| 摘要 |
<p>PURPOSE:To simultaneously recognize the number of grids and to easily utilize the title system by specifying the horizontal and vertical intervals of grids constituting a mesh on a display screen and displaying grids identifiably from other grids at every standard number of grids. CONSTITUTION:In order to display a mesh MSH on the display screen, an operator picks up a 'mesh definition' item MDI from a menu table 108b. A question for the position of a 'mesh reference point' is outputted, the operator moves a cursor 108c and sets up a mesh reference point to a point P0. Since question messages for the horizontal and vertical grid intervals are displayed, the grid intervals are set up by moving the cursor 108c. The standard number 5 of grids stored in a RAM 103 is read out and grids with a different size are displayed every 5 grids in the horizontal and vertical directions. Consequently, the number of grids on the screen can be simultaneously recognize and the system can be easily utilized.</p> |
