| 摘要 |
<p>PURPOSE:To plot a graphic through simplified plotting operation by preparing many graphic elements which have various unit graphic such as dots, curved lines, and parallel lines, and selecting and arranging those graphic elements in plane. CONSTITUTION:Many graphic data storage parts are provided. Function items of hierarchic structure are assigned corresponding to software keys respectively and display on a screen as software key displays 51a-51j. The function items includes roads, railroads, etc., and, for example, various parallel lines are prepared as unit graphics for plotting the railroads. the coordinate relation with software is switched with a switching key. A cursor K is moved by unit areas U with cursor movement keys and, for example, when the cursor is positioned in a unit area having coordinates (2, C) and a software key is pressed, a graphic element E which is parallel line corresponding to the screen display 51b is arranged at the position. Thus, graphic elements are read out of a memory to the screen and arrayed in plane to plot a figure.</p> |
