METHOD AND DEVICE FOR DRAWING INDICATION LINE

PROBLEM TO BE SOLVED: To display plotting of a combination of a line segment and a feature graphic (triangle) like an arrow line. SOLUTION: Plural arbitrary control points are inputted on a picture, and plural intermediate points between these control points are calculated, and control points and intermediate points are registered in a table as a series of processing points from the first to the last. A feature graphic like a triangle is arranged at the last processing point, and the circumscribed part of this feature graphic is made coincide with this processing point, and finally, the line segment is drawn from the first processing point to the last processing point. Thus, an indication line consisting of more natural arrows is completed.