Plotter.py @ 7a1481f

ESS_GUIESS_GUI_opencl

Last change on this file since 7a1481f was 6edd344, checked in by Piotr Rozyczko <piotr.rozyczko@…>, 6 years ago
More unit test fixes.
Property mode set to `100644`
File size: 27.0 KB

Rev	Line
[4992ff2]	1	from PyQt5 import QtCore
	2	from PyQt5 import QtGui
	3	from PyQt5 import QtWidgets
	4
[aadf0af1]	5	import functools
	6	import copy
[0231f93]	7	import matplotlib as mpl
[facf4ca]	8	import numpy as np
[9290b1a]	9	from matplotlib.font_manager import FontProperties
[863ebca]	10
[dc5ef15]	11	from sas.qtgui.Plotting.PlotterData import Data1D
[83eb5208]	12	from sas.qtgui.Plotting.PlotterBase import PlotterBase
	13	from sas.qtgui.Plotting.AddText import AddText
	14	from sas.qtgui.Plotting.SetGraphRange import SetGraphRange
	15	from sas.qtgui.Plotting.LinearFit import LinearFit
	16	from sas.qtgui.Plotting.PlotProperties import PlotProperties
[bb57068]	17	from sas.qtgui.Plotting.ScaleProperties import ScaleProperties
[dc5ef15]	18
	19	import sas.qtgui.Utilities.GuiUtils as GuiUtils
[83eb5208]	20	import sas.qtgui.Plotting.PlotUtilities as PlotUtilities
[8cb6cd6]	21
[b016f17]	22	def _legendResize(width):
	23	"""
	24	resize factor for the legend, based on total canvas width
	25	"""
	26	# The factor 4.0 was chosen to look similar in size/ratio to what we had in 4.x
	27	return (width/100.0)+4.0
	28
[416fa8f]	29	class PlotterWidget(PlotterBase):
[c4e5400]	30	"""
	31	1D Plot widget for use with a QDialog
[fecfe28]	32	"""
[416fa8f]	33	def __init__(self, parent=None, manager=None, quickplot=False):
	34	super(PlotterWidget, self).__init__(parent, manager=manager, quickplot=quickplot)
[570a58f9]	35
[27313b7]	36	self.parent = parent
[8cb6cd6]	37
[aadf0af1]	38	# Dictionary of {plot_id:Data1d}
	39	self.plot_dict = {}
[c2f3ca2]	40	# Dictionaty of {plot_id:line}
[aadf0af1]	41
[c2f3ca2]	42	self.plot_lines = {}
[fed94a2]	43	# Window for text add
	44	self.addText = AddText(self)
[aadf0af1]	45
[fed94a2]	46	# Log-ness of the axes
[570a58f9]	47	self.xLogLabel = "log10(x)"
	48	self.yLogLabel = "log10(y)"
	49
	50	# Data container for the linear fit
[fed94a2]	51	self.fit_result = Data1D(x=[], y=[], dy=None)
	52	self.fit_result.symbol = 13
	53	self.fit_result.name = "Fit"
[570a58f9]	54
[31c5b58]	55	@property
	56	def data(self):
	57	return self._data
	58
	59	@data.setter
	60	def data(self, value):
[8cb6cd6]	61	""" data setter """
[31c5b58]	62	self._data = value
[cb4d219]	63	if value._xunit:
	64	self.xLabel = "%s(%s)"%(value._xaxis, value._xunit)
	65	else:
	66	self.xLabel = "%s"%(value._xaxis)
	67	if value._yunit:
	68	self.yLabel = "%s(%s)"%(value._yaxis, value._yunit)
	69	else:
	70	self.yLabel = "%s"%(value._yaxis)
	71
	72	if value.scale == 'linear' or value.isSesans:
[749b715]	73	self.xscale = 'linear'
	74	self.yscale = 'linear'
[aadf0af1]	75	self.title(title=value.name)
[8cb6cd6]	76
[04ac604]	77	def plot(self, data=None, color=None, marker=None, hide_error=False, transform=True):
[8cb6cd6]	78	"""
[aadf0af1]	79	Add a new plot of self._data to the chart.
[8cb6cd6]	80	"""
[9290b1a]	81	# Data1D
	82	if isinstance(data, Data1D):
	83	self.data = data
[34f13a83]	84
	85	if not self._data:
[1f34e00]	86	return
[9290b1a]	87
[87cc73a]	88	is_fit = (self.data.id=="fit")
[570a58f9]	89
[685e0e3]	90	if not is_fit:
	91	# make sure we have some function to operate on
	92	if self.data.xtransform is None:
	93	self.data.xtransform = 'log10(x)'
	94	if self.data.ytransform is None:
	95	self.data.ytransform = 'log10(y)'
[d0952de]	96	#Added condition to Dmax explorer from P(r) perspective
	97	if self.data._xaxis == 'D_{max}':
	98	self.xscale = 'linear'
[685e0e3]	99	# Transform data if required.
[04ac604]	100	if transform and (self.data.xtransform is not None or self.data.ytransform is not None):
[685e0e3]	101	_, _, xscale, yscale = GuiUtils.xyTransform(self.data, self.data.xtransform, self.data.ytransform)
	102	if xscale != 'log':
	103	self.xscale = xscale
	104	if yscale != 'log':
	105	self.yscale = yscale
	106
	107	# Redefine the Scale properties dialog
	108	self.properties = ScaleProperties(self,
	109	init_scale_x=self.data.xtransform,
