fitDialog.py @ 2e014bf

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 2e014bf was 90640f2, checked in by Gervaise Alina <gervyh@…>, 16 years ago
ore bugs fixed
Property mode set to `100644`
File size: 14.5 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, id, title):
14	def __init__(self, parent, plottable, push_data,transform, id, title):
15	wx.Dialog.__init__(self, parent, id, title, size=(450, 400))
16	"""
17	for the fit window
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	self.plottable = plottable
25	# Receive transformations of x and y
26	self.xtrans,self.ytrans= self.transform()
27	#Dialog interface
28	panel = wx.Panel(self, -1, style=wx.SIMPLE_BORDER)
29	vbox = wx.BoxSizer(wx.VERTICAL)
30	sizer = wx.GridBagSizer(5,5)
31
32	vbox.Add(panel, 1, wx.EXPAND \| wx.ALL)
33
34	self.tcA = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
35	self.tcErrA = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
36	self.tcB = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
37	self.tcErrB = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
38	self.tcChi = wx.TextCtrl(panel, -1,size=(120,20),style=wx.SIMPLE_BORDER)
39	self.FXmin = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
40	self.FXmax = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
41	self.FXminX = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
42	self.FXmaxX = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
43	self.PXmin = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
44	self.PXmax = wx.TextCtrl(panel,-1,size=(120,20),style=wx.SIMPLE_BORDER)
45	self.btFit =wx.Button(panel,-1,'Fit',size=(120, 30))
46	self.btClose =wx.Button(panel, wx.ID_CANCEL,'Close',size=(90, 30) )
47	self.static_line_1 = wx.StaticLine(panel, -1)
48
49	ix = 0
50	iy = 1
51	sizer.Add(wx.StaticText(panel, -1, 'y = Ax +B'),(iy, ix),(1,1),\
52	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
53	iy+=1
54	sizer.Add(wx.StaticText(panel, -1, 'Param A'),(iy, ix),\
55	(1,1), wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
56	ix += 1
57	sizer.Add(self.tcA,(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
58	ix += 1
59	sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
60	ix += 1
61	sizer.Add(self.tcErrA, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
62	iy += 1
63	ix = 0
64	sizer.Add(wx.StaticText(panel, -1, 'Param B'),(iy, ix),(1,1),\
65	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
66	ix += 1
67	sizer.Add(self.tcB, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
68	ix += 1
69	sizer.Add(wx.StaticText(panel, -1, '+/-'),(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
70	ix += 1
71	sizer.Add(self.tcErrB, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
72	iy += 1
73	ix = 0
74	sizer.Add(wx.StaticText(panel, -1, 'Chi ^{2}'),(iy, ix),(1,1),\
75	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
76	ix += 1
77	sizer.Add(self.tcChi, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
78	iy += 1
79	ix = 1
80	sizer.Add(wx.StaticText(panel, -1, 'Xmin'),(iy, ix),(1,1),\
81	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
82	ix += 2
83	sizer.Add(wx.StaticText(panel, -1, 'Xmax'),(iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
84	iy += 1
85	ix = 0
86	sizer.Add(wx.StaticText(panel, -1, 'Plotted Range'),(iy, ix),(1,1),\
87	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
88	ix +=1
89	sizer.Add(self.PXmin, (iy, ix),(1,1),\
90	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
91	ix += 2
92	sizer.Add(self.PXmax, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
93	iy += 1
94	ix = 1
95	sizer.Add(wx.StaticText(panel, -1,"x transofrmation is: "+self.xtrans ),(iy, ix),(1,1),\
96	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
97	iy += 1
98	ix = 0
99	sizer.Add(wx.StaticText(panel, -1, 'Fit Range'),(iy, ix),(1,1),\
100	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
101	ix += 1
102	sizer.Add(self.FXmin, (iy, ix),(1,1),\
