PlotPanel.py @ 7a03e65

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 7a03e65 was 7a03e65, checked in by Gervaise Alina <gervyh@…>, 17 years ago
plotpanel modified plottables and fitdialog
Property mode set to `100644`
File size: 21.2 KB

Line
1	import wx.lib.newevent
2	import matplotlib
3	matplotlib.interactive(False)
4	#Use the WxAgg back end. The Wx one takes too long to render
5	matplotlib.use('WXAgg')
6	from matplotlib.backends.backend_wxagg import FigureCanvasWxAgg
7	from matplotlib.figure import Figure
8	import os
9	import fittings
10	from canvas import FigureCanvas
11	#TODO: make the plottables interactive
12
13	from plottables import Graph
14	#(FuncFitEvent, EVT_FUNC_FIT) = wx.lib.newevent.NewEvent()
15	import math,pylab
16	def show_tree(obj,d=0):
17	"""Handy function for displaying a tree of graph objects"""
18	print "%s%s" % ("-"*d,obj.__class__.__name__)
19	if 'get_children' in dir(obj):
20	for a in obj.get_children(): show_tree(a,d+1)
21
22
23
24	class PlotPanel(wx.Panel):
25	"""
26	The PlotPanel has a Figure and a Canvas. OnSize events simply set a
27	flag, and the actually redrawing of the
28	figure is triggered by an Idle event.
29	"""
30	def __init__(self, parent, id = -1, color = None,\
31	dpi = None, **kwargs):
32	wx.Panel.__init__(self, parent, id = id, **kwargs)
33	self.parent = parent
34	self.figure = Figure(None, dpi)
35	#self.figure = pylab.Figure(None, dpi)
36	#self.canvas = NoRepaintCanvas(self, -1, self.figure)
37	self.canvas = FigureCanvas(self, -1, self.figure)
38	self.SetColor(color)
39	#self.Bind(wx.EVT_IDLE, self._onIdle)
40	#self.Bind(wx.EVT_SIZE, self._onSize)
41	self._resizeflag = True
42	self._SetSize()
43	self.subplot = self.figure.add_subplot(111)
44	self.figure.subplots_adjust(left=.2, bottom=.2)
45	self.yscale = 'linear'
46	self.xscale = 'linear'
47	sizer = wx.BoxSizer(wx.VERTICAL)
48	sizer.Add(self.canvas,1,wx.EXPAND)
49	self.SetSizer(sizer)
50
51	# Graph object to manage the plottables
52	self.graph = Graph()
53	#self.Bind(EVT_FUNC_FIT, self.onFitRange)
54	self.Bind(wx.EVT_CONTEXT_MENU, self.onContextMenu)
55	#self.Bind(EVT_PROPERTY, self._onEVT_FUNC_PROPERTY)
56	# Define some constants
57	self.colorlist = ['b','g','r','c','m','y']
58	self.symbollist = ['o','x','^','v','<','>','+','s','d','D','h','H','p']
59	#User scale
60	self.xscales ="x"
61	self.yscales ="Log(y)"
62	# keep track if the previous transformation of x and y in Property dialog
63	self.prevXtrans =" "
64	self.prevYtrans =" "
65
66	def returnTrans(self):
67	return self.xscales,self.yscales
68
69	def setTrans(self,xtrans,ytrans):
70	"""
71	@param xtrans: set x transformation on Property dialog
72	@param ytrans: set y transformation on Property dialog
73	"""
74	self.prevXtrans =xtrans
75	self.prevYtrans =ytrans
76
77	def onFitting(self, event):
78	"""
79	when clicking on linear Fit on context menu , display Fitting Dialog
80	"""
81	list =[]
82	list = self.graph.returnPlottable()
83	from fitDialog import LinearFit
84
85	if len(list.keys())>0:
86	first_item = list.keys()[0]
87	#print first_item, list[first_item].__class__.__name__
88	dlg = LinearFit( None, first_item, self.onFitDisplay,self.returnTrans, -1, 'Fitting')
89	dlg.ShowModal()
90
91	def _onProperties(self, event):
92	"""
93	when clicking on Properties on context menu ,The Property dialog is displayed
94	The user selects a transformation for x or y value and a new plot is displayed
95	"""
96	from PropertyDialog import Properties
97	dial = Properties(self, -1, 'Properties')
98	dial.setValues( self.prevXtrans, self.prevYtrans )
99	if dial.ShowModal() == wx.ID_OK:
100	self.xscales, self.yscales = dial.getValues()
101	self._onEVT_FUNC_PROPERTY()
102	dial.Destroy()
103
104	def toX(self,x,y=None):
105	"""
106	This function is used to load value on Plottable.View
107	@param x: Float value
108	@return x,
109	"""
110	return x
111
112	def toX2(self,x,y=None):
113	"""
114	This function is used to load value on Plottable.View
115	Calculate x^(2)
116	@param x: float value
117	"""
118	return x*x
119
120	def fromX2(self,x,y=None):
121	"""
122	This function is used to load value on Plottable.View
123	Calculate square root of x
124	@param x: float value
125	"""
126	if not x >=0 :
127	raise ValueError, "square root of a negative value "
128	else:
129	return math.sqrt(x)
130	def toLogX(self,x,y=None):
