source: sasview/src/sas/models/Constant.py @ 79492222

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Last change on this file since 79492222 was 79492222, checked in by krzywon, 8 years ago

Changed the file and folder names to remove all SANS references.

  • Property mode set to 100644
File size: 1.3 KB
Line 
1"""
2    Provide constant function as a BaseComponent model
3"""
4
5from sas.models.BaseComponent import BaseComponent
6import copy
7
8class Constant(BaseComponent):
9    """
10    Class that evaluates a constant model.
11    List of default parameters:
12   
13    * value           = 1.0
14    """
15       
16    def __init__(self):
17        """ Initialization """
18       
19        # Initialize BaseComponent first, then sphere
20        BaseComponent.__init__(self)
21       
22        ## Name of the model
23        self.name = "Constant"
24        self.description = 'F(c)= c where c is a constant'
25        ## Parameter details [units, min, max]
26        self.details = {}
27        self.details['value'] = ['', None, None]
28        self.params['value'] = 1.0
29        #list of parameter that cannot be fitted
30        self.fixed = []
31    def clone(self):
32        """ Return a identical copy of self """
33        obj = Constant()
34        obj.params = copy.deepcopy(self.params)
35        return obj   
36   
37    def run(self, x = 0.0):
38        """ Evaluate the model
39            @param x: unused
40            @return: (constant value)
41        """
42        return self.params['value']
43   
44    def runXY(self, x = 0.0):
45        """ Evaluate the model
46            @param x: unused
47            @return: constant value
48        """
49        return self.params['value']
50   
51# End of file
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