CSV- 繪制氣溫圖表
資源:
鏈接: https://pan.baidu.com/s/1kqREk-sRnOcC34Mh1lBDHQ 提取碼: uyx7
# highs_lows_Jul.py 最高溫及最低溫 import csv from matplotlib import pyplot as plt from datetime import datetime # 從文件中獲取最高氣溫 filename = 'data/sitka_weather_07-2014.csv' with open(filename) as f: # 打開文件 reader = csv.reader(f) # 調用csv.reader(),創建一個與文件相關聯的閱讀器對象 header_row = next(reader) # 閱讀下一行(標題行) """ for index, column_header in enumerate(header_row): # 獲取索引及值 print(index, column_header) """ """ dates = [datetime.strptime(row[0], '%Y-%m-%d') for row in reader] # 使用strptime方法設置日期的格式 highs = [int((int(row[1]) - 32) / 1.8) for row in reader] # Max TemperatureF列 每行的[1]索引處,並將華氏度轉換為攝氏度 """ datas = [[datetime.strptime(row[0], '%Y-%m-%d'), int((int(row[1]) - 32) / 1.8)] for row in reader] dates = [row[0] for row in datas] # or [datas[row][0] for row in range(len(datas))] highs = [row[1] for row in datas] # or [datas[row][1] for row in range(len(datas))] # 根據數據繪制圖形 fig = plt.figure(dpi=128, figsize=(10, 6)) plt.plot(dates, highs, c='red') # 設置圖形的格式 plt.title('Daily high temperatures - July, 2014', fontsize=24) plt.xlabel('', fontsize=12) fig.autofmt_xdate() # 繪制斜的日期標簽,以免重疊 plt.ylabel('Temperature (C)', fontsize=12) plt.tick_params(axis='both', which='major', labelsize=12) # 添加數值 for x, y in zip(dates, highs): plt.text(x, y, y, ha='center', va='bottom', color='blue') # 修改刻度 plt.xticks(dates[::3]) # 顯示阿拉斯加錫特卡2014年7越每日最高氣溫折線圖 plt.show()

# highs_lows_Jul.py 最高溫及最低溫 import csv from matplotlib import pyplot as plt from datetime import datetime # 從文件中獲取最高氣溫 filename = 'data/sitka_weather_2014.csv' with open(filename) as f: # 打開文件 reader = csv.reader(f) # 調用csv.reader(),創建一個與文件相關聯的閱讀器對象 header_row = next(reader) # 閱讀下一行(標題行) datas = [[datetime.strptime(row[0], '%Y-%m-%d'), int((int(row[1]) - 32) / 1.8)] for row in reader] dates = [row[0] for row in datas] highs = [row[1] for row in datas] # 根據數據繪制圖形 fig = plt.figure(dpi=128, figsize=(10, 6)) plt.plot(dates, highs, c='red') # 設置圖形的格式 plt.title('Daily high temperatures - 2014', fontsize=24) plt.xlabel('', fontsize=12) fig.autofmt_xdate() # 繪制斜的日期標簽,以免重疊 plt.ylabel('Temperature (C)', fontsize=12) plt.tick_params(axis='both', which='major', labelsize=12) # 修改刻度 plt.xticks(dates[::31]) # 顯示阿拉斯加錫特卡2014年每日最高氣溫折線圖 plt.show()

# highs_lows_Jul.py 最高溫及最低溫 import csv from matplotlib import pyplot as plt from datetime import datetime # 從文件中獲取最高氣溫 filename = 'data/sitka_weather_2014.csv' with open(filename) as f: # 打開文件 reader = csv.reader(f) # 調用csv.reader(),創建一個與文件相關聯的閱讀器對象 header_row = next(reader) # 閱讀下一行(標題行) datas = [[datetime.strptime(row[0], '%Y-%m-%d'), int((int(row[1]) - 32) / 1.8), int((int(row[3]) - 32) / 1.8)] for row in reader] dates = [row[0] for row in datas] highs = [row[1] for row in datas] lows = [row[2] for row in datas] # 根據數據繪制圖形 fig = plt.figure(dpi=128, figsize=(10, 6)) plt.plot(dates, highs, c='red', alpha=0.5) plt.plot(dates, lows, c='blue', alpha=0.5) # 給圖表區域着色 plt.fill_between(dates, highs, lows, facecolor='blue', alpha=0.2) # fill_between(x, y, y, facecolor, alpha) # alpha值指定顏色的透明度(0為完全透明,1表示完全不透明) # 設置圖形的格式 plt.title('Daily high and low temperatures - 2014', fontsize=24) plt.xlabel('', fontsize=12) fig.autofmt_xdate() # 繪制斜的日期標簽,以免重疊 plt.ylabel('Temperature (C)', fontsize=12) plt.tick_params(axis='both', which='major', labelsize=12) # 修改刻度 plt.xticks(dates[::31]) # 顯示阿拉斯加錫特卡2014年每日最高氣溫折線圖 plt.show()