103	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
104	ix += 2
105	sizer.Add(self.FXmax, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
106
107	iy += 1
108	ix = 0
109	sizer.Add(wx.StaticText(panel, -1, 'Fit Range of x'),(iy, ix),(1,1),\
110	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 15)
111	ix += 1
112	sizer.Add(self.FXminX, (iy, ix),(1,1),\
113	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
114	ix += 2
115	sizer.Add(self.FXmaxX, (iy, ix),(1,1), wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
116	iy += 1
117	ix = 1
118
119	sizer.Add(self.btFit, (iy, ix),(1,1), wx.LEFT\|wx.ADJUST_MINSIZE, 0)
120	self.btFit.Bind(wx.EVT_BUTTON, self._onFit)
121	ix += 2
122	sizer.Add(self.btClose, (iy, ix),(1,1),\
123	wx.LEFT\|wx.EXPAND\|wx.ADJUST_MINSIZE, 0)
124
125	panel.SetSizer(sizer)
126	self.SetSizer(vbox)
127	self.Centre()
128
129	# Receives the type of model for the fitting
130	from LineModel import LineModel
131	self.model = LineModel()
132
133	#Display the fittings values
134	self.default_A = self.model.getParam('A')
135	self.default_B = self.model.getParam('B')
136	self.cstA = fittings.Parameter(self.model, 'A', self.default_A)
137	self.cstB = fittings.Parameter(self.model, 'B', self.default_B)
138
139	# Set default value of parameter in fit dialog
140	self.tcA.SetLabel(str(self.default_A))
141	self.tcB.SetLabel(str(self.default_B))
142	self.tcErrA.SetLabel(str(0.0))
143	self.tcErrB.SetLabel(str(0.0))
144	self.tcChi.SetLabel(str(0.0))
145
146	if self.plottable.x !=[]:
147	self.mini =min(self.plottable.x)
148	self.maxi =max(self.plottable.x)
149
150	self.FXmin.SetLabel(str(self.mini))
151	self.FXmax.SetLabel(str(self.maxi))
152	self.FXmin.Disable()
153	self.FXmax.Disable()
154
155	self.PXmin.SetValue(str(self.mini))
156	self.PXmax.SetValue(str(self.maxi))
157	self.PXmin.Disable()
158	self.PXmax.Disable()
159
160	self.FXminX.SetLabel(str(self.mini))
161	self.FXmaxX.SetLabel(str(self.maxi))
162
163
164	def _onFit(self ,event):
165	"""
166	Performs the fit. Receive an event when clicking on the button Fit.Computes chisqr ,
167	A and B parameters of the best linear fit y=Ax +B
168	Push a plottable to
169	"""
170	tempx=[]
171	tempy=[]
172	tempdy = []
173
174	#store the values of View in x,y, dx,dy
175	x,y,dx,dy=self.plottable.returnValuesOfView()
176
177	# Check if View contains a x array .we online fit when x exits
178	# makes transformation for y as a line to fit
179	if x != []:
180
181
182	if(self.checkFitValues(self.FXminX) == True):
183	#Check if the field of Fit Dialog contain values and use the x max and min of the user
184	xmin,xmax = self._checkVal(self.FXminX.GetValue(),self.FXmaxX.GetValue())
185
186	xminView=self.floatTransform(xmin)
187	xmaxView=self.floatTransform(xmax)
188	self.FXmin.SetValue(str(xminView))
189	self.FXmax.SetValue(str(xmaxView))
190	self.FXmin.Disable()
191	self.FXmax.Disable()
192	# Store the transformed values of view x, y,dy in variables before the fit
193	if self.ytrans.lower() == "log10(y)":
194	if (self.xtrans.lower() == "log10(x)"):
195	for i in range(len(x)):
196	if x[i]>= math.log10(xmin):
197	tempy.append(math.log10(y[i]))
198	tempdy.append(transform.errToLogX(y[i],0,dy[i],0))
199	else:
200	for i in range(len(y)):
201	tempy.append(math.log10(y[i]))
202	tempdy.append(transform.errToLogX(y[i],0,dy[i],0))
203	else:
204	tempy = y
205	tempdy = dy
206
207	if (self.xtrans.lower() == "log10(x)"):
208	for x_i in x:
209	if x_i >= math.log10(xmin):
210	tempx.append(math.log10(x_i))
211	else:
212	tempx = x
213
214	#for y_i in y:
215	# dy = math.sqrt(math.fabs(y_i))
216	# if dy >= y_i:
217	# dy = 0.9*y_i
218	# tempdy.append(dy)
219
220	#Find the fitting parameters
221
222	if (self.xtrans.lower() == "log10(x)"):
223	chisqr, out, cov = fittings.sansfit(self.model, [self.cstA, self.cstB],
224	tempx, tempy,tempdy,math.log10(xmin),math.log10(xmax))
225	else:
226	chisqr, out, cov = fittings.sansfit(self.model,