131	"""
132	This function is used to load value on Plottable.View
133	calculate log x
134	@param x: float value
135	"""
136	if not x > 0:
137	raise ValueError, "Log(X)of a negative value "
138	else:
139	return math.log(x)
140
141	def toOneOverX(self,x,y=None):
142	if x !=0:
143	return 1/x
144	else:
145	raise ValueError,"cannot divide by zero"
146	def toOneOverSqrtX(self,x=None,y=None):
147	if y!=None:
148	if y > 0:
149	return 1/math.sqrt(y)
150	else:
151	raise ValueError,"cannot be computed"
152	if x!= None:
153	if x > 0:
154	return 1/math.sqrt(x)
155	else:
156	raise ValueError,"cannot be computed"
157
158	def toLogYX2(self,x,y):
159	if y(x*2) >0:
160	return math.log(y(x*2))
161	else:
162	raise ValueError,"cannot be computed"
163
164
165	def toYX2(self,x,y):
166	return (x*2)y
167
168
169	def toXY(self,x,y):
170	return x*y
171
172
173	def toLogXY(self,x,y):
174	"""
175	This function is used to load value on Plottable.View
176	calculate log x
177	@param x: float value
178	"""
179	if not x*y > 0:
180	raise ValueError, "Log(X*Y)of a negative value "
181	else:
182	return math.log(x*y)
183
184	def fromLogXY(self,x):
185	"""
186	This function is used to load value on Plottable.View
187	Calculate e^(x)
188	@param x: float value
189	"""
190	return math.exp(x*y)
191
192	def set_yscale(self, scale='linear'):
193	"""
194	Set the scale on Y-axis
195	@param scale: the scale of y-axis
196	"""
197	self.subplot.set_yscale(scale)
198	self.yscale = scale
199
200	def get_yscale(self):
201	"""
202	@return: Y-axis scale
203	"""
204	return self.yscale
205
206	def set_xscale(self, scale='linear'):
207	"""
208	Set the scale on x-axis
209	@param scale: the scale of x-axis
210	"""
211	self.subplot.set_xscale(scale)
212	self.xscale = scale
213
214	def get_xscale(self):
215	"""
216	@return: x-axis scale
217	"""
218	return self.xscale
219
220	def SetColor(self, rgbtuple):
221	"""Set figure and canvas colours to be the same"""
222	if not rgbtuple:
223	rgbtuple = wx.SystemSettings.GetColour(wx.SYS_COLOUR_BTNFACE).Get()
224	col = [c/255.0 for c in rgbtuple]
225	self.figure.set_facecolor(col)
226	self.figure.set_edgecolor(col)
227	self.canvas.SetBackgroundColour(wx.Colour(*rgbtuple))
228
229	def _onSize(self, event):
230	self._resizeflag = True
231
232	def _onIdle(self, evt):
233	if self._resizeflag:
234	self._resizeflag = False
235	self._SetSize()
236	self.draw()
237
238	def _SetSize(self, pixels = None):
239	"""
240	This method can be called to force the Plot to be a desired size, which defaults to
241	the ClientSize of the panel
242	"""
243	if not pixels:
244	pixels = self.GetClientSize()
245	self.canvas.SetSize(pixels)
246	self.figure.set_size_inches(pixels[0]/self.figure.get_dpi(),
247	pixels[1]/self.figure.get_dpi())
248
249	def draw(self):
250	"""Where the actual drawing happens"""
251	self.figure.canvas.draw_idle()
252
253
254
255	def onSaveImage(self, evt):
256	#figure.savefig
257	#print "Save image not implemented"
258	path = None
259	dlg = wx.FileDialog(self, "Choose a file", os.getcwd(), "", "*.png", wx.SAVE)
260	if dlg.ShowModal() == wx.ID_OK:
261	path = dlg.GetPath()
262	mypath = os.path.basename(path)
263	print path
264	dlg.Destroy()
265	if not path == None:
266	self.subplot.figure.savefig(path,dpi=300, facecolor='w', edgecolor='w',
267	orentation='portrait', papertype=None, format='png')
268
269	def onContextMenu(self, event):
270	"""
271	Default context menu for a plot panel
272	"""
273	# Slicer plot popup menu
274	slicerpop = wx.Menu()
275	slicerpop.Append(313,'&Save image', 'Save image as PNG')
276	wx.EVT_MENU(self, 313, self.onSaveImage)
277	slicerpop.Append(316, '&Load 1D data file')
278
279	wx.EVT_MENU(self, 314, self.onSave1DData)
280	wx.EVT_MENU(self, 316, self._onLoad1DData)
281	slicerpop.AppendSeparator()
282	slicerpop.Append(315, '&Properties')
283
284	slicerpop.AppendSeparator()
285	slicerpop.Append(317, '&Linear Fit')
286
287	wx.EVT_MENU(self, 314, self.onSave1DData)
288	wx.EVT_MENU(self, 316, self._onLoad1DData)
289	wx.EVT_MENU(self, 315, self._onProperties)
290	wx.EVT_MENU(self, 317, self.onFitting)
291
292	pos = event.GetPosition()
293	pos = self.ScreenToClient(pos)
294	self.PopupMenu(slicerpop, pos)
295
296	## The following is plottable functionality
297
298
299	def properties(self,prop):
300	"""Set some properties of the graph.
