| 摘要 |
PURPOSE:To plot a line segment while confirming how long distance is corresponding to the length of the line segment plotted to a graphic prepared in advance when the line segment is plotted. CONSTITUTION:While referring to a basic graphic memory 2-2 and a scale memory, a CPU 1 executes the guiding display of a scale graphic to be the index of line segment plotting and the guiding display of a reference distance showing its size. When any arbitrary line segment is plotted, the CPU 1 calculates the dot length of the plotted line segment, calculates a ratio between this dot length and the dot length of the scale graphic, calculates the distance of the line segment from this ratio and the reference distance and displays it on a window. |
