Plotter2D.py @ 6b43c58

Last change on this file since 6b43c58 was f4a1433, checked in by Piotr Rozyczko <rozyczko@…>, 7 years ago
Merge branch 'master' into ESS_GUI
Property mode set to `100644`
File size: 18.1 KB

Line
1	import copy
2	import numpy
3	import pylab
4	import functools
5
6	from PyQt4 import QtGui
7	from PyQt4 import QtCore
8
9	DEFAULT_CMAP = pylab.cm.jet
10	from mpl_toolkits.mplot3d import Axes3D
11
12	from sas.sascalc.dataloader.manipulations import CircularAverage
13
14	from sas.qtgui.Plotting.PlotterData import Data1D
15	from sas.qtgui.Plotting.PlotterData import Data2D
16
17	import sas.qtgui.Plotting.PlotUtilities as PlotUtilities
18	import sas.qtgui.Utilities.GuiUtils as GuiUtils
19	from sas.qtgui.Plotting.PlotterBase import PlotterBase
20	from sas.qtgui.Plotting.ColorMap import ColorMap
21	from sas.qtgui.Plotting.BoxSum import BoxSum
22	from sas.qtgui.Plotting.SlicerParameters import SlicerParameters
23	from sas.qtgui.Plotting.Binder import BindArtist
24
25	# TODO: move to sas.qtgui namespace
26	from sas.qtgui.Plotting.Slicers.BoxSlicer import BoxInteractorX
27	from sas.qtgui.Plotting.Slicers.BoxSlicer import BoxInteractorY
28	from sas.qtgui.Plotting.Slicers.AnnulusSlicer import AnnulusInteractor
29	from sas.qtgui.Plotting.Slicers.SectorSlicer import SectorInteractor
30	from sas.qtgui.Plotting.Slicers.BoxSum import BoxSumCalculator
31
32	# Minimum value of Z for which we will present data.
33	MIN_Z = -32
34
35	class Plotter2DWidget(PlotterBase):
36	"""
37	2D Plot widget for use with a QDialog
38	"""
39	def __init__(self, parent=None, manager=None, quickplot=False, dimension=2):
40	self.dimension = dimension
41	super(Plotter2DWidget, self).__init__(parent, manager=manager, quickplot=quickplot)
42
43	self.cmap = DEFAULT_CMAP.name
44	# Default scale
45	self.scale = 'log_{10}'
46	# to set the order of lines drawn first.
47	self.slicer_z = 5
48	# Reference to the current slicer
49	self.slicer = None
50	self.slicer_widget = None
51	# Create Artist and bind it
52	self.connect = BindArtist(self.figure)
53	self.vmin = None
54	self.vmax = None
55
56	self.manager = manager
57
58	@property
59	def data(self):
60	return self._data
61
62	@data.setter
63	def data(self, data=None):
64	""" data setter """
65	self._data = data
66	self.qx_data = data.qx_data
67	self.qy_data = data.qy_data
68	self.xmin = data.xmin
69	self.xmax = data.xmax
70	self.ymin = data.ymin
71	self.ymax = data.ymax
72	self.zmin = data.zmin
73	self.zmax = data.zmax
74	self.label = data.name
75	self.xLabel = "%s(%s)"%(data._xaxis, data._xunit)
76	self.yLabel = "%s(%s)"%(data._yaxis, data._yunit)
77	self.title(title=data.title)
78
79	@property
80	def item(self):
81	''' getter for this plot's QStandardItem '''
82	return self._item
83
84	@item.setter
85	def item(self, item=None):
86	''' setter for this plot's QStandardItem '''
87	self._item = item
88
89	def plot(self, data=None, marker=None, show_colorbar=True):
90	"""
91	Plot 2D self._data
92	marker - unused
93	"""
94	# Assing data
95	if isinstance(data, Data2D):
96	self.data = data
97
98	assert self._data
99
100	# Toggle the scale
101	zmin_2D_temp, zmax_2D_temp = self.calculateDepth()
102
103	# Prepare and show the plot
104	self.showPlot(data=self.data.data,
105	qx_data=self.qx_data,
106	qy_data=self.qy_data,
107	xmin=self.xmin,
108	xmax=self.xmax,
109	ymin=self.ymin, ymax=self.ymax,
110	cmap=self.cmap, zmin=zmin_2D_temp,
111	zmax=zmax_2D_temp, show_colorbar=show_colorbar)
112
113	def calculateDepth(self):
114	"""
115	Re-calculate the plot depth parameters depending on the scale
116	"""
117	# Toggle the scale
118	zmin_temp = self.zmin
119	zmax_temp = self.zmax
120	# self.scale predefined in the baseclass
121	if self.scale == 'log_{10}':
122	if self.zmin is not None:
123	zmin_temp = numpy.power(10, self.zmin)
124	if self.zmax is not None:
