Nisfilter
Nisfilter convolves and deconvolves vectors of data over time from Pgh-1.0 txyz format files with a provided filter.
Invocation
java Nisfilter
This starts up the java interpreter and runs the Nisfilter
application. You need to have
set up your environment for java
in order for this to work.
Nisfilter window
The filter must be a two-column text file of odd length and zero centered, like what Nishemo produces.
Information to be entered
- Input Dataset
The path to the Pgh-1.0 txyz file to be convolved, without .mri or .dat extension.
- Output Dataset
The filename results should be saved to, as a Pgh-1.0 txyz format file, without .mri or .dat appended.
- Filter file
Name of the file to be used as the odd-length, zero-centered filter.
- Convolve
Select this to convolve the Input Dataset with the filter.
- Deconvolve
Select this to deconvolve the filter from the Input Dataset.
- Rescale Filter
Check this box to account for the discretization of the filter (for instance, from a Gaussian curve to 11 discrete points) by rescaling the individual elements of the filter so that the sum is 1.
- Rescale Edges
Check this box to "correct" the edge effects of a discrete convolution by flattening out the edges of the output vectors.
- Verbose
Check this box to get warnings and progress information from the backend.
- Use an ASCII list of values as input
Use a list of values as input instead of a Pgh-1.0 txyz file, and write a list of values as output. The list of values will be processed as though it were a single t-vector in a dataset.
Last updated Mon Aug 21 10:13:02 EST 2000