ifplot
, conplot
, plot
, plotover
ifplot()
draws a graph of real zeros of a bi-variate
function.
Function conplot()
plots the contour lines for a same argument.
Function plot()
draws the graph of a uninivariate function.
These functions are available on UNIX version (on X11
).
ox_launch()
.
300
,300
] for UNIX version;
-2
,2
] for each variable.)
If this specification is omitted, the indeterminate having the higher
order in func is taken for `x' and the one with lower order
is taken for `y'. To change this selection, specify explicitly
by xrange and/or yrange.
For an uni-variate function, the specification is mandatory.
conplot()
. The format is
[v,vmin,vmax [
,step ]
].
If step is specified, the height difference of contours is set to
(vmax-vmin)/step.
([z,-2
,2
,16
].)
Plot
.)
The created window is titled name:n/m which means the m-th
window of the process with process number n.
These numbers are used for plotover()
.
plotover()
superposes reals zeros of its argument
bi-variate function onto the specified window.
precise
button switch is
inactive. If precise
is selected and active, the area specified
by the cursor dragging will be rewritten on the same window. This
will be explained later.
conplot()
,
and drag the cursor with the middle mutton. Then you will find the contour lines changing
their colors depending on the movement of the cursor and the
corresponding height level displayed on the upper right corner of
the window.
quit
ox_reset()
.
wide (toggle)
precise (toggle)
ox_plot
redraws the specified area more precisely by integer
arithmetic.
This mode uses bisection method based on Sturm sequence computation to
locate real zeros precisely. More precise plotting can be expected
by this technique than by the default plotting technique, at the expense
of significant increase of computing time. As you see by above
explanation, this function is only effective to polynomials with
rational coefficients.
(Check how they differ for (x^2+y^2-1)^2.)
formula
noaxis (toggle)
limit stacksize 16m
for an example.
X
, e.g.,
coloring, shape of buttons etc.
The default setting of resources is shown below.
For plot*form*shapeStyle
you can select among
rectangle, oval, ellipse, and roundedRectangle.
plot*background:white plot*form*shapeStyle:rectangle plot*form*background:white plot*form*quit*background:white plot*form*wide*background:white plot*form*precise*background:white plot*form*formula*background:white plot*form*noaxis*background:white plot*form*xcoord*background:white plot*form*ycoord*background:white plot*form*level*background:white plot*form*xdone*background:white plot*form*ydone*background:white
ox_launch
, ox_launch_nox
, ox_shutdown
, section ox_reset
,ox_intr
,register_handler
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