Afni1deval
Afni1deval is a wrapper for the AFNI (RW Cox, NIH) 1deval application.
1deval -- Utility program to evaluate an arithemetic expression at a set of evenly spaced points in time.
AFNI 1deval was written by Robert W. Cox, Medical College of Wisconsin.
For more information about the AFNI package, see the AFNI Homepage
Currently, there is no postscript documentation for this program.
To read the help documentation generated from the command line go here.
To learn about afni data types follow this link.
Invocation
java Afni1deval
This starts up the java interpreter and runs the Afni1deval application.
You need to have set up your environment
for java in order for this to work.
Afni1deval window
Information to be entered
- 1deval variables...
The 1deval variables button will pop up another window when clicked.
This window is where you specify all your variables needed in your expression.
- 1deval variables... File
The File box will list the path of the file you selected by using the
variable specifier below.
- 1deval variables... File
This is where one specifies a file. One can either enter a pathname
in the textfield, or click the "Browse" button next to it to select a
.1D or .1Dx file
- 1deval variables... Variable
This field cannot be changed by the user. It will display what variable
name a file will be assigned when the "Add Variable" button is clicked.
- Expression
This is the field where you enter in your expression. The expressions that
1deval can use are the same as in 3dcalc.
Go here to find out more about expressions.
Sample Expressions
- sin(2 * PI * t / 40) -- sin wave with a period of 40
- t * t -- quadratic curve
- t ** 3 -- cubic curve
- Output file
This is the name of the file where the results will be written.
- Enable overwrites
The output file will be overwitten if it already exists.
- Display graph
This checkbox will enable the drawing of a graph of the generated time series.
- Step size
The variable in the expression is incremented by this value during each evaluation
- Iterations
This is the number of evaluations to perform. Note that this is needed if there are
no timeseries files used in the expression.
Last updated Tue Oct 08 17:59:04 EDT 2002