NetCDFFileProperties

Summary

The Network Common Data Form (netCDF) is a binary, self-describing, machine-independent file format for storing scientific data.

Learn more about netCDF

Syntax

 NetCDFFileProperties  (netcdffile)

Parameter	Explanation	Data Type
netcdffile	The input netCDF file.	String

Method Overview

Method	Explanation
getAttributeNames ({variable_name})	Gets the attribute names of a variable in a NetCDF file.
getAttributeValue (variable_name, attribute_name)	Get the value of an attribute.
getDimensionIndex (dimension_name, value)	Gets the dimension index.
getDimensionSize (dimension_name)	Gets the dimension size.
getDimensionValue (dimension_name, index)	Gets the dimension value.
getDimensions ()	Gets the dimensions.
getDimensionsByVariable (variable_name)	Gets the dimensions by variable.
getFieldType (name)	Gets the field type of a variable or dimension.
getSpatialReference (variable_name, x_dimension, y_dimension)	Gets the spatial reference of a variable.
getVariables ()	Gets the variables.
getVariablesByDimension (dimension_name)	Get the variables by dimension.

Methods

getAttributeNames ({variable_name})

Parameter	Explanation	Data Type
variable_name [variable_name,...]	Variable name of the NetCDF file.	String

Return Value

Data Type	Explanation
String	The attribute names of the variable.

getAttributeValue (variable_name, attribute_name)

Parameter	Explanation	Data Type
variable_name	Variable name of the netCDF file.	String
attribute_name	Attribute name of the netCDF file.	String

Return Value

Data Type	Explanation
Object	The value of the attribute. The type of returned value depends on the dimension type.

getDimensionIndex (dimension_name, value)

Parameter	Explanation	Data Type
dimension_name	Dimension name of the NetCDF file.	String
value	The dimension value.	Integer

Return Value

Data Type	Explanation
Integer	The dimension index.

getDimensionSize (dimension_name)

Parameter	Explanation	Data Type
dimension_name	Dimension name of the NetCDF file.	String

Return Value

Data Type	Explanation
Integer	The dimension size.

getDimensionValue (dimension_name, index)

Parameter	Explanation	Data Type
dimension_name	Dimension name of the NetCDF file.	String
index	The index position.	Integer

Return Value

Data Type	Explanation
Object	The dimension value. The type of returned value depends on the dimension type.

getDimensions ()

Return Value

Data Type	Explanation
String	List of dimensions.

getDimensionsByVariable (variable_name)

Parameter	Explanation	Data Type
variable_name	Variable name of the NetCDF file.	String

Return Value

Data Type	Explanation
String	The dimensions by variable.

getFieldType (name)

Parameter	Explanation	Data Type
name	Variable or dimension name of the NetCDF file.	String

Return Value

Data Type	Explanation
String	The field type.

getSpatialReference (variable_name, x_dimension, y_dimension)

Parameter	Explanation	Data Type
variable_name	Variable name of the NetCDF file.	String
x_dimension	The x-dimension.	Integer
y_dimension	The y-dimension.	Integer

Return Value

Data Type	Explanation
SpatialReference	The spatial reference of a variable.

getVariables ()

Return Value

Data Type	Explanation
String	List of variables.

getVariablesByDimension (dimension_name)

Parameter	Explanation	Data Type
dimension_name	Variable name of the netCDF file	String

Return Value

Data Type	Explanation
String	List of variables by dimension

Code Sample

NetCDFFileProperties example

Display properties of NetCDF file.

import arcpy

in_netcdf = "c:/NetCDF/crwr.nc"
try:
    nc_fp = arcpy.NetCDFFileProperties(in_netcdf)

    # Get Variables
    for nc_var in nc_fp.getVariables():
        print("Variable: {0}".format(nc_var))
        print("\tVariable type: {0}".format(nc_fp.getFieldType(nc_var)))

        # Get dimensions by variable
        for nc_dim_by_var in nc_fp.getDimensionsByVariable(nc_var):
            print("Dimension: {0}".format(nc_dim_by_var))
        print(nc_fp.getAttributeValue(nc_var, "units"))

        # Get Variable Attribues
        for nc_va_name in nc_fp.getAttributeNames(nc_var):
            print("Attribute Name: {0}".format(nc_va_name))

    # Get Dimensions
    for nc_dim in nc_fp.getDimensions():
        print("Dimension: {0}".format(nc_dim))
        print("\tDimension size: {0}".format(nc_fp.getDimensionSize(nc_dim)))
        print("\tDimension type: {0}".format(nc_fp.getFieldType(nc_dim)))

        for i in range(0, nc_fp.getDimensionSize(nc_dim)):
            nc_dim_value = nc_fp.getDimensionValue(nc_dim, i)
            print("\tDimension value: {0}".format(nc_dim_value))
            print("\tDimension index: {0}".format(
                nc_fp.getDimensionIndex(nc_dim, nc_dim_value)))

        # Get Variable by dimension
        for nc_vars_by_dim in nc_fp.getVariablesByDimension(nc_dim):
            print("\tVariable by dimension: {0}".format(nc_vars_by_dim))

    # Get Global Attribues
    for nc_att_name in nc_fp.getAttributeNames(""):
        print("Attribute Name: {0}".format(nc_att_name))
        print(nc_fp.getAttributeValue("", nc_att_name))

except Exception as err:
    print(err)

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