This function provides a lower-level version of ch.Set to allow fast setting of multiple properties by an external application which already validated them. Called with 2-column matrix (or 2-element vector) giving property-id, and the new value as a string.

ch.Fix 'HE' 'This is the Heading'
ch.Fix 2 2½'CO' 'Red,blue,lime,Teal' 'LI' 'Solid'
ch.Fix'YR' '0,100'

The id must be upper-case and exactly 2 chars. The new value would normally be a string – numbers may be separated with comma or space. Negatives are accepted as standard hyphen characters.

See also ...
ch.Set – setting chart properties