fitDialog.py @ edce46e

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 edce46e was b43a009, checked in by Gervaise Alina <gervyh@…>, 16 years ago
some modificatiosn made
Property mode set to `100644`
File size: 15.4 KB

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1	#!/usr/bin/python
2
3	# fitDialog.py
4
5	import wx
6	from PlotPanel import PlotPanel
7	from plottables import Theory1D
8	import math,pylab,fittings
9	import transform
10
11
12	class LinearFit(wx.Dialog):
13	def __init__(self, parent, plottable, push_data,transform, id, title):
14	wx.Dialog.__init__(self, parent, id, title, size=(450, 400))
15	"""
16	Dialog window pops- up when select Linear fit on Context menu
17	Displays fitting parameters
18	"""
19	self.parent = parent
20	self.transform = transform
21	#dialog panel self call function to plot the fitting function
22	self.push_data = push_data
23	#dialog self plottable
24
25	self.plottable = plottable
26	# Receive transformations of x and y
27	self.xLabel,self.yLabel,self.Avalue,self.Bvalue,\
28	self.ErrAvalue,self.ErrBvalue,self.Chivalue= self.transform()
29	#Dialog interface
30	panel = wx.Panel(self, -1, style=wx.SIMPLE_BORDER)
31	vbox = wx.BoxSizer(wx.VERTICAL)
32	sizer = wx.GridBagSizer(5,5)
33
34	vbox.Add(panel, 1, wx.EXPAND \| wx.ALL)
35
36	self.tcA = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
37	self.tcErrA = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
38	self.tcB = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
39	self.tcErrB = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
40	self.tcChi = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
41	self.FXmin = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
42	self.FXmax = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
43	self.FXminX = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
44	self.FXmaxX = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
45	self.PXmin = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
46	self.PXmax = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
47	self.btFit =wx.Button(panel,-1,'Fit',size=(120, 30))
48	self.btClose =wx.Button(panel, wx.ID_CANCEL,'Close',size=(90, 30) )
49	self.static_line_1 = wx.StaticLine(panel, -1)
50
51	ix = 0
52	iy = 1
53	sizer.Add(wx.StaticText(panel, -1, 'y = Ax +B'),(iy, ix),(1,1),\
54	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
55	iy+=1
56	sizer.Add(wx.StaticText(panel, -1, 'Param A'),(iy, ix),\
57	(1,1), wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
58	ix += 1
59	sizer.Add(self.tcA,(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
60	ix += 1
61	sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
62	ix += 1
63	sizer.Add(self.tcErrA, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
64	iy += 1
65	ix = 0
66	sizer.Add(wx.StaticText(panel, -1, 'Param B'),(iy, ix),(1,1),\
67	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
68	ix += 1
69	sizer.Add(self.tcB, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
70	ix += 1
71	sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
72	ix += 1
73	sizer.Add(self.tcErrB, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
74	iy += 1
75	ix = 0
76	sizer.Add(wx.StaticText(panel, -1, 'Chi ^{2}'),(iy, ix),(1,1),\
77	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
78	ix += 1
79	sizer.Add(self.tcChi, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
80	iy += 1
81	ix = 1
82	sizer.Add(wx.StaticText(panel, -1, 'Xmin'),(iy, ix),(1,1),\
83	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
84	ix += 2
85	sizer.Add(wx.StaticText(panel, -1, 'Xmax'),(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
86	iy += 1
87	ix = 0
88	sizer.Add(wx.StaticText(panel, -1, 'Plotted Range'),(iy, ix),(1,1),\
89	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
90	ix +=1
91	sizer.Add(self.PXmin, (iy, ix),(1,1),\
92	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
93	ix += 2
94	sizer.Add(self.PXmax, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
95
96	iy += 1
97	ix = 0
98	sizer.Add(wx.StaticText(panel, -1, 'Fit Range of '+self.xLabel),(iy, ix),(1,1),\
99	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
100	ix += 1
101	sizer.Add(self.FXmin, (iy, ix),(1,1),\
102	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