227	[self.cstA, self.cstB],tempx, tempy,tempdy,xminView,xmaxView)
228	print "this out",out
229	#Check that cov and out are iterable before displaying them
230	if cov ==None:
231	errA =0.0
232	errB =0.0
233	else:
234	errA= math.sqrt(cov[0][0])
235	errB= math.sqrt(cov[1][1])
236	if out==None:
237	cstA=0.0
238	cstB=0.0
239	else:
240	cstA=out[0]
241	cstB=out[1]
242	# Reset model with the right values of A and B
243	self.model.setParam('A', float(cstA))
244	self.model.setParam('B', float(cstB))
245
246	tempx = []
247	tempy = []
248	y_model = 0.0
249	# load tempy with the minimum transformation
250
251	if self.xtrans == "log10(x)":
252	y_model = self.model.run(math.log10(xmin))
253	tempx.append(xmin)
254	else:
255	y_model = self.model.run(xminView)
256	tempx.append(xminView)
257
258	if self.ytrans == "log10(y)":
259	tempy.append(math.pow(10,y_model))
260	print "tempy",tempy
261	else:
262	tempy.append(y_model)
263
264	# load tempy with the maximum transformation
265	if self.xtrans == "log10(x)":
266	y_model = self.model.run(math.log10(xmax))
267	tempx.append(xmax)
268	else:
269	y_model = self.model.run(xmaxView)
270	tempx.append(xmaxView)
271
272	if self.ytrans == "log10(y)":
273	tempy.append(math.pow(10,y_model))
274	else:
275	tempy.append(y_model)
276
277	self.push_data(tempx,tempy,xminView,xmaxView,xmin,xmax)
278
279	# Display the fitting value on the Fit Dialog
280	self._onsetValues(cstA, cstB, errA,errB,chisqr)
281
282	def _onsetValues(self,cstA,cstB,errA,errB,Chi):
283	"""
284	Display the value on fit Dialog
285	"""
286	self.tcA.SetValue(str(cstA))
287	self.tcB.SetValue(str(cstB))
288	self.tcErrA.SetValue(str(errA))
289	self.tcErrB.SetValue(str(errB))
290	self.tcChi.SetValue(str(Chi))
291
292	def _returnPlottable(self):
293	return self.file_data1
294
295	def _checkVal(self,usermin, usermax):
296	"""
297	Ensure that fields parameter contains a min and a max value
298	within x min and x max range
299	"""
300	if float(usermin) < float(usermax):
301	if float(usermin) >= float(self.mini) and float(usermin) < float(self.maxi):
302	self.FXminX.SetValue(str(usermin))
303	else:
304	self.FXminX.SetValue(str(self.mini))
305
306	if float(usermax) > float(self.mini) and float(usermax) <= float(self.maxi):
307	self.FXmaxX.SetLabel(str(usermax))
308	else:
309	self.FXmaxX.SetLabel(str(self.maxi))
310
311	mini =float(self.FXminX.GetValue())
312	maxi =float(self.FXmaxX.GetValue())
313
314	return mini, maxi
315	def floatTransform(self,x):
316	"""
317	transform a float.It is use to determine the x.View min and x.View max for values
318	not in x
319	"""
320	if ( self.xtrans=="x" ):
321	return transform.toX(x)
322
323	if ( self.xtrans=="x^(2)" ):
324	return transform.toX2(x)
325
326	if (self.xtrans=="log10(x)" ):
327	if x >0:
328	return x
329	else:
330	raise ValueError,"cannot compute log of a negative number"
331
332	def checkFitValues(self,item):
333	"""
334	Check the validity of input values
335	"""
336	flag = True
337	value = item.GetValue()
338	# Check for possible values entered
339	if (self.xtrans=="log10(x)"):
340	if (float(value) > 0):
341	item.SetBackgroundColour(wx.WHITE)
342	item.Refresh()
343	else:
344	flag = False
345	item.SetBackgroundColour("pink")
346	item.Refresh()
347
348	return flag
349
350	def setFitRange(self,xmin,xmax,Reelxmin,Reelxmax):
351	if (self.xtrans=="log10(x)"):
352	self.FXmin.SetValue(str(math.log10(xmin)))
353	self.FXmax.SetValue(str(math.log10(xmax)))
354	else:
355	self.FXmin.SetValue(str(xmin))
356	self.FXmax.SetValue(str(xmax))
357	self.FXminX.SetValue(str(Reelxmin))
358	self.FXmaxX.SetValue(str(Reelxmax))
359
360
361	if __name__ == "__main__":
362	app = wx.App()
363	dialog=LinearFit(None, -1, 'Fitting')
364	dialog.ShowModal()
365	app.MainLoop()
366
367

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source: sasview/guitools/fitDialog.py @ 2e014bf

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