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test_fsig.py

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  • Forked from finesse / pykat
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    • Daniel Brown's avatar
      4d173029
      adding in fsig command (not parsing yet). See example test_fsig.py in bin... · 4d173029
      Daniel Brown authored
      adding in fsig command (not parsing yet). See example test_fsig.py in bin folder. Also made component variable an optional argument for xaxis and x2axis which will break previous scripts. Did this as when setting the parameter to tune, the Param object contains whatever component owns that parameter so no need to pass it twice. Also stops someone passing a parameter not for the component stated.
      4d173029
      History
      adding in fsig command (not parsing yet). See example test_fsig.py in bin...
      Daniel Brown authored
      adding in fsig command (not parsing yet). See example test_fsig.py in bin folder. Also made component variable an optional argument for xaxis and x2axis which will break previous scripts. Did this as when setting the parameter to tune, the Param object contains whatever component owns that parameter so no need to pass it twice. Also stops someone passing a parameter not for the component stated.
    asc_pd_phase.py 1.07 KiB
    import copy
    import sys
    import scipy.optimize
    
    from pykat import finesse
    
    def run(tmpkat):
    
        kat = copy.deepcopy(tmpkat)
        
        code_det = """
        pd1 PDrefl_q 9M 90 nWFS1
        %scale 2 PDrefl_q
        """
        
        kat.parseKatCode(code_det)
        kat.noxaxis= True
    
        # function for root finding
        def PD_q_test(x):
            kat.PDrefl_q.phi[0]=x
            out = kat.run(printout=0,printerr=0)
            print '\r root finding: function value %g                    ' % out.y,
            sys.stdout.flush()
            return out.y
    
        # do root finding
        xtol=1e-8
        (result, info)=scipy.optimize.bisect(PD_q_test,80.0,100.0, xtol=xtol, maxiter=500, full_output=True)
    
        print ""
        if info.converged:
            p_phase=result-90.0
            q_phase=result
            print " Root has been found:"
            print " p_phase %8f" % (p_phase)
            print " q_phase %8f" % (q_phase)
            print " (%d iterations, %g tolerance)" % (info.iterations, xtol)
            return (p_phase, q_phase)
        else:
            raise Exception("Root has not been found")