NetCDF standard attributes

These attributes can be used with any variable. Fuller descriptions can be obtained from the NetCDF user's guide.

MIunits

Specifies the units of the variable values as a string -- units should be compatible with the udunits library.

MIlong_name

A string giving a textual description of the variable for human consumption.

MIvalid_range

A vector of two numbers specifying the minimum and maximum valid values in the variable. For the MINC routines the order is not important. For the MIimage variable, this attribute (or MIvalid_max and MIvalid_min) should always be present unless the defaults of full range for integer types and [0.0,1.0] for floating point types is correct.

MIvalid_max

A number giving the valid maximum for the variable.

MIvalid_min

A number giving the valid minimum for the variable.

MI_FillValue

Number to be used for filling in values in the variable that are not explicitly written.

MItitle

A global string that provides a description of what is in the file.

MIhistory

A global string that should store one line for each program that has modified the file. Each line should contain the program name and arguments.