301
302	The set of properties is not yet determined.
303	"""
304	# The particulars of how they are stored and manipulated (e.g., do
305	# we want an inventory internally) is not settled. I've used a
306	# property dictionary for now.
307	#
308	# How these properties interact with a user defined style file is
309	# even less clear.
310
311	# Properties defined by plot
312	self.subplot.set_xlabel(r"$%s$" % prop["xlabel"])
313	self.subplot.set_ylabel(r"$%s$" % prop["ylabel"])
314	self.subplot.set_title(prop["title"])
315
316	# Properties defined by user
317	#self.axes.grid(True)
318
319	def clear(self):
320	"""Reset the plot"""
321
322	# TODO: Redraw is brutal. Render to a backing store and swap in
323	# TODO: rather than redrawing on the fly.
324	self.subplot.clear()
325	self.subplot.hold(True)
326
327
328	def render(self):
329	"""Commit the plot after all objects are drawn"""
330	# TODO: this is when the backing store should be swapped in.
331	from matplotlib.font_manager import FontProperties
332	self.subplot.legend(prop=FontProperties(size=10))
333	#self.subplot.legend()
334	pass
335
336	def xaxis(self,label,units):
337	"""xaxis label and units.
338
339	Axis labels know about units.
340
341	We need to do this so that we can detect when axes are not
342	commesurate. Currently this is ignored other than for formatting
343	purposes.
344	"""
345	if units != "": label = label + " (" + units + ")"
346	self.subplot.set_xlabel(label)
347	pass
348
349	def yaxis(self,label,units):
350	"""yaxis label and units."""
351	if units != "": label = label + " (" + units + ")"
352	self.subplot.set_ylabel(label)
353	pass
354
355	def _connect_to_xlim(self,callback):
356	"""Bind the xlim change notification to the callback"""
357	def process_xlim(axes):
358	lo,hi = subplot.get_xlim()
359	callback(lo,hi)
360	self.subplot.callbacks.connect('xlim_changed',process_xlim)
361
362	#def connect(self,trigger,callback):
363	# print "PlotPanel.connect???"
364	# if trigger == 'xlim': self._connect_to_xlim(callback)
365
366	def points(self,x,y,dx=None,dy=None,color=0,symbol=0,label=None):
367	"""Draw markers with error bars"""
368	self.subplot.set_yscale('linear')
369	self.subplot.set_xscale('linear')
370	# Convert tuple (lo,hi) to array [(x-lo),(hi-x)]
371	if dx != None and type(dx) == type(()):
372	dx = nx.vstack((x-dx[0],dx[1]-x)).transpose()
373	if dy != None and type(dy) == type(()):
374	dy = nx.vstack((y-dy[0],dy[1]-y)).transpose()
375
376	if dx==None and dy==None:
377	h = self.subplot.plot(x,y,color=self._color(color),
378	marker=self._symbol(symbol),linestyle='',label=label)
379	else:
380	self.subplot.errorbar(x, y, yerr=dy, xerr=None,
381	ecolor=self._color(color), capsize=2,linestyle='', barsabove=False,
382	marker=self._symbol(symbol),
383	lolims=False, uplims=False,
384	xlolims=False, xuplims=False,label=label)
385
386	self.subplot.set_yscale(self.yscale)
387	self.subplot.set_xscale(self.xscale)
388
389	def curve(self,x,y,dy=None,color=0,symbol=0,label=None):
390	"""Draw a line on a graph, possibly with confidence intervals."""
