Python 调用 NetCDF 文件时出现错误 000732

Question

执行以下代码时，我不断收到错误消息，而且我无法修复它。任何想法可能是错的？我试图将文件名更改为更简单的文件名，但没有帮助。 NetCDF数据来自TRMM

import arcpy
import os
dir_name = 'D:\Data'


# Set local variables
inNetCDFFile = "D:\DataB43.20090201.7A.HDF.nc"
variable = "precipitation"
XDimension = "nlon"
YDimension = "nlat"
outRasterLayer = "D:\Data\test"
bandDimmension = ""
dimensionValues = ""
valueSelectionMethod = ""

# Execute MakeNetCDFRasterLayer
arcpy.MakeNetCDFRasterLayer_md(inNetCDFFile, variable, XDimension, YDimension,
                               outRasterLayer, bandDimmension, dimensionValues, 
                               valueSelectionMethod)

错误：

Traceback (most recent call last):
  File "D:\Python27\ArcGIS10.2\Lib\site-packages\pythonwin\pywin\framework\scriptutils.py", line 326, in RunScript
    exec codeObject in __main__.__dict__
  File "D:\Google Drive\Gates Project\Data\Climate\TRMM\Python\TRMMNetCDFtoRaster.py", line 19, in <module>
    valueSelectionMethod)
  File "D:\Program Files (x86)\ArcGIS\Desktop10.2\arcpy\arcpy\md.py", line 171, in MakeNetCDFRasterLayer
    raise e
ExecuteError: Failed to execute. Parameters are not valid.
ERROR 000732: Input netCDF File: Dataset D:\DataB43.20090201.7A.HDF.nc does not exist or is not supported
Failed to execute (MakeNetCDFRasterLayer).

Answer 1

我不熟悉 arcpy，但 example 使用正斜杠，而不是反斜杠。我会试试

inNetCDFFile = "D:/Data/3B43.20090201.7A.HDF.nc"

Answer 2

显然您正在尝试加载错误的文件路径：

ERROR 000732: Input netCDF File: Dataset D:\DataB43.20090201.7A.HDF.nc does not exist or is not supported

如果您在 Windows 使用：

inNetCDFFile = "D:\Data\3B43.20090201.7A.HDF.nc"

或

inNetCDFFile = r"D:\DataB43.20090201.7A.HDF.nc"

查理

Answer 3

感谢您的帮助，我已经设法制作了一个不错的脚本，它从目录中获取所有 NetCDF 文件并将它们转换为栅格，所以我将在这里 post 它 - 其他人可能会发现它有用！（专门针对TRMM降雨数据）

import arcpy
import os

dir_name = 'D:\Data'

# Set local variables
variable = "precipitation"
XDimension = "nlon"
YDimension = "nlat"
bandDimmension = ""
dimensionValues = ""
valueSelectionMethod = "BY_VALUE"


# Loop that converts NetCDF files from directory and converts to .img rasters:
dir_name = 'D:\Data'
for filename in os.listdir(dir_name):
    if not filename.endswith(".nc"): continue
    full_path = os.path.join(dir_name, filename)
    outRaster = '%s.img' % (full_path,)
    fileroot = filename[0:(len(filename)-10)]   
    outRasterLayer = dir_name + "\" + fileroot
    arcpy.MakeNetCDFRasterLayer_md(full_path, variable, XDimension, YDimension,
                               outRasterLayer, bandDimmension, dimensionValues, 
                               valueSelectionMethod)
    arcpy.CopyRaster_management(outRasterLayer,outRaster)

瞧！

Python 调用 NetCDF 文件时出现错误 000732

ERROR 000732 in Python calling for NetCDF file

python

raster

netcdf