For Numeric Features, you must enter a value rather than choose from a set of States. Length and width features, for example, may be treated in Lucid keys as numeric rather than multi-state Features.
Numeric Features are preceded by an edit box rather than a checkbox:
To enter details about a Numeric Feature, click its edit box. A dialog box will pop up into which you can type the appropriate value.
You can enter single values and ranges. Valid entries will be of the form:
- x (a single value)
- x-y (between x and y)
- <x (less than x)
- >y (greater than y)
It’s good practice when using Numeric Features to enter a range rather than a single value if possible. For example, if a key to plants has a Feature Leaf length, it’s better to choose several typical leaves from your specimen and to enter the range of leaf lengths found over those leaves (ignoring unusually small or unusually large leaves) than to enter the length of a single leaf.