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<HTML>
<HEAD>
<TITLE>Xmgr: data operations</TITLE>
</HEAD>
<BODY>
<h2><a NAME="data">Data operations</a></h2>
Access the command line interpreter,
describe the status of data sets, graphs and regions, display
results of computations and other operations, perform transformations, set
operations, point operations, region operations, block data management.
<h3> <a NAME="status">Status</a> </h3>
<p>
The <b>Status</b> popup displays useful information about the state of
sets, regions, and graphs. In addition to this, several useful operations
are provided to manipulate sets and graphs.
<p>
At the bottom of the popup are the controls for displaying what
appears in the top portion of the popup. Directly this above is a panel that
provides operations on the objects displayed in the scrolled region.
<p>
Staring with the bottom panel, from left to right, the selections are:
<p>
<dl>
<dd><b>Close</b>
<dt> Close the <b>Status</b> popup.
<dd><b>Update</b>
<dt> Freshen up the status display.
<dd><b>Write</b>
<dt> Write the contents of the status display to the <b>Results</b> popup, from
there, the information provided by <B>Status</b> can be written to disk.
<dd><b>Page+</b>
<dt> Page forward through the status display. There is a limit as to how
many sets can be displayed in the <b>Status</b> popup at one time. By
default, the maximum is 30. When the number of sets is less than 30, this
button is not needed, use the scroll bars to view the status of the sets that
are not shown in the display.
<dd><b>Page-</b>
<dt> Page backward through the status display. There is a limit as to how
many sets can be displayed in the <b>Status</b> display region at one time. By
default, the maximum is 30. When the number of sets is less than 30, this
button is not needed, use the scroll bars to view the status of the sets that
are not shown in the display.
<dd><b>Home</b>
<dt> Go to the first page of the status display.
<dd><b>End</b>
<dt> Go to the last page of the status display.
<dd><b>Adjust</b>
<dt> Adjust the width of the status window to completely show the longest
comment.
<dd><b>Display</b>
<dt> An option menu used to select the object types to view, sets, graphs,
or regions. The operations panel directly above will change as the object
type in this item is changed.
</dl>
<HR>
Operations in the <b>Status</b> popup are performed by clicking on the
operation, then clicking on one or more set numbers shown in the display.
There is a status line provided that will give a bit of help on what
actions to take to perform a given operation. Generally, the cursor will
change to reflect the nature of the operation.
<p>
When the selection for <b>Display</b> is <b>Sets</b>, the operations provided
are:
<dl>
<dd><b>Kill</b>
<dt> Clicking on <b>Kill</b> activates the pointer such that clicking on a
set number shown in the display of the <b>Status</b> popup kills the set.
After a set is <b>Kill</b>'ed, the point remains hot, the <b>Kill</b>
operation can be performed again, until the <b>Cancel</b> button
is pressed.
<dd><b>Soft kill</b>
<dt> This is the same as <b>Kill</b> except that all parameters are
preserved.
<dd><b>Deact</b>
<dt> Clicking on <b>Deact</b> followed by clicking on a set number in the
scrolled window will deactivate the set (deactivation merely hides the
set, the data are not released). The function can be useful when there are
lots of sets being drawn, and the interest is in a subset of the sets
being display in the drawing area.
<dd><b>React</b>
<dt> Clicking on <b>React</b> followed by clicking on a set number in the
scrolled window will reactivate the set if it has previously be deactivated.
<dd><b>Copy</b>
<dt> Clicking on <b>Copy</b> followed by clicking on a set number in the
scrolled window will select the set to copy from. Click again on another set
number to perform the copy. One trick that can be performed here is that
this operation can be used to copy sets from one graph to another by
changing the current graph. The current graph must be changed by either
clicking on the graph to receive the focus on the drawing area, or using
<b>Graph/Graph operations</b>.
<dd><b>Move</b>
<dt> Clicking on <b>Move</b> followed by clicking on a set number in the
scrolled window will select the set to move. Click again on another set
number to perform the move. One trick that can be performed here is that
this operation can be used to move sets from one graph to another by
changing the current graph. The current graph must be changed by either
clicking on the graph to receive the focus on the drawing area, or using
<b>Graph/Graph operations</b>.
<dd><b>Auto</b>
<dt> Clicking on <b>Auto</b> followed by clicking on a set number in the
scrolled window will select autoscale the graph axes such that the set in
its entirety is displayed in the drawing area.