125	zmax_temp = numpy.power(10, self.zmax)
126	else:
127	if self.zmin is not None:
128	# min log value: no log(negative)
129	zmin_temp = MIN_Z if self.zmin <= 0 else numpy.log10(self.zmin)
130	if self.zmax is not None:
131	zmax_temp = numpy.log10(self.zmax)
132
133	return (zmin_temp, zmax_temp)
134
135
136	def createContextMenu(self):
137	"""
138	Define common context menu and associated actions for the MPL widget
139	"""
140	self.defaultContextMenu()
141
142	self.contextMenu.addSeparator()
143	self.actionDataInfo = self.contextMenu.addAction("&DataInfo")
144	self.actionDataInfo.triggered.connect(
145	functools.partial(self.onDataInfo, self.data))
146
147	self.actionSavePointsAsFile = self.contextMenu.addAction("&Save Points as a File")
148	self.actionSavePointsAsFile.triggered.connect(
149	functools.partial(self.onSavePoints, self.data))
150	self.contextMenu.addSeparator()
151
152	self.actionCircularAverage = self.contextMenu.addAction("&Perform Circular Average")
153	self.actionCircularAverage.triggered.connect(self.onCircularAverage)
154
155	self.actionSectorView = self.contextMenu.addAction("&Sector [Q View]")
156	self.actionSectorView.triggered.connect(self.onSectorView)
157	self.actionAnnulusView = self.contextMenu.addAction("&Annulus [Phi View]")
158	self.actionAnnulusView.triggered.connect(self.onAnnulusView)
159	self.actionBoxSum = self.contextMenu.addAction("&Box Sum")
160	self.actionBoxSum.triggered.connect(self.onBoxSum)
161	self.actionBoxAveragingX = self.contextMenu.addAction("&Box Averaging in Qx")
162	self.actionBoxAveragingX.triggered.connect(self.onBoxAveragingX)
163	self.actionBoxAveragingY = self.contextMenu.addAction("&Box Averaging in Qy")
164	self.actionBoxAveragingY.triggered.connect(self.onBoxAveragingY)
165	# Additional items for slicer interaction
166	if self.slicer:
167	self.actionClearSlicer = self.contextMenu.addAction("&Clear Slicer")
168	self.actionClearSlicer.triggered.connect(self.onClearSlicer)
169	if self.slicer.__class__.__name__ != "BoxSumCalculator":
170	self.actionEditSlicer = self.contextMenu.addAction("&Edit Slicer Parameters")
171	self.actionEditSlicer.triggered.connect(self.onEditSlicer)
172	self.contextMenu.addSeparator()
173	self.actionColorMap = self.contextMenu.addAction("&2D Color Map")
174	self.actionColorMap.triggered.connect(self.onColorMap)
175	self.contextMenu.addSeparator()
176	self.actionChangeScale = self.contextMenu.addAction("Toggle Linear/Log Scale")
177	self.actionChangeScale.triggered.connect(self.onToggleScale)
178
179	def createContextMenuQuick(self):
180	"""
181	Define context menu and associated actions for the quickplot MPL widget
182	"""
183	self.defaultContextMenu()
184
185	if self.dimension == 2:
186	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
187	self.contextMenu.addSeparator()
188	self.actionChangeScale = self.contextMenu.addAction("Toggle Linear/Log Scale")
189
190	# Define the callbacks
191	self.actionChangeScale.triggered.connect(self.onToggleScale)
192	if self.dimension == 2:
193	self.actionToggleGrid.triggered.connect(self.onGridToggle)
194
195	def onToggleScale(self, event):
196	"""
197	Toggle axis and replot image
198	"""
199	# self.scale predefined in the baseclass
200	if self.scale == 'log_{10}':
201	self.scale = 'linear'
202	else:
203	self.scale = 'log_{10}'
204
205	self.plot()
206
207	def onClearSlicer(self):
208	"""
209	Remove all sclicers from the chart
210	"""
211	if self.slicer is None:
212	return
213
214	self.slicer.clear()
215	self.canvas.draw()
216	self.slicer = None
217
218	def onEditSlicer(self):
219	"""
220	Present a small dialog for manipulating the current slicer
221	"""
222	assert self.slicer
223	# Only show the dialog if not currently shown
224	if self.slicer_widget:
225	return
226	def slicer_closed():
227	# Need to disconnect the signal!!
