ROI Design
RoiDesign is a tool for extracting information from design files and their
related time-series files. Currently this application supports output of
means for all levels of any two or more factors, graphical and text output.
Invocation
java RoiDesign [<design file> <time-series file>]
This starts up the java interpreter and runs the ROI Design
application. You need to have
set up your environment for java
in order for this to work. You can optionally give the design and
time-series files as arguments on the command line; if you don't, you
can enter them in the Files window.
Files window
In this window, you select the design and time-series text files
for ROI Design as well as factor names.
- Design file
Text file with ROI design levels and corresponding image files.
- Time-series file
Text file with time-series parameters.
- Factor names
Names to use as labels for factors. Be sure to leave a space between
different factor names, and don't use spaces within factor names. The
number of factor names must match the number of factors in the design
file.
In this window, you select factors by which to compute means.
- List design file info
Provides design file information such as the number of images, number
of factors, and the number of ROIs. This information is written to
the Output window.
- List factor levels
Lists all the levels for the selected factor and provides a count of
each level in the design file. This information is written to
the Output window.
- Show design file
Selecting "head" will print the first 10 lines of the design file
to the Output window. Selecting "tail" will print the last 10 lines of
this file to the Output window.
- Means by factors
This row allows the selection of an ROI and at least two factors which
are crossed by levels to produce a table and a graph of means by factors.
- Y Factor(s)
Selects the factor to be plotted as lines on the graph (one line per
level) and down on the table. If more than one Y factor is selected,
then the lines on the graph and the rows on the table represent all
the crossings of all the levels. At least one Y factor must be
selected.
- X Factor
Selects the factor to be plotted along the X axis of the graph and
across on the table.
- Calculate means
Produces a table and graph of means by factors.
- Save output...
Prompts for a filename, then writes the data from the table to the file
specified.
- Calculate percent difference
Produces a table and graph of percent differences from the given baseline
level.
- Quit
Quits the current Control Panel along with its associated Output window.
This does not quit the entire application; to do so, you must return to
the Files window and click on the Close button.
Output window
Results of running ROI Design. Any text output from the Control Panel
window will appear in this window.
Plots of factor means or percent differences by level combinations. In
these graphs, the Y axis shows for each combination of levels of the Y
factors (each combination represented as a line) the means of each level
of the X factor (represented as points along the line). This graph
currently can only display graphs in 9 different colors; as such, if
there are more than 9 lines, some colors will necessarily repeat.
Last updated Thu Aug 19 12:59:07 EDT 1999