Texas Instruments TI86 User Manual - Page 114

102 Chapter 6: Graph Tools Graph database (GDB) and picture (PIC) variable names can be from one to eight characters long. The first character must be a letter. The next section describes how to draw lines, points, curves, and text onto a graph; you then can store the drawings to a PIC variable. Before Drawing on a Graph All drawings are temporary; they are not stored in a graph database. Any action that causes Smart Graph to replot the graph erases all drawings. Therefore, before you use any drawing tool, consider whether you want to perform any of these graphing activities first. ♦ Change a mode setting that affects graphs ♦ Select, deselect, or edit a current function or stat plot ♦ Change the value of a variable used in a selected function ♦ Change a window variable value ♦ Change a graph format setting or graph style ♦ Clear current drawings with CLDRW Saving and Recalling Drawn Pictures To store the elements that define the current graph to a graph database (GDB) variable, select STGDB from the GRAPH menu. These information types are stored to a GDB variable: ♦ Equation editor functions ♦ Graph style settings ♦ Window variable values ♦ Format settings To recall the stored GDB later, select RCGDB from the GRAPH menu, and then select the GDB variable from the GRAPH RCGDB menu. When you recall a GDB, the information stored in the GDB replaces any current information of these types. To store the current graph display, including drawings, to a picture (PIC) variable, select STPIC from the GRAPH menu. Only the graph picture is stored to the specified PIC variable. To superimpose one or more stored graph pictures onto a graph later, select RCPIC from the GRAPH menu, and then select the PIC variable from the GRAPH RCPIC menu.