| 1 | |
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| 2 | ################################################################################ |
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| 3 | #This software was developed by the University of Tennessee as part of the |
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| 4 | #Distributed Data Analysis of Neutron Scattering Experiments (DANSE) |
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| 5 | #project funded by the US National Science Foundation. |
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| 6 | # |
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| 7 | #See the license text in license.txt |
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| 8 | # |
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| 9 | #copyright 2009, University of Tennessee |
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| 10 | ################################################################################ |
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| 11 | |
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| 12 | import sys |
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| 13 | import time |
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| 14 | from sans.data_util.calcthread import CalcThread |
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| 15 | |
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| 16 | class CalcPr(CalcThread): |
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| 17 | """ |
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| 18 | Compute P(r) |
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| 19 | """ |
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| 20 | |
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| 21 | def __init__(self, pr, nfunc=5, error_func=None, |
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| 22 | completefn = None, |
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| 23 | updatefn = None, |
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| 24 | yieldtime = 0.01, |
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| 25 | worktime = 0.01 |
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| 26 | ): |
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| 27 | """ |
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| 28 | """ |
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| 29 | CalcThread.__init__(self,completefn, |
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| 30 | updatefn, |
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| 31 | yieldtime, |
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| 32 | worktime) |
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| 33 | self.pr = pr |
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| 34 | self.nfunc = nfunc |
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| 35 | self.error_func = error_func |
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| 36 | self.starttime = 0 |
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| 37 | |
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| 38 | def compute(self): |
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| 39 | """ |
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| 40 | Perform P(r) inversion |
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| 41 | """ |
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| 42 | try: |
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| 43 | self.starttime = time.time() |
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| 44 | out, cov = self.pr.invert(self.nfunc) |
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| 45 | #out, cov = self.pr.lstsq(self.nfunc) |
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| 46 | #out, cov = self.pr.invert_optimize(self.nfunc) |
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| 47 | elapsed = time.time()-self.starttime |
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| 48 | self.complete(out=out, cov=cov, pr=self.pr, elapsed=elapsed) |
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| 49 | except KeyboardInterrupt: |
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| 50 | # Thread was interrupted, just proceed |
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| 51 | pass |
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| 52 | except: |
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| 53 | if not self.error_func==None: |
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| 54 | self.error_func("CalcPr.compute: %s" % sys.exc_value) |
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| 55 | |
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| 56 | class EstimatePr(CalcThread): |
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| 57 | """ |
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| 58 | Estimate P(r) |
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| 59 | """ |
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| 60 | |
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| 61 | def __init__(self, pr, nfunc=5, error_func=None, |
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| 62 | completefn = None, |
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| 63 | updatefn = None, |
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| 64 | yieldtime = 0.01, |
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| 65 | worktime = 0.01 |
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| 66 | ): |
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| 67 | CalcThread.__init__(self,completefn, |
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| 68 | updatefn, |
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| 69 | yieldtime, |
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| 70 | worktime) |
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| 71 | self.pr = pr |
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| 72 | self.nfunc = nfunc |
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| 73 | self.error_func = error_func |
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| 74 | self.starttime = 0 |
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| 75 | |
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| 76 | def compute(self): |
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| 77 | """ |
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| 78 | Calculates the estimate |
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| 79 | """ |
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| 80 | try: |
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| 81 | alpha, message, elapsed = self.pr.estimate_alpha(self.nfunc) |
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| 82 | self.isquit() |
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| 83 | self.complete(alpha=alpha, message=message, elapsed=elapsed) |
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| 84 | except KeyboardInterrupt: |
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| 85 | # Thread was interrupted, just proceed |
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| 86 | pass |
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| 87 | except: |
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| 88 | if not self.error_func==None: |
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| 89 | self.error_func("EstimatePr.compute: %s" % sys.exc_value) |
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| 90 | |
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| 91 | class EstimateNT(CalcThread): |
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| 92 | """ |
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| 93 | """ |
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| 94 | def __init__(self, pr, nfunc=5, error_func=None, |
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| 95 | completefn = None, |
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| 96 | updatefn = None, |
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| 97 | yieldtime = 0.01, |
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| 98 | worktime = 0.01 |
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| 99 | ): |
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| 100 | CalcThread.__init__(self,completefn, |
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| 101 | updatefn, |
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| 102 | yieldtime, |
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| 103 | worktime) |
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| 104 | self.pr = pr |
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| 105 | self.nfunc = nfunc |
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| 106 | self.error_func = error_func |
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| 107 | self.starttime = 0 |
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| 108 | self._time_for_sleep = 0 |
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| 109 | self._sleep_delay = 1.0 |
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| 110 | |
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| 111 | |
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| 112 | def isquit(self): |
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| 113 | """ |
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| 114 | """ |
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| 115 | CalcThread.isquit(self) |
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| 116 | if time.time()>self._time_for_sleep+self._sleep_delay: |
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| 117 | time.sleep(.2) |
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| 118 | self._time_for_sleep = time.time() |
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| 119 | |
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| 120 | def compute(self): |
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| 121 | """ |
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| 122 | Calculates the estimate |
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| 123 | """ |
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| 124 | try: |
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| 125 | t_0 = time.time() |
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| 126 | self._time_for_sleep = t_0 |
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| 127 | nterms, alpha, message = self.pr.estimate_numterms(self.isquit) |
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| 128 | t_1 = time.time()-t_0 |
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| 129 | self.isquit() |
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| 130 | self.complete(nterms=nterms, alpha=alpha, message=message, elapsed=t_1) |
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| 131 | except KeyboardInterrupt: |
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| 132 | # Thread was interrupted, just proceed |
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| 133 | pass |
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| 134 | except: |
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| 135 | if not self.error_func==None: |
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| 136 | self.error_func("EstimatePr2.compute: %s" % sys.exc_value) |
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