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<H1><A NAME="SECTION004100000000000000000"> </A><A NAME="twoDwin"> </A><A NAME="2-D_view_window"> </A><A NAME="window__2-D_view"> </A><A NAME="658"> </A><A NAME="659"> </A>
<BR>
The 2-D View Window
</H1>
<BR>
<DIV ALIGN="CENTER"><A NAME="twoD"> </A><A NAME="698"> </A>
<TABLE WIDTH="50%">
<CAPTION><STRONG>Figure 2.10:</STRONG>
The 2-D View window.</CAPTION>
<TR><TD>23#23</TD></TR>
</TABLE>
</DIV>
<BR>
<P>
<DL>
<DD><P>
<DT><STRONG>Window title:</STRONG>
<DD>DsTool: 2-D View #<I>n</I>
<DT><STRONG>Function:</STRONG>
<DD>The 2-D View window graphically displays computed data.
<DT><STRONG>Description:</STRONG>
<DD>The 2-D View window is opened by selecting the 2-D View
option from the Panels menu button located in the Command window.
Unlike the 1-D View window, a 2-D View window can always be opened,
regardless of the number of phase space variables of the system.
The user can select the plotting coordinates from all available
variables, parameters, and auxiliary functions for the current
dynamical system. Additionally, the range of each axis is displayed,
and the size of the window and various other plotting options may be
specified. Multiple 2-D View windows can be open simultaneously,
and each may plot with different coordinates.
<P>
When the window is open, data is displayed as it is computed.
When the user resizes<A NAME="666"> </A> the window, the current variable ranges are
maintained, but the scaling is adjusted accordingly.
<P>
As the user moves the mouse in the drawing canvas, the current
coordinates<A NAME="667"> </A>
of the mouse position<A NAME="668"> </A> are displayed in the window's
panel. This region is blank when the mouse does not point
into the canvas.
Mouse events in the main drawing canvas have the following
effects:
<UL>
<LI>
The SELECT<A NAME="670"> </A>
button sets the direction of the integrator or iterator to ``forward.'' It
also reads the values indicated by the cursor. If one
or both of these values are variables or
parameters, these values are adjusted in the Selected Point window.
<P>
<LI>
Dragging the SELECT button while holding down SHIFT creates an elastic rectangle used
to rescale<A NAME="671"> </A> the window. When the user releases SELECT, a notice
appears with the options to enlarge the
view (the default, also known as ``zoom in'')<A NAME="672"> </A>,
shrink the view (also known as ``zoom out''),
or cancel the selection. If the enlarge option is selected, the scaling is
adjusted so that the selected region fills the canvas. If the
shrink option is selected, the view is rescaled so that
the whole view is put into the selected rectangle. The
values in the ordinate and abscissa Min and Max text fields
are updated automatically and a screen refresh is performed.
<LI>
Dragging the SELECT button while holding down CONTROL creates an elastic
rectangle used to input a region for the Multiple Orbits window. See
Section <A HREF="node27.html#MultOrbWin"><IMG ALIGN="BOTTOM" BORDER="1" ALT="[*]"
SRC="/usr/lib/latex2html/icons.gif/cross_ref_motif.gif"></A> for details on this operation.
<A NAME="674"> </A>
<LI>
The MENU<A NAME="675"> </A> button
sets the direction of the integrator or iterator to ``backward.'' It
also reads the values indicated by the cursor. If one
or both of these values are variables or
parameters, these values are adjusted in the Selected Point window.
<LI>
Clicking the ADJUST<A NAME="676"> </A> button is equivalent to selecting
the Continue button on the Orbits window.
</UL>
<DT><STRONG>Panel items:</STRONG>
<DD>
<UL>
<LI>Hor stack setting:
Allows the user to choose the coordinate of the abscissa.
The user may choose between all variables (including the independent
variable), all parameters, and all auxiliary functions.
The three text fields to the right of the hor stack setting are
the Hor min read-write text field, the Mouse abscissa position
read-only text field, and the Hor max read-write text field.
<LI>Hor min read-write text field:
Displays the current minimum value of the displayed
range of the abscissa.
<LI>Mouse abscissa position read-only text field:
Displays the current abscissa value of the mouse. If the mouse does not
point into the canvas, this region is blank.
<LI>Hor max read-write text field:
Displays the current maximum value of the displayed
range of the abscissa.
<LI>Ver stack setting:
Allows the user to choose the coordinate of the ordinate.
The user has the same choices as for the Hor stack setting.
The three text fields to the right of the ver stack setting
are the Ver min read-write text field, the Mouse ordinate
position read-only text field, and the Ver max read-write text field.
<LI>Ver min read-write text field:
Displays the current minimum value of the displayed
range of the ordinate.
<LI>Mouse ordinate position read-only text field:
Displays the current ordinate value of the mouse. If the mouse does not
point into the canvas, this region is blank.
<LI>Ver max read-write text field:
Displays the current maximum value of the displayed
range of the ordinate.
<LI>Options menu button:
<DL>
<DT><STRONG>Color:</STRONG>
<DD><A NAME="681"> </A><A NAME="682"> </A>
Opens and brings to the foreground the Color window.
<DT><STRONG>Continuation Colors:</STRONG>
<DD><A NAME="683"> </A><A NAME="684"> </A>
Opens and brings to the foreground the Continuation Colors window.
<DT><STRONG>Print:</STRONG>
<DD><A NAME="685"> </A><A NAME="686"> </A>
Opens and brings to the foreground the Print window.
<DT><STRONG>Snapshot:</STRONG>
<DD><A NAME="687"> </A><A NAME="688"> </A>
Opens and brings to the foreground the Snapshot window.
</DL>
<LI>Window sizes menu button:
<DL>
<DT><STRONG>Scale to fit:</STRONG>
<DD><A NAME="691"> </A>
Sets the abscissa and ordinate ranges so that all of the computed
data points lie within a box centered in the canvas with a padding on each side.
See section <A HREF="node23.html#window__defaults"><IMG ALIGN="BOTTOM" BORDER="1" ALT="[*]"
SRC="/usr/lib/latex2html/icons.gif/cross_ref_motif.gif"></A> for a description of how to control the parameter
involved. The canvas is refreshed after the user selects this option.
<DT><STRONG>Set current to default:</STRONG>
<DD>Sets the abscissa and ordinate ranges to their
default values. The canvas is refreshed after the users selects this option.
<DT><STRONG>Set default to current:</STRONG>
<DD>Sets the abscissa and ordinate default ranges to
the current range.
</DL>
<LI>Pick color exclusive setting:<A NAME="694"> </A>
Allows the user to choose whether points which are plotted in this
2-D View window will be plotted using their ``pick color'',
or their ``alternating color''.
<LI>Refresh command button:
Clears the drawing canvas and redraws with the appropriate
projection of currently stored data as selected by the user in
the above settings.
<LI>Clear command button:
Clears trajectory data from memory, and refreshes the canvas according
to the above settings.
<LI>Dismiss command button:
Closes the 2-D View window.
</UL></DL><HR>
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<ADDRESS>
<I>John Lapeyre</I>
<BR><I>1998-09-04</I>
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