391	c = self._color(color)
392	self.subplot.set_yscale('linear')
393	self.subplot.set_xscale('linear')
394
395	hlist = self.subplot.plot(x,y,color=c,marker='',linestyle='-',label=label)
396
397	self.subplot.set_yscale(self.yscale)
398	self.subplot.set_xscale(self.xscale)
399
400	def _color(self,c):
401	"""Return a particular colour"""
402	return self.colorlist[c%len(self.colorlist)]
403
404	def _symbol(self,s):
405	"""Return a particular symbol"""
406	return self.symbollist[s%len(self.symbollist)]
407
408	def _onEVT_FUNC_PROPERTY(self):
409	"""
410	Receive the x and y transformation from myDialog,Transforms x and y in View
411	and set the scale
412	"""
413	list =[]
414	list = self.graph.returnPlottable()
415	for item in list:
416	if ( self.xscales=="x" ):
417	item.transform_x( self.toX, self.errToX )
418	self.set_xscale("linear")
419	name, units = item.get_xaxis()
420	self.graph.xaxis("%s" % name, "%s^{-1}" % units)
421
422	if ( self.xscales=="x^(2)" ):
423	item.transform_x( self.toX2, self.errToX2 )
424	self.set_xscale('linear')
425	name, units = item.get_xaxis()
426	self.graph.xaxis("%s^{2}" % name, "%s^{-2}" % units)
427
428	if (self.xscales=="Log(x)" ):
429	item.transform_x( self.toX, self.errToLogX )
430	self.set_xscale("log")
431	name, units = item.get_xaxis()
432	self.graph.xaxis("%s" % name, "%s^{-1}" % units)
433
434	if ( self.yscales=="y" ):
435	item.transform_y( self.toX, self.errToX )
436	self.set_yscale("linear")
437	name, units = item.get_yaxis()
438	self.graph.yaxis("%s" % name, "%s^{-1}" % units)
439
440	if ( self.yscales=="Log(y)" ):
441	item.transform_y( self.toX, self.errToLogX)
442	self.set_yscale("log")
443	name, units = item.get_yaxis()
444	self.graph.yaxis("%s" % name, "%s^{-1}" % units)
445
446	if ( self.yscales=="y^(2)" ):
447	item.transform_y( self.toX2, self.errToX2 )
448	self.set_yscale("linear")
449	name, units = item.get_yaxis()
450	self.graph.yaxis("%s^2" % name, "%s^{-2}" % units)
451	if ( self.yscales =="1/y"):
452	item.transform_y( self.toOneOverX ,self.errOneOverX )
453	self.set_yscale("linear")
454	name, units = item.get_yaxis()
455	self.graph.yaxis("%s" % name, "%s" % units)
456	if ( self.yscales =="1/sqrt(y)" ):
457	item.transform_y( self.toOneOverSqrtX ,self.errOneOverSqrtX )
458	self.set_yscale("linear")
459	name, units = item.get_yaxis()
460	self.graph.yaxis("%s" %name, "%s" % units)
461
462	if ( self.yscales =="Log(y*x)"):
463	item.transform_y( self.toLogXY ,self.errToLogXY )
464	self.set_yscale("linear")
465	yname, yunits = item.get_yaxis()
466	xname, xunits = item.get_xaxis()
467	self.graph.yaxis("%s%s" % (yname,xname), "%s^{-1}%s^{-1}" % (yunits,xunits))
468	if ( self.yscales =="Log(y*x^(2)"):
469	item.transform_y( self.toYX2 ,self.errToYX2 )
470	self.set_yscale("linear")
471	yname, yunits = item.get_yaxis()
472	xname, xunits = item.get_xaxis()
473	self.graph.yaxis("%s%s^{2}" % (yname,xname), "%s^{-1}%s^{-2}" % (yunits,xunits))
474
475	self.prevXtrans = self.xscales
476	self.prevYtrans = self.yscales
477
478	self.graph.render(self)
479	self.subplot.figure.canvas.draw_idle()
480
481	def errToX(self,x,y=None,dx=None,dy=None):
482	"""
483	calculate error of x**2
484	@param x: float value
485	@param dx: float value
486	"""
487	return dx
488
489
490	def errToX2(self,x,y=None,dx=None,dy=None):
491	"""
492	calculate error of x**2
493	@param x: float value
494	@param dx: float value
495	"""
496	if dx != None:
497	err = 2xdx
498	if math.fabs(err) >= math.fabs(x):
499	err = 0.9*x
500	return math.fabs(err)
501	else:
502	return 0.0
