ESS_GUIESS_GUI_DocsESS_GUI_batch_fittingESS_GUI_bumps_abstractionESS_GUI_iss1116ESS_GUI_iss879ESS_GUI_iss959ESS_GUI_openclESS_GUI_orderingESS_GUI_sync_sascalccostrafo411magnetic_scattrelease-4.1.1release-4.1.2release-4.2.2release_4.0.1ticket-1009ticket-1094-headlessticket-1242-2d-resolutionticket-1243ticket-1249ticket885unittest-saveload
Last change
on this file since f80236f was
9ce41c6,
checked in by Gervaise Alina <gervyh@…>, 15 years ago
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wrote unittest for all model untested , haven' test critial point error handling
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-
Property mode set to
100644
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File size:
1.1 KB
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Rev | Line | |
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[9ce41c6] | 1 | #!/usr/bin/env python |
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| 2 | """ |
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| 3 | Provide F(x) = scale* (|x|)^(-m) + bkd |
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| 4 | Power law function as a BaseComponent model |
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| 5 | """ |
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| 6 | |
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| 7 | from sans.models.PowerLawModel import PowerLawModel |
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| 8 | import math |
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| 9 | class PowerLawAbsModel(PowerLawModel): |
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| 10 | """ |
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| 11 | Class that evaluates a absolute Power_Law model. |
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| 12 | |
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| 13 | F(x) = scale* (|x|)^(-m) + bkd |
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| 14 | |
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| 15 | The model has three parameters: |
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| 16 | m = power |
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| 17 | scale = scale factor |
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| 18 | bkd = incoherent background |
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| 19 | """ |
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| 20 | |
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| 21 | def __init__(self): |
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| 22 | """ Initialization """ |
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| 23 | # Initialize PowerLawAbsModel |
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| 24 | PowerLawModel.__init__(self) |
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| 25 | ## Name of the model |
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| 26 | self.name = "Absolute Power_Law" |
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| 27 | self.description=""" The Power_Law model. |
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| 28 | F(x) = scale* (|x|)^(-m) + bkd |
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| 29 | |
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| 30 | The model has three parameters: |
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| 31 | m = power |
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| 32 | scale = scale factor |
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| 33 | bkd = incoherent background""" |
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| 34 | |
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| 35 | |
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| 36 | def _PowerLaw(self, x): |
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| 37 | return PowerLawModel._PowerLaw(self, math.fabs(x)) |
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| 38 | |
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