Line Plot draws a simple line graph of a one-dimensional piece (line
segment) of a data set. That piece must be parallel to one of the coordinate
axes. It also notes the data value at three different locations along that
line segment with three sliders, which can also be used to control any
application in RGB mode.
Which line segment is determined by the linking in of a crosshair-containing
application. The line segment will pass through its linked-in crosshair.
Initially, the crosshair is assumed to be at the upper right corner of
a database.
Line Plot's display can be modified by a bounding
box. If a bounding box is present, the limits on a horizontal or vertical
plot will be those of the segment. Note that the main plot will still go
through the crosshair in the direction of the plot, so the area plotted
may be outside the bounding box in some cases. Line Plot can also plot
information about data within the bounding box as a group. See below (Menu)
for more information about that.
Controls
Buttons
Track mode (green is on) means that whenever a slider is moved, any application
to which Line Plot is linked will change its RGB levels if it is in RGB
mode. Send will update any such applications, particularly if track mode
is off.
Save will produce a text file called plot.txt with information about
the data in the plot.
The axis button determines to which coordinate axis the line segment
is parallel.
Sliders
The sliders control the three colored lines in the display and the numerical
output in the display area at the top of the application. They can also
be used to control RGB levels in applications that have RGB mode.
Menu
Normally, Line Plot plots a curve going through the crosshair. This plot
is in white. It can also plot information about a bounding box. If a bounding
box is linked in, Line Plot can plot the minimum value, maximum value,
and average value of the data within the bounding region. The min and max
are drawn in cyan; the average in yellow. How these values are determined
depends on which axis is being drawn. If the Z axis is being drawn, the
statistics (max, min, ave) are of the rectangular area within the bounding
box in the appropriate Z slice. If the X axis is being drawn, the statistics
are about a vertical 1-dimensional chunk of data within the current slice
at the appropriate X value, limited by the bounding box. Y-axis plots are
similar to X-axis plots.
The menu selections, "Crosshair Plot" and "Bounding Box Plot," control
which plot is drawn. Either, both, or neither can be drawn.
Applications to Connect to This Application
Image, Average,
Combine,
or Compare may be connected via the "drag
'n drop" button to this application. Sliders
control which slice contains the line segment if it is not parallel to
the depth (into the screen) axis.
Applications to Connect This Application to
Any application which has an RGB mode.
Tricks and Gotchas
Save will overwrite any plot.txt file in the current directory (from where
you started webwinds), so be careful to save any data you really need elsewhere.
WebWinds Home
/ Nov 5, 2001