503	def errFromX2(self,x,y=None,dx=None,dy=None):
504	"""
505	calculate error of sqrt(x)
506	@param x: float value
507	@param dx: float value
508	"""
509	if (x > 0):
510	if(dx != None):
511	err = dx/(2*math.sqrt(x))
512	else:
513	err = 0
514	if math.fabs(err) >= math.fabs(x):
515	err = 0.9*x
516	else:
517	err = 0.9*x
518
519	return math.fabs(err)
520
521	def errToLogX(self,x,y=None,dx=None,dy=None):
522	"""
523	calculate error of Log(x)
524	@param x: float value
525	@param dx: float value
526	"""
527	if math.fabs(dx) >= math.fabs(x):
528	return 0.9*x
529	return dx
530
531	def errToXY(self, x, y, dx=None, dy=None):
532	if dx==None:
533	dx=0
534	if dy==None:
535	dy=0
536	err =math.sqrt((ydx)2 +(xdy)**2)
537	if err >= math.fabs(x):
538	err =0.9*x
539	return err
540
541	def errToYX2(self, x, y, dx=None, dy=None):
542	if dx==None:
543	dx=0
544	if dy==None:
545	dy=0
546	err =math.sqrt((2xydx)2 +((x2)dy)**2)
547	if err >= math.fabs(x):
548	err =0.9*x
549	return err
550
551	def errToLogXY(self,x,y,dx=None, dy=None):
552	"""
553	calculate error of Log(xy)
554	"""
555	if (x!=0) and (y!=0):
556	if dx == None:
557	dx = 0
558	if dy == None:
559	dy = 0
560	err = (dx/x)2 + (dy/y)2
561	if math.sqrt(math.fabs(err)) >= math.fabs(x):
562	err= 0.9*x
563	else:
564	raise ValueError, "cannot compute this error"
565
566	return math.sqrt(math.fabs(err))
567
568	def errToLogYX2(self,x,y,dx=None, dy=None):
569	"""
570	calculate error of Log(yx**2)
571	"""
572	if (x > 0) and (y > 0):
573	if (dx == None):
574	dx = 0
575	if (dy == None):
576	dy = 0
577	err = 4(dx2)/(x2) + (dy2)/(y*2)
578	if math.fabs(err) >= math.fabs(x):
579	err =0.9*x
580	else:
581	raise ValueError, "cannot compute this error"
582
583	return math.sqrt(math.fabs(err))
584
585	def errOneOverX(self,x,y=None,dx=None, dy=None):
586	"""
587	calculate error on 1/x
588	"""
589	if (x != 0):
590	if dx ==None:
591	dx= 0
592	err = -(dx)2/x2
593	else:
594	raise ValueError,"Cannot compute this error"
595
596	if math.fabs(err)>= math.fabs(x):
597	err= 0.9*x
598	return math.fabs(err)
599
600	def errOneOverSqrtX(self,x,y=None, dx=None,dy=None):
601	"""
602	Calculate error on 1/sqrt(x)
603	"""
604	if (x >0):
605	if dx==None:
606	dx =0
607	err= -1/2math.pow(x, -3/2) dx
608	if math.fabs(err)>= math.fabs(x):
609	err=0.9*x
610	else:
611	raise ValueError, "Cannot compute this error"
612
613	return math.fabs(err)
614
615
616	def onFitDisplay(self, plottable):
617	"""
618	Add a new plottable into the graph .In this case this plottable will be used
619	to fit some data
620	@param plottable: the plottable to plot
621	"""
622	plottable.reset_view()
623	self.graph.add(plottable)
624	self.graph.render(self)
625	self.subplot.figure.canvas.draw_idle()
626	self.graph.delete(plottable)
627
628
629
630
631	class NoRepaintCanvas(FigureCanvasWxAgg):
632	"""We subclass FigureCanvasWxAgg, overriding the _onPaint method, so that
633	the draw method is only called for the first two paint events. After that,
634	the canvas will only be redrawn when it is resized.
635	"""
636	def __init__(self, args, *kwargs):
637	FigureCanvasWxAgg.__init__(self, args, *kwargs)
638	self._drawn = 0
639
640	def _onPaint(self, evt):
641	"""
642	Called when wxPaintEvt is generated
643	"""
644	if not self._isRealized:
645	self.realize()
646	if self._drawn < 2:
647	self.draw(repaint = False)
648	self._drawn += 1
649	self.gui_repaint(drawDC=wx.PaintDC(self))
650

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SasView

source: sasview/guitools/PlotPanel.py @ 7a03e65

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