![]() ![]() The polar grid can be on at the same time as the rectangular grid. If 'grid' is not checked and 'dots' is checked you will see an array of small crosses where the grid lines would meet. If 'grid' is checked, grid lines appear in the quadrants checked. For this last option to be effective, the corresponding tick interval should be a rational multiple of pi with a small denominator, and the font in the ' Scale on axes' option of the Misc/ Fonts menu should be set to 'Symbol'. Check 'pi' if you want the ticks labeled using multiples of pi. If there are too many values showing, enter a higher number in the corresponding 'freq' box. ![]() The number of decimal places displayed is entered as 'places'. Click on 'scale' and 'mark scale on border' to place the numbers at the edge of the window. Click on 'scale' and 'mark scale on axes' to put the corresponding numerical values next to the ticks. The distance between successive ticks is the value of 'interval'. Check 'ticks' to put equally spaced marks on the axes. If you check 'arrows', you get small arrows at the ends of the axes. ![]() Check 'labels' to put the letters 'x' and 'y' into the diagram. ![]()
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