228	self.slicer_widget.close_signal.disconnect()
229	# reset slicer_widget on "Edit Slicer Parameters" window close
230	self.slicer_widget = None
231
232	self.param_model = self.slicer.model()
233	# Pass the model to the Slicer Parameters widget
234	self.slicer_widget = SlicerParameters(model=self.param_model,
235	validate_method=self.slicer.validate)
236	self.slicer_widget.close_signal.connect(slicer_closed)
237	# Add the plot to the workspace
238	self.manager.parent.workspace().addWindow(self.slicer_widget)
239
240	self.slicer_widget.show()
241
242	def onCircularAverage(self):
243	"""
244	Perform circular averaging on Data2D
245	"""
246	# Find the best number of bins
247	npt = numpy.sqrt(len(self.data.data[numpy.isfinite(self.data.data)]))
248	npt = numpy.floor(npt)
249	# compute the maximum radius of data2D
250	self.qmax = max(numpy.fabs(self.data.xmax),
251	numpy.fabs(self.data.xmin))
252	self.ymax = max(numpy.fabs(self.data.ymax),
253	numpy.fabs(self.data.ymin))
254	self.radius = numpy.sqrt(numpy.power(self.qmax, 2) + numpy.power(self.ymax, 2))
255	#Compute beam width
256	bin_width = (self.qmax + self.qmax) / npt
257	# Create data1D circular average of data2D
258	circle = CircularAverage(r_min=0, r_max=self.radius, bin_width=bin_width)
259	circ = circle(self.data)
260	dxl = circ.dxl if hasattr(circ, "dxl") else None
261	dxw = circ.dxw if hasattr(circ, "dxw") else None
262
263	new_plot = Data1D(x=circ.x, y=circ.y, dy=circ.dy, dx=circ.dx)
264	new_plot.dxl = dxl
265	new_plot.dxw = dxw
266	new_plot.name = new_plot.title = "Circ avg " + self.data.name
267	new_plot.source = self.data.source
268	new_plot.interactive = True
269	new_plot.detector = self.data.detector
270
271	# Define axes if not done yet.
272	new_plot.xaxis("\\rm{Q}", "A^{-1}")
273	if hasattr(self.data, "scale") and \
274	self.data.scale == 'linear':
275	new_plot.ytransform = 'y'
276	new_plot.yaxis("\\rm{Residuals} ", "normalized")
277	else:
278	new_plot.yaxis("\\rm{Intensity} ", "cm^{-1}")
279
280	new_plot.group_id = "2daverage" + self.data.name
281	new_plot.id = "Circ avg " + self.data.name
282	new_plot.is_data = True
283	variant_plot = QtCore.QVariant(new_plot)
284	GuiUtils.updateModelItemWithPlot(self._item, variant_plot, new_plot.id)
285	self.manager.communicator.plotUpdateSignal.emit([new_plot])
286
287	def setSlicer(self, slicer):
288	"""
