 def _format_date( self , date_string): try : date = datetime.datetime.strptime(date_string, '%Y-%m-%d %H:%M:%S' ) # 将日期字符串转换成datetime类型 except ValueError as err: logging.error( "String '{0}' can not be converted to datetime object: {1}" . format (date_string, err)) sys.exit( - 1 ) mpl_date = mdates.date2num(date) # 得到日期类型的时间戳 return mpl_date def _plot_bars( self ): i = 0 for task in self .tasks: start = self ._format_date(task[ 'start' ]) # 获取任务开始时间的时间戳 end = self ._format_date(task[ 'end' ]) # 获取任务结束时间的时间戳 bottom = (i * Gantt.POS_STEP) + Gantt.POS_START width = end - start # 柱子的宽度 self ._ax.barh(bottom, width, left = start, height = 0.3 ,align = 'center' , label = task[ 'label' ],color = Gantt.RdYlGr[i % len (Gantt.RdYlGr)]) i + = 1 def _configure_yaxis( self ): task_labels = [t[ 'label' ] for t in self .tasks] # 所有的刻度文本标签 pos = self ._positions( len (task_labels)) # 素有的刻度值 ylocs = self ._ax.set_yticks(pos) # 设置y轴刻度线 ylabels = self ._ax.set_yticklabels(task_labels) # 设置y轴刻度标签 plt.setp(ylabels, size = 'medium' ) # 设置y轴刻度标签属性(中号字) def _configure_xaxis( self ): self ._ax.xaxis_date() # 使用时间轴 rule = mdates.rrulewrapper(mdates.WEEKLY, interval = 1 ) # 生成时间生成器(每周1个值,从周日开始) loc = mdates.RRuleLocator(rule) # 生成时间刻度 formatter = mdates.DateFormatter( "%m/%d" ) # 生成时间格式 self ._ax.xaxis.set_major_locator(loc) # 设置主刻度 self ._ax.xaxis.set_major_formatter(formatter) # 设置主刻度标签格式 xlabels = self ._ax.get_xticklabels() # 获取刻度标签对象 plt.setp(xlabels, rotation = 70 , fontsize = 10 ) # 设置刻度标签对象的属性(30度旋转,字体大小10) def _configure_figure( self ): self ._configure_xaxis() self ._configure_yaxis() self ._ax.grid( True , axis = 'x' ,color = 'gray' ) self ._set_legend() self ._fig.autofmt_xdate() def _set_legend( self ): font = font_manager.FontProperties(size = 'small' ) self ._ax.legend(loc = 'upper right' , prop = font) def _positions( self , count): end = count * Gantt.POS_STEP + Gantt.POS_START pos = np.arange(Gantt.POS_START, end, Gantt.POS_STEP) return pos def show( self ): self ._plot_bars() self ._configure_figure() plt.show() |
调用及数据格式
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if __name__ = = '__main__' : TEST_DATA = ( { 'label' : '项目调研' , 'start' : '2019-02-01 12:00:00' , 'end' : '2019-03-15 18:00:00' }, { 'label' : '项目准备' , 'start' : '2019-02-15 09:00:00' , 'end' : '2019-04-09 12:00:00' }, { 'label' : '制定方案' , 'start' : '2019-04-10 12:00:00' , 'end' : '2019-05-30 18:00:00' }, { 'label' : '项目实施' , 'start' : '2019-05-01 09:00:00' , 'end' : '2019-08-31 13:00:00' }, { 'label' : '项目培训' , 'start' : '2019-07-01 09:00:00' , 'end' : '2019-09-21 13:00:00' }, { 'label' : '项目验收' , 'start' : '2019-09-22 09:00:00' , 'end' : '2019-10-22 13:00:00' }, { 'label' : '项目竣工' , 'start' : '2019-10-23 09:00:00' , 'end' : '2019-11-23 13:00:00' }, ) gantt = Gantt(TEST_DATA) plt.xlabel( '项目日期' ) plt.ylabel( '项目进度' ) plt.title( '项目进度甘特图' ) plt.figure(figsize = ( 10 , 10 ),dpi = 150 ) gantt.show() |
类似于展示的图形
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原文链接:https://wxw-123.blog.csdn.net/article/details/124063816