MULTIPLE-PLANE DIAGRAM DISPLAY METHOD OF HOLE SHAPE

This invention relates to a multiple-plane diagram display method of a hole shape which displays the hole shape of a component (WK), by use of hole shape data, in a multiple-plane diagram (PLF, FRF; SDF) on a display screen. Display colors and display patterns (PA1 ~ PA4) for displaying the hole are determined in accordance with the depth of the hole and when the hole shapes (H1'' ~ hH4'') overlap with each other in either a front view or side view, a shallow hole shape is displayed preferentially on a deep hole shape.