289	Clear the previous slicer and create a new one.
290	slicer: slicer class to create
291	"""
292	# Clear current slicer
293	if self.slicer is not None:
294	self.slicer.clear()
295	# Create a new slicer
296	self.slicer_z += 1
297	self.slicer = slicer(self, self.ax, item=self._item, zorder=self.slicer_z)
298	self.ax.set_ylim(self.data.ymin, self.data.ymax)
299	self.ax.set_xlim(self.data.xmin, self.data.xmax)
300	# Draw slicer
301	self.figure.canvas.draw()
302	self.slicer.update()
303
304	# Reset the model on the Edit slicer parameters widget
305	self.param_model = self.slicer.model()
306	if self.slicer_widget:
307	self.slicer_widget.setModel(self.param_model)
308
309	def onSectorView(self):
310	"""
311	Perform sector averaging on Q and draw sector slicer
312	"""
313	self.setSlicer(slicer=SectorInteractor)
314
315	def onAnnulusView(self):
316	"""
317	Perform sector averaging on Phi and draw annulus slicer
318	"""
319	self.setSlicer(slicer=AnnulusInteractor)
320
321	def onBoxSum(self):
322	"""
323	Perform 2D Data averaging Qx and Qy.
324	Display box slicer details.
325	"""
326	self.onClearSlicer()
327	self.slicer_z += 1
328	self.slicer = BoxSumCalculator(self, self.ax, zorder=self.slicer_z)
329
330	self.ax.set_ylim(self.data.ymin, self.data.ymax)
331	self.ax.set_xlim(self.data.xmin, self.data.xmax)
332	self.figure.canvas.draw()
333	self.slicer.update()
334
335	# Get the BoxSumCalculator model.
336	self.box_sum_model = self.slicer.model()
337	# Pass the BoxSumCalculator model to the BoxSum widget
338	self.boxwidget = BoxSum(self, model=self.box_sum_model)
339	# Add the plot to the workspace
340	self.manager.parent.workspace().addWindow(self.boxwidget)
341	self.boxwidget.show()
342
343	def onBoxAveragingX(self):
344	"""
345	Perform 2D data averaging on Qx
346	Create a new slicer.
347	"""
348	self.setSlicer(slicer=BoxInteractorX)
349
350	def onBoxAveragingY(self):
351	"""
352	Perform 2D data averaging on Qy
353	Create a new slicer .
354	"""
355	self.setSlicer(slicer=BoxInteractorY)
356
357	def onColorMap(self):
358	"""
359	Display the color map dialog and modify the plot's map accordingly
360	"""
361	color_map_dialog = ColorMap(self, cmap=self.cmap,
362	vmin=self.vmin,
363	vmax=self.vmax,
364	data=self.data)
365
366	color_map_dialog.apply_signal.connect(self.onApplyMap)
367
368	if color_map_dialog.exec_() == QtGui.QDialog.Accepted:
369	self.onApplyMap(color_map_dialog.norm(), color_map_dialog.cmap())
370
371	def onApplyMap(self, v_values, cmap):
372	"""
373	Update the chart color map based on data passed from the widget
374	"""
375	self.cmap = str(cmap)
376	self.vmin, self.vmax = v_values
377	# Redraw the chart with new cmap
378	self.plot()
379
380	def showPlot(self, data, qx_data, qy_data, xmin, xmax, ymin, ymax,
381	zmin, zmax, label='data2D', cmap=DEFAULT_CMAP, show_colorbar=True):
382	"""
383	Render and show the current data
384	"""
385	self.qx_data = qx_data
386	self.qy_data = qy_data
387	self.xmin = xmin
388	self.xmax = xmax
389	self.ymin = ymin
390	self.ymax = ymax
391	self.zmin = zmin
392	self.zmax = zmax
393	# If we don't have any data, skip.
