The following instructions explain how to create a new attribute. This dialog allows the creation of attributes that are numbers or strings, and 1D arrays of numbers.
To create an attribute, it is necessary to define the name, type, and number of values or length of string. Then the value(s) can be entered.
At each step, be sure to type
The size specifies the size of a single data point in bits.
For a string attribute, the length is the maximum length of the String.
As a practical matter, attributes must be relatively small, perhaps a few kilobytes.
Numeric data is interpreted according to the Datatype , using the number formats supported by Java. If the attribute is an array, values of the array must be separated by a comma, for example, 12, 3, 4, 5.
In the case of a string attribute, the entered text is stored as the string.
Note that the dialog will accept more values than will fit. In this case, the excess values will not be written to the file, although they may remain visible in the dialog.