source: sasview/readers/TXT3_Reader.py @ d633f8b

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 d633f8b was ee5479d8, checked in by Gervaise Alina <gervyh@…>, 16 years ago
  • Property mode set to 100644
File size: 2.2 KB
Line 
1# class Loader  to load any king of file
2import wx
3import string,numpy
4class Reader:
5    """
6        This class is loading values from given file or value giving by the user
7    """
8   
9    def _init_(self,filename=None,x=None,y=None,dx=None,dy=None):
10        # variable to store loaded values
11        self.x = x
12        self.y = y
13        self.dx = dx
14        self.dy = dy
15        self.filename = filename
16       
17    def read(self,path, format=None):
18        """ Store the values loaded from file in local variables
19            can read 3 columns of data
20        """
21        if not path == None:
22            input_f =  open(path,'r')
23            buff = input_f.read()
24            lines = buff.split('\n')
25            self.x=[]
26            self.y=[]
27            self.dx = [] 
28            self.dy=[]
29            value="can't read" 
30            for line in lines:
31                toks = line.split()
32                try: 
33                    x = float(toks[0])
34                    y = float(toks[1]) 
35                    dy = float(toks[2])
36                   
37                    self.x.append(x)
38                    self.y.append(y)
39                    self.dy.append(dy)
40               
41                except:
42                    print "READ ERROR", line
43       
44                self.dx = numpy.zeros(len(self.x))
45                # Sanity check
46                if not len(self.x) == len(self.dx):
47                    raise ValueError, "x and dx have different length"
48                if not len(self.y) == len(self.dy):
49                    raise ValueError, "y and dy have different length"
50           
51            if (self.x==[] or self.y==[])and (self.dy==[]):
52                raise ValueError, "txtReader can't read"
53            else:
54                #msg="txtReader  Reading:\n"+"this x :"+ str(self.x) +"\n"+"this y:"+str(self.y)+"\n"+"this dy :"+str(self.dy)+"\n"
55                #return msg
56                print "TXT3_Reader reading: \n"
57                return self.x,self.y,self.dy
58               
59 
60if __name__ == "__main__": 
61    read= Reader()
62    #read= Reader(filename="testdata_line.txt")
63    print read.load("test.dat")
64   
65   
66           
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