394	if data is None:
395	return
396	if data.ndim == 0:
397	return
398	elif data.ndim == 1:
399	output = PlotUtilities.build_matrix(data, self.qx_data, self.qy_data)
400	else:
401	output = copy.deepcopy(data)
402
403	zmin_temp = self.zmin
404	# check scale
405	if self.scale == 'log_{10}':
406	try:
407	if self.zmin <= 0 and len(output[output > 0]) > 0:
408	zmin_temp = self.zmin
409	output[output > 0] = numpy.log10(output[output > 0])
410	elif self.zmin <= 0:
411	zmin_temp = self.zmin
412	output[output > 0] = numpy.zeros(len(output))
413	output[output <= 0] = MIN_Z
414	else:
415	zmin_temp = self.zmin
416	output[output > 0] = numpy.log10(output[output > 0])
417	except:
418	#Too many problems in 2D plot with scale
419	output[output > 0] = numpy.log10(output[output > 0])
420	pass
421
422	self.cmap = cmap
423	if self.dimension != 3:
424	#Re-adjust colorbar
425	self.figure.subplots_adjust(left=0.2, right=.8, bottom=.2)
426
427	zmax_temp = self.zmax
428	if self.vmin is not None:
429	zmin_temp = self.vmin
430	zmax_temp = self.vmax
431
432	im = self.ax.imshow(output, interpolation='nearest',
433	# origin='lower',
434	vmin=zmin_temp, vmax=zmax_temp,
435	cmap=self.cmap,
436	extent=(self.xmin, self.xmax,
437	self.ymin, self.ymax))
438
439	cbax = self.figure.add_axes([0.84, 0.2, 0.02, 0.7])
440
441	# Current labels for axes
442	self.ax.set_ylabel(self.y_label)
443	self.ax.set_xlabel(self.x_label)
444
445	# Title only for regular charts
446	if not self.quickplot:
447	self.ax.set_title(label=self._title)
448
449	if cbax is None:
450	ax.set_frame_on(False)
451	cb = self.figure.colorbar(im, shrink=0.8, aspect=20)
452	else:
453	cb = self.figure.colorbar(im, cax=cbax)
454
455	cb.update_bruteforce(im)
456	cb.set_label('$' + self.scale + '$')
457
458	self.vmin = cb.vmin
459	self.vmax = cb.vmax
460
461	if show_colorbar is False:
462	cb.remove()
463
464	else:
465	# clear the previous 2D from memory
466	self.figure.clear()
467
468	self.figure.subplots_adjust(left=0.1, right=.8, bottom=.1)
469
470	data_x, data_y = numpy.meshgrid(self._data.x_bins[0:-1],
471	self._data.y_bins[0:-1])
472
473	ax = Axes3D(self.figure)
474
475	# Disable rotation for large sets.
476	# TODO: Define "large" for a dataset
477	SET_TOO_LARGE = 500
478	if len(data_x) > SET_TOO_LARGE:
479	ax.disable_mouse_rotation()
480
481	self.figure.canvas.resizing = False
482	im = ax.plot_surface(data_x, data_y, output, rstride=1,
483	cstride=1, cmap=cmap,
484	linewidth=0, antialiased=False)
485	self.ax.set_axis_off()
486
487	if self.dimension != 3:
488	self.figure.canvas.draw_idle()
489	else:
490	self.figure.canvas.draw()
491
492	def update(self):
493	self.figure.canvas.draw()
494
495	def draw(self):
496	self.figure.canvas.draw()
497
498	def replacePlot(self, id, new_plot):
499	"""
500	Replace data in current chart.
501	This effectively refreshes the chart with changes to one of its plots
502	"""
503	self.plot(data=new_plot)
504
505
506	class Plotter2D(QtGui.QDialog, Plotter2DWidget):
507	"""
508	Plotter widget implementation
509	"""
510	def __init__(self, parent=None, quickplot=False, dimension=2):
511	QtGui.QDialog.__init__(self)
512	Plotter2DWidget.__init__(self, manager=parent, quickplot=quickplot, dimension=dimension)
513	icon = QtGui.QIcon()
514	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
515	self.setWindowIcon(icon)

Note: See TracBrowser for help on using the repository browser.

SasView

source: sasview/src/sas/qtgui/Plotting/Plotter2D.py @ 6b43c58

Download in other formats: