Sharp el-9950 - Page 106

105
Chapter 4: Graphing Features
1 PntON( PntON(x-coordinate, y-coordinate)
Drawsapointatagivencoordinate.IttakestheX-Y
coordinate as an argument.
ThistoolcaneitherbeaccessedfromtheGRAPH
windoworotherwindows.EnteringfromtheGRAPH
window enables a graphic entry, while entering from
otherwindowsenablestext-basedentry.
2 PntOFF( PntOFF(x-coordinate, y-coordinate)
Erasesapixelpoint.IttakestheX-Ycoordinateasan
argument.
3 PntCHG( PntCHG(x-coordinate, y-coordinate)
Changesthestatus(i.e.,visible/invisible)ofapixelata
given coordinate. Deletes the point when it is displayed
and draws the point when it is not displayed.
Note: Lines,points,andcurvesdrawnbytheDrawmenuarehandledas
pictures. Therefore, they cannot be traced.
  GraphsdrawnbytheDrawmenuareautomaticallyclearedifany
screen settings are changed. To save the graph, use the StoPict
menu.
B POINT
 Utilizethesetoolstomanagepointdrawinganddeletiononthe
graph.
There are two operation methods. One is to directly move the
cursor pointer to the location on the graph screen where you wish
to insert the point. The other is to call a relevant command on the
Calculationscreenandtodirectlyinputthecoordinatestodrawor
deletethepoint.(XandYcoordinatesshouldbeseparatedbya
comma.)