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Version 1.9 Build 1556

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imagerpositiontest.dotests - Function

	Package	synthesis
	Module	synthesistester
	Tool	imagerpositiontest

Run the tests.

Synopsis
dotests()

Description
This is the heart of imagerpositiontest. It creates the simulator and the associated ms, creates and deconvolves the image, compares the source positions from the image to the known component positions, and summarizes these comparisons. The user may speicify numerous parameters prior to invoking dotests() via the many set_* functions, or may specify none at all, in which case sensible defaults are used.

Returns
T or fail

Example

# a very simple, default test
- include 'imagerpositiontest.g'
# construct an imagerpositiontest tool
- ipt := imagerpositiontest('scratchdir');
- ipt.dotests(); 
T
# view the restored image
- ipt.view();
- ipt.done();

Running dotests() using all defaults takes between 4 and 5 minutes on a Linux box with 4 500 MHz Xeon processors (only one used at a time in this implementation however) and 4 GB of RAM.

Here is a more elaborate test:

include 'imagerpositiontest.g';
ipt := imagerpositiontest();
ok := ipt.set_sim_parms(frequency='30GHz',docorrupt=F,nsources=10,nfields=4,
                        nchan=1,scalefactor=1.2,source_spread=0.9,
                        sourcedirection=dm.direction('J2000', '17h44m0.0', 
                                                     '50d0m0.000'));
ipt.set_deconvolution_function('mem');
ipt.set_mem_parms(algorithm='mfentropy',niter=20);
if(is_fail(ok)) {
    print ok::message;
    exit 1;
}
ok := ipt.dotests();
if(is_fail(ok)) {
    print ok::message;
    exit 1;
}
ipt.view();