| BASIC FUNCTIONS AND STATEMENTS | ||
| Functions | ||
| 146 | FRE | returns the amount of available memory; allows a program to adapt itself to memory size |
| Graphics Statements | ||
| 147 | AXES | draws a pair of axes with optional tic marks |
| 148 | BREAD | byte read; reads the contents of the graphics display into the specified string variable, enabling you to read and store the entire graphics display in one variable |
| 149 | CLIP | defines plotting boundaries (softclips) in current units mode, enabling you to highlight or make windows around specified areas of your graph |
| 150 | CSIZE | character size; specidies the height, width-height aspect ratio, and slant of characters used in labels |
| 151 | CURSOR | stores the value of the current cursor coordinates in the specified variable names |
| 152 | DRAW | drops the pen and draws to the specified coordinate position |
| 153 | FXD | establishes the label format for automatic axes labeling with the LAXES and LGRID statements |
| 154 | FRAME | draws a box around current plotting area |
| 155 | GRAPHICS | switches the CRT to graphics mode if it is not already there |
| 156 | GRID | draws a full-scale grid with optional tic marks on the grid lines |
| 157 | IPLOT | provides incremental plotting with pen control from the last plotted point |
| 158 | LABEL USING | used like the PRINT USING statement to draw formatted labels on the plotting device; the image format string determines the exact form of the labels |
| 159 | LAXES | label axes; draws and labels a pair of axes; labels are placed outside the plotting area, within the graphic limits, at each major tic mark |
| 160 | LGRID | label grid; draws and labels a grid; labels are placed outside the plotting boundaries, within the graphic limits, on each grid line |
| 161 | LIMIT | defines the graphic limits beyond which the pen is not allowed to move; when the optional parameters are not included, two corner points of the plotting area can be digitized to define the graphic limits |
| 162 | LINETYPE | selects one of eight solid or dashed line types |
| 163 | LOCATE | specifies the plotting boundaries upon which SCALE or SHOW will map; lines drawn or plotted in user units will not be allowed to cross the plotting boundaries specified by LOCATE; useful for creating a window for your plot, saving space outside the window for labels |
| 164 | LORG | label origin; determines where subsequent labels are drawn relative to the current pen location; useful for positioning or centering labels |
| 165 | MSCALE | scales the current plotting area in millimeters |
| 166 | PDIR | plot direction; sets the angle of rotation for relative or incremental plotting |
| 167 | PLOTTER IS | specifies the target of all plotter statements and operations |
| 168 | RATIO | returns a value equal to the ratio of the physical dimensions of the graphic limits, i.e., the x dimension divided by the y dimension |
| 169 | RPLOT | relative plot; enables relative plotting and pen control from the last pen position determined by a statement other than RPLOT; the direction may be rotated with the PDIR statement |
| 170 | SETGU | sets the graphic units as the current units mode |
| 171 | SET I/O | enables you to write information directly to the registers in an interface module |
| 172 | SHOW | defines an isotropic scale (one unit of x equals one unit of y) in user units within the plotting boundaries |
| 173 | UNCLIP | sets the plotting boundaries (which are set by LOCATE or CLIP) equal to the graphic limits |
| 174 | WHERE | assigns the coordinate values of the last plotted or moved-to point and the pen's up or down status to the specified variables |