source: sasview/src/sas/sasgui/plottools/LineModel.py @ 06dfd39

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 06dfd39 was d7bb526, checked in by Piotr Rozyczko <piotr.rozyczko@…>, 9 years ago

Refactored plottools into sasgui

  • Property mode set to 100644
File size: 2.1 KB
Line 
1#!/usr/bin/env python
2"""
3Provide Line function (y= A + Bx)
4"""
5
6import math
7
8class LineModel(object):
9    """
10    Class that evaluates a linear model.
11
12    f(x) = A + Bx
13
14    List of default parameters:
15    A = 0.0
16    B = 0.0
17    """
18
19    def __init__(self):
20        """ Initialization """
21        # # Name of the model
22        self.name = "LineModel"
23
24        # # Define parameters
25        self.params = {}
26        self.params['A'] = 1.0
27        self.params['B'] = 1.0
28
29        # # Parameter details [units, min, max]
30        self.details = {}
31        self.details['A'] = ['', None, None]
32        self.details['B'] = ['', None, None]
33
34    def getParam(self, name):
35        """
36            Return parameter value
37        """
38        return self.params[name.upper()]
39
40    def setParam(self, name, value):
41        """
42            Set parameter value
43        """
44        self.params[name.upper()] = value
45
46    def _line(self, x):
47        """
48        Evaluate the function
49
50        :param x: x-value
51
52        :return: function value
53
54        """
55        return  self.params['A'] + (x * self.params['B'])
56
57    def run(self, x=0.0):
58        """
59        Evaluate the model
60
61        :param x: simple value
62
63        :return: (Line value)
64        """
65        if x.__class__.__name__ == 'list':
66            return self._line(x[0] * math.cos(x[1])) * \
67                                self._line(x[0] * math.sin(x[1]))
68        elif x.__class__.__name__ == 'tuple':
69            msg = "Tuples are not allowed as input to BaseComponent models"
70            raise ValueError, msg
71        else:
72            return self._line(x)
73
74    def runXY(self, x=0.0):
75        """
76        Evaluate the model
77
78        :param x: simple value
79
80        :return: Line value
81
82        """
83        if x.__class__.__name__ == 'list':
84            return self._line(x[0]) * self._line(x[1])
85        elif x.__class__.__name__ == 'tuple':
86            msg = "Tuples are not allowed as input to BaseComponent models"
87            raise ValueError, msg
88        else:
89            return self._line(x)
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