<dd><b>Reverse</b>
<dt> Clicking on <b>Reverse</b> followed by clicking on a set number in the
scrolled window will select reverse the order of the points in the set.
<dd><b>Reverse</b>
<dt> Clicking on <b>Join</b> followed by clicking on a set number in the
scrolled window will select the set to join to, Click again on another
set number to complete the join.
<dd><b>Pack</b>
<dt> Clicking on <b>Pack</b> renumbers sets such that there are no gaps in the
set structure. If the active sets are 0, 3, 5, following the pack operation,
the sets will be numbered 0, 1, 2.
<dd><b>Cancel</b>
<dt> Clicking on <b>Cancel</b> cancels any of the operations above that
require more than a single set to function (Copy, Move, Join). Also,
most of the operations stay in effect until <b>Cancel</b> is pressed.
<dd><b>Auto redraw</b>
<dt> Controls whether or not xmgr redraws its canvas after each set
operation in the status window. This takes effect only if the global
auto redraw option is on (in Options->Draw options).
</dl>
<HR>
<p>
When the selection for <b>Display</b> is <b>Graphs</b>, the operations provided
are:
<dl>
<dd><b>Activate</b>
<dt> Clicking on <b>Activate</b> then clicking on a graph number activates the
graph.
<dd><b>Copy</b>
<dt> Clicking on <b>Copy</b> then clicking on a graph number selects the
graph to copy from. Clicking on another graph selects the graph to copy
to.
<dd><b>Move</b>
<dt> Clicking on <b>Move</b> then clicking on a graph number selects the
graph to move from. Clicking on another graph selects the graph to move
to.
<dd><b>Swap</b>
<dt> To swap 2 graphs, click on <b>Swap</b> then click on a graph number
to select the first graph, then click again on the second graph to perform
the swap.
<dd><b>Hide</b>
<dt> To hide a graph, click on <b>Hide</b> then click on a graph number.
<dd><b>Show</b>
<dt> To undo the effect of <b>Hide</b>, click on <b>Show</b> then click on a
graph number.
<dd><b>Focus</b>
<dt> To set the graph focus (the graph with the focus is referred to as
the current graph), click on <b>Focus</b> then click on a graph number.
<dd><b>Kill</b>
<dt> To kill a graph, click on <b>Kill</b> then click on a graph number.
<dd><b>Cancel</b>
<dt> Cancel operations that require 2 selections and take the pointer
out of whatever operation was previously selected.
</dl>
<HR>
<p>
When the selection for <b>Display</b> is <b>Regions</b>, no operations are
provided at the present time.
<p>
<HR>
<h3> <a NAME="results">Results</a> </h3>
<p>
Display the results of the regression routine and the output of the `Write'
button in File/ Status in the monitor window.
<p>
<HR>
<h3> <a NAME="commands">Command interpreter</a> </h3>
<p>
Command driven version of the interface to xmgr. Here, commands are typed at
the `Command:' text item and executed when < return > is entered. The
command will be parsed and executed, and if no errors are found, the command
line is placed in the history list. Items in the history list can be recalled
by simply clicking on them with the left mouse button.
The button actions are
<p>
<dl>
<dt> Save...
<dd> Save the command history list to a file
<dt> Read...
<dd> Insert commands into the history list from a file
<dt> Clear
<dd>Clear the history list
<dt> Replay
<dd>Replay the commands in the history list
<dt> Add
<dd>Add the command text to the history list at the
selected position without executing the command
<dd>Shortcut: Shift-Return
<dt> Replace
<dd>Replace the selected history entry with the command line text without
executing the text
<dd>Shortcut: Shift-Ctrl-Return
<dt> Delete
<dd>Delete the selected history list entry
<dd>Shortcut: Shift-BackSpace
<dt> Up
<dd>Move an entry up in the history list
<dd>Shortcut: Shift-Up
<dt> Down
<dd>Move an entry down in the history list
<dd>Shortcut: Shift-Down
<dt> Close
<dd>Close the window
<dt> Help
<dd>Display help on using the Command window
</dl>
<hr>
<h3> <a NAME="blockdata">Block data</a> </h3>
<p>
Create sets from block data. Select the type of set and the columns to use for
each vector of the new set. Press <b>Accept</b> to create the set. Note that
reading block data does not affect the scaling of the graph so when a set is
created using this popup, the set may not appear within the graph's scaling
limits - use AS (Autoscale) to set the scale of the graph if needed (or use
View/Define world).
</BODY>
</HTML>
|
