source: sasview/guitools/LineModel.py @ 4274c0e

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 4274c0e was 5ef6709, checked in by Gervaise Alina <gervyh@…>, 16 years ago

name of the model changed

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