103	ix += 2
104	sizer.Add(self.FXmax, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
105
106	iy += 1
107	ix = 0
108	sizer.Add(wx.StaticText(panel, -1, 'Fit Range of x'),(iy, ix),(1,1),\
109	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
110	ix += 1
111	sizer.Add(self.FXminX, (iy, ix),(1,1),\
112	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
113	ix += 2
114	sizer.Add(self.FXmaxX, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
115	iy += 1
116	ix = 1
117
118	sizer.Add(self.btFit, (iy, ix),(1,1), wx.LEFT\|wx.ADJUST_MINSIZE, 0)
119	self.btFit.Bind(wx.EVT_BUTTON, self._onFit)
120	ix += 2
121	sizer.Add(self.btClose, (iy, ix),(1,1),\
122	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
123
124	panel.SetSizer(sizer)
125	self.SetSizer(vbox)
126	self.Centre()
127
128	# Receives the type of model for the fitting
129	from LineModel import LineModel
130	self.model = LineModel()
131
132	#Display the fittings values
133	self.default_A = self.model.getParam('A')
134	self.default_B = self.model.getParam('B')
135	self.cstA = fittings.Parameter(self.model, 'A', self.default_A)
136	self.cstB = fittings.Parameter(self.model, 'B', self.default_B)
137
138	# Set default value of parameter in fit dialog
139
140	if self.Avalue==None:
141	self.tcA.SetLabel(str(self.default_A))
142	else :
143	self.tcA.SetLabel(str(self.Avalue))
144	if self.Bvalue==None:
145	self.tcB.SetLabel(str(self.default_B))
146	else:
147	self.tcB.SetLabel(str(self.Bvalue))
148	if self.ErrAvalue==None:
149	self.tcErrA.SetLabel(str(0.0))
150	else:
151	self.tcErrA.SetLabel(str(self.ErrAvalue))
152	if self.ErrBvalue==None:
153	self.tcErrB.SetLabel(str(0.0))
154	else:
155	self.tcErrB.SetLabel(str(self.ErrBvalue))
156	if self.Chivalue==None:
157	self.tcChi.SetLabel(str(0.0))
158	else:
159	self.tcChi.SetLabel(str(self.Chivalue))
160	if self.plottable.x !=[]:
161	self.mini =min(self.plottable.x)
162	self.maxi =max(self.plottable.x)
163
164	self.FXmin.SetLabel(str(self.mini))
165	self.FXmax.SetLabel(str(self.maxi))
166	self.FXmin.Disable()
167	self.FXmax.Disable()
168
169	self.PXmin.SetValue(str(self.mini))
170	self.PXmax.SetValue(str(self.maxi))
171	self.PXmin.Disable()
172	self.PXmax.Disable()
173
174	self.FXminX.SetLabel(str(self.mini))
175	self.FXmaxX.SetLabel(str(self.maxi))
176
177
178	def _onFit(self ,event):
179	"""
180	Performs the fit. Receive an event when clicking on the button Fit.Computes chisqr ,
181	A and B parameters of the best linear fit y=Ax +B
182	Push a plottable to
183	"""
184	tempx=[]
185	tempy=[]
186	tempdy = []
187
188	#store the values of View in x,y, dx,dy
189	x,y,dx,dy=self.plottable.returnValuesOfView()
190
191	# Check if View contains a x array .we online fit when x exits
192	# makes transformation for y as a line to fit
193	if x != []:
194
195
196	if(self.checkFitValues(self.FXminX) == True):
197	#Check if the field of Fit Dialog contain values and use the x max and min of the user
198	xmin,xmax = self._checkVal(self.FXminX.GetValue(),self.FXmaxX.GetValue())
199
200	xminView=self.floatTransform(xmin)
201	xmaxView=self.floatTransform(xmax)
202	if (self.xLabel=="log10(x)"):
203	self.FXmin.SetValue(str(math.log10(xminView)))
204	self.FXmax.SetValue(str(math.log10(xmaxView)))
205	else:
206	self.FXmin.SetValue(str(xminView))
207	self.FXmax.SetValue(str(xmaxView))
208	self.FXmin.Disable()
209	self.FXmax.Disable()
210	# Store the transformed values of view x, y,dy in variables before the fit
211	if self.yLabel.lower() == "log10(y)":
212	if (self.xLabel.lower() == "log10(x)"):
213	for i in range(len(x)):
214	if x[i]>= math.log10(xmin):
215	tempy.append(math.log10(y[i]))
216	tempdy.append(transform.errToLogX(y[i],0,dy[i],0))
217	else:
218	for i in range(len(y)):
219	tempy.append(math.log10(y[i]))
220	tempdy.append(transform.errToLogX(y[i],0,dy[i],0))
221	else:
222	tempy = y
223	tempdy = dy
224
225	if (self.xLabel.lower() == "log10(x)"):
226	for x_i in x:
227	if x_i >= math.log10(xmin):
228	tempx.append(math.log10(x_i))
229	else:
230	tempx = x
231
232	#Find the fitting parameters
233
234	if (self.xLabel.lower() == "log10(x)"):
235	chisqr, out, cov = fittings.sansfit(self.model, [self.cstA, self.cstB],
236	tempx, tempy,tempdy,math.log10(xmin),math.log10(xmax))
237	else:
