markPoints

Sometimes you need to be able to manually count objects or regions in an image. (You may want to validate an automatic count, for instance.) This tool facilitates that task by allowing you to mark objects with cursor clicks. Then you can tally and delete them.
SYNTAX:
markPoints
Operates on current image object
markPoints(imgHandle)
Activates and operates on image imgHandle
markPoints(..., task)
task (optional input) may be:
'Clear' (deletes existing marks)
'Count' (returns the count of existing marks)
'Mark' (Default; return to marking task)