Page 22-31
You can also convert equations into GROBs. For example, using the
equation writer type in the equation ‘X^2+3’ into stack level 1, and then press
1`
„°L
@)GROB @
GROB
. You will now have in level 1 the GROB
described as:
As a graphic object this equation can now be placed in the graphics display.
To recover the graphics display press
š
. Then, move the cursor to an empty
sector in the graph, and press
@)EDIT
LL
@REPL
. The equation ‘X^2-5’ is
placed in the graph, for example:
Thus, GROBs can be used to document graphics by placing equations, or text,
in the graphics display.
The GROB menu
The GROB menu, accessible through
„°L
@)GROB @
GROB
, contains the
following functions. Press
L
to move to the next menu:
GROB
Of these functions we have already used SUB, REPL, (from the graphics EDIT
menu), ANIMATE [ANIMA], and
GROB. ([
PRG
] is simply a way to
return to the programming menu.) While using
GROB in the two previous
examples you may have noticed that I used a 3 while converting the graph
into a GROB, while I used a 1 when I converted the equation into a GROB.
This parameter of the function
GROB indicates the size of the object that is
being converted into a GROB as 0 or 1 – for a small object, 2 – medium, and
3 – large. The other functions in the GROB menu are described following.