238	chisqr, out, cov = fittings.sansfit(self.model,
239	[self.cstA, self.cstB],tempx, tempy,tempdy,xminView,xmaxView)
240	#print "this out",out
241	#Check that cov and out are iterable before displaying them
242	if cov ==None:
243	errA =0.0
244	errB =0.0
245	else:
246	errA= math.sqrt(cov[0][0])
247	errB= math.sqrt(cov[1][1])
248	if out==None:
249	cstA=0.0
250	cstB=0.0
251	else:
252	cstA=out[0]
253	cstB=out[1]
254	# Reset model with the right values of A and B
255	self.model.setParam('A', float(cstA))
256	self.model.setParam('B', float(cstB))
257
258	tempx = []
259	tempy = []
260	y_model = 0.0
261	# load tempy with the minimum transformation
262
263	if self.xLabel == "log10(x)":
264	y_model = self.model.run(math.log10(xmin))
265	tempx.append(xmin)
266	else:
267	y_model = self.model.run(xminView)
268	tempx.append(xminView)
269
270	if self.yLabel == "log10(y)":
271	tempy.append(math.pow(10,y_model))
272	print "tempy",tempy
273	else:
274	tempy.append(y_model)
275
276	# load tempy with the maximum transformation
277	if self.xLabel == "log10(x)":
278	y_model = self.model.run(math.log10(xmax))
279	tempx.append(xmax)
280	else:
281	y_model = self.model.run(xmaxView)
282	tempx.append(xmaxView)
283
284	if self.yLabel == "log10(y)":
285	tempy.append(math.pow(10,y_model))
286	else:
287	tempy.append(y_model)
288	self.Avalue=cstA
289	self.Bvalue=cstB
290	self.ErrAvalue=errA
291	self.ErrBvalue=errB
292	self.Chivalue=chisqr
293	self.push_data(tempx,tempy,xminView,xmaxView,xmin,xmax,self._ongetValues())
294
295	# Display the fitting value on the Fit Dialog
296	self._onsetValues(cstA, cstB, errA,errB,chisqr)
297
298
299
300	def _onsetValues(self,cstA,cstB,errA,errB,Chi):
301	"""
302	Display the value on fit Dialog
303	"""
304	self.tcA.SetValue(str(cstA))
305	self.tcB.SetValue(str(cstB))
306	self.tcErrA.SetValue(str(errA))
307	self.tcErrB.SetValue(str(errB))
308	self.tcChi.SetValue(str(Chi))
309
310	def _ongetValues(self):
311	"""
312	Display the value on fit Dialog
313	"""
314	return self.Avalue, self.Bvalue,self.ErrAvalue,self.ErrBvalue,self.Chivalue
315
316	def _returnPlottable(self):
317	return self.file_data1
318
319	def _checkVal(self,usermin, usermax):
320	"""
321	Ensure that fields parameter contains a min and a max value
322	within x min and x max range
323	"""
324	if float(usermin) < float(usermax):
325	if float(usermin) >= float(self.mini) and float(usermin) < float(self.maxi):
326	self.FXminX.SetValue(str(usermin))
327	else:
328	self.FXminX.SetValue(str(self.mini))
329
330	if float(usermax) > float(self.mini) and float(usermax) <= float(self.maxi):
331	self.FXmaxX.SetLabel(str(usermax))
332	else:
333	self.FXmaxX.SetLabel(str(self.maxi))
334
335	mini =float(self.FXminX.GetValue())
336	maxi =float(self.FXmaxX.GetValue())
337
338	return mini, maxi
339	def floatTransform(self,x):
340	"""
341	transform a float.It is use to determine the x.View min and x.View max for values
342	not in x
343	"""
344	if ( self.xLabel=="x" ):
345	return transform.toX(x)
346
347	if ( self.xLabel=="x^(2)" ):
348	return transform.toX2(x)
349
350	if (self.xLabel=="log10(x)" ):
351	if x >0:
352	return x
353	else:
354	raise ValueError,"cannot compute log of a negative number"
355
356	def checkFitValues(self,item):
357	"""
358	Check the validity of input values
359	"""
360	flag = True
361	value = item.GetValue()
362	# Check for possible values entered
363	if (self.xLabel=="log10(x)"):
364	if (float(value) > 0):
365	item.SetBackgroundColour(wx.WHITE)
366	item.Refresh()
367	else:
368	flag = False
369	item.SetBackgroundColour("pink")
370	item.Refresh()
371
372	return flag
373
374	def setFitRange(self,xmin,xmax,Reelxmin,Reelxmax):
375	if (self.xLabel=="log10(x)"):
376	self.FXmin.SetValue(str(math.log10(xmin)))
377	self.FXmax.SetValue(str(math.log10(xmax)))
378	else:
379	self.FXmin.SetValue(str(xmin))
380	self.FXmax.SetValue(str(xmax))
381	self.FXminX.SetValue(str(Reelxmin))
382	self.FXmaxX.SetValue(str(Reelxmax))
383
384
385	if __name__ == "__main__":
386	app = wx.App()
387	dialog=LinearFit(None, -1, 'Fitting')
388	dialog.ShowModal()
389	app.MainLoop()
390
391

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source: sasview/guitools/fitDialog.py @ edce46e

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