TimeMultipleDays (arcpy.sa)

摘要

定义特定年份内的多日时间段以进行太阳能量计算。指定年份、起始日和结束日。

讨论

此对象可用于以下工具:太阳辐射区域太阳辐射点太阳辐射图

对于多日时间配置,最大天数范围为一年的总天数(365 天,闰年为 366 天)。如果起始日晚于结束日,时间计算将进行到下一年。例如,[起始日, 结束日] = [365, 31] 表示 12 月 31 日到下一年的 1 月 31 日。[1, 2] 表示第一天的时间,即从 0:00(1 月 1 日)到 0:00(1 月 2 日)。起始日结束日不能相同。

指定年间隔的起始日年份结束日。如果结束日早于起始日,则认为结束日在下一年。这是默认时间配置。

语法

TimeMultipleDays ({year}, {startDay}, {endDay})
参数说明数据类型
year

The Julian year.

(默认值为 the current Julian year)

Long
startDay

The startDay is the first Julian day in the analysis.

(默认值为 5, which is January 5th)

Long
endDay

The endDay is the last Julian day in the analysis.

(默认值为 160, which is June 9th or 10th, depending if the year is a leap year)

Long

属性

属性说明数据类型
year
(读写)

The Julian year.

Long
startDay
(读写)

The startDay is the first Julian day in the analysis.

Long
endDay
(读写)

The endDay is the last Julian day in the analysis.

Long

代码实例

TimeMultipleDays 示例 1(Python 窗口)

演示如何创建 TimeMultipleDays 类并在 Python 窗口中的 AreaSolarRadiation 工具中使用 TimeMultipleDays 类。

import arcpy
from arcpy import env
from arcpy.sa import *
env.workspace = "C:/sapyexamples/data"
myTimeMultiDay = TimeMultipleDays(1980, 216, 244) 
outAreaSolar = AreaSolarRadiation("solar_dem", "", "", myTimeMultiDay)
outAreaSolar.save("C:/temp/solarouttmd")
TimeMultipleDays 示例 2(独立脚本)

通过 AreaSolarRadiation 工具使用 TimeMultipleDays 类计算入射太阳辐射。

# Name: TimeMultipleDays_Ex_02.py
# Description: Execute AreaSolarRadiation using the TimeMultipleDays object.
# Requirements: Spatial Analyst Extension

# Import system modules
import arcpy
from arcpy import env
from arcpy.sa import *

# Set environment settings
env.workspace = "C:/sapyexamples/data"

# Set local variables
inRaster = "solar_dem"

# Create TimeMultipleDays Object
year = 2004
startDay = 5
endDay = 6
myTimeMultiDay = TimeMultipleDays(year, startDay, endDay)

# Check out the ArcGIS Spatial Analyst extension license
arcpy.CheckOutExtension("Spatial")

# Execute AreaSolarRadiation using TimeMultipleDays Object
outAreaSolar = AreaSolarRadiation(inRaster, "", 200, myTimeMultiDay, 14, 0.5,
                                  "NOINTERVAL", 1, "FROM_DEM", 32, 8, 8,
                                  "UNIFORM_SKY", 0.3, 0.5)


# Save the output 
outAreaSolar.save("C:/sapyexamples/output/areasolartmd2")

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5/10/2014