	110	init_scale_y=self.data.ytransform)
[f182f93]	111
[87cc73a]	112	# Shortcuts
[ef01be4]	113	ax = self.ax
[87cc73a]	114	x = self._data.view.x
	115	y = self._data.view.y
	116
	117	# Marker symbol. Passed marker is one of matplotlib.markers characters
	118	# Alternatively, picked up from Data1D as an int index of PlotUtilities.SHAPES dict
	119	if marker is None:
	120	marker = self.data.symbol
[6fd4e36]	121	# Try name first
	122	try:
[cb4d219]	123	marker = dict(PlotUtilities.SHAPES)[marker]
[6fd4e36]	124	except KeyError:
[8f83719f]	125	marker = list(PlotUtilities.SHAPES.values())[marker]
[87cc73a]	126
[6fd4e36]	127	assert marker is not None
[87cc73a]	128	# Plot name
[b789967]	129	if self.data.title:
	130	self.title(title=self.data.title)
	131	else:
	132	self.title(title=self.data.name)
[87cc73a]	133
	134	# Error marker toggle
	135	if hide_error is None:
	136	hide_error = self.data.hide_error
	137
	138	# Plot color
	139	if color is None:
	140	color = self.data.custom_color
	141
	142	color = PlotUtilities.getValidColor(color)
[0231f93]	143	self.data.custom_color = color
[87cc73a]	144
	145	markersize = self._data.markersize
	146
[facf4ca]	147	# Include scaling (log vs. linear)
[8274471e]	148	ax.set_xscale(self.xscale, nonposx='clip')
[facf4ca]	149	ax.set_yscale(self.yscale, nonposy='clip')
	150
	151	# define the ranges
	152	self.setRange = SetGraphRange(parent=self,
	153	x_range=self.ax.get_xlim(), y_range=self.ax.get_ylim())
	154
[239214f]	155	# Draw non-standard markers
	156	l_width = markersize * 0.4
	157	if marker == '-' or marker == '--':
	158	line = self.ax.plot(x, y, color=color, lw=l_width, marker='',
	159	linestyle=marker, label=self._title, zorder=10)[0]
	160
	161	elif marker == 'vline':
	162	y_min = min(y)*9.0/10.0 if min(y) < 0 else 0.0
	163	line = self.ax.vlines(x=x, ymin=y_min, ymax=y, color=color,
	164	linestyle='-', label=self._title, lw=l_width, zorder=1)
	165
	166	elif marker == 'step':
	167	line = self.ax.step(x, y, color=color, marker='', linestyle='-',
	168	label=self._title, lw=l_width, zorder=1)[0]
[8cb6cd6]	169
[c4e5400]	170	else:
[87cc73a]	171	# plot data with/without errorbars
	172	if hide_error:
	173	line = ax.plot(x, y, marker=marker, color=color, markersize=markersize,
	174	linestyle='', label=self._title, picker=True)
	175	else:
[facf4ca]	176	dy = self._data.view.dy
	177	# Convert tuple (lo,hi) to array [(x-lo),(hi-x)]
	178	if dy is not None and type(dy) == type(()):
	179	dy = np.vstack((y - dy[0], dy[1] - y)).transpose()
	180
[87cc73a]	181	line = ax.errorbar(x, y,
[facf4ca]	182	yerr=dy,
	183	xerr=None,
[87cc73a]	184	capsize=2, linestyle='',
	185	barsabove=False,
	186	color=color,
	187	marker=marker,
	188	markersize=markersize,
	189	lolims=False, uplims=False,
	190	xlolims=False, xuplims=False,
	191	label=self._title,
[facf4ca]	192	zorder=1,
[87cc73a]	193	picker=True)
[8cb6cd6]	194
[aadf0af1]	195	# Update the list of data sets (plots) in chart
[0cd98a1]	196	self.plot_dict[self._data.name] = self.data
[aadf0af1]	197
[0cd98a1]	198	self.plot_lines[self._data.name] = line
[c2f3ca2]	199
[8cb6cd6]	200	# Now add the legend with some customizations.
[f0bb711]	201
[42787fb]	202	if self.showLegend:
[b016f17]	203	width=_legendResize(self.canvas.size().width())
	204
	205	self.legend = ax.legend(loc='upper right', shadow=True, prop={'size':width})
[42787fb]	206	if self.legend:
	207	self.legend.set_picker(True)
[8cb6cd6]	208
[6d05e1d]	209	# Current labels for axes
[570a58f9]	210	if self.y_label and not is_fit:
	211	ax.set_ylabel(self.y_label)
	212	if self.x_label and not is_fit:
	213	ax.set_xlabel(self.x_label)
[6d05e1d]	214
[8cb6cd6]	215	# refresh canvas
[d9e7792]	216	self.canvas.draw_idle()
[8cb6cd6]	217
[b016f17]	218	def onResize(self, event):
	219	"""
	220	Resize the legend window/font on canvas resize
	221	"""
[6edd344]	222	if not self.showLegend:
	223	return
[b016f17]	224	width = _legendResize(event.width)
	225	# resize the legend to follow the canvas width.
	226	self.legend.prop.set_size(width)
	227
[aadf0af1]	228	def createContextMenu(self):
[c4e5400]	229	"""
	230	Define common context menu and associated actions for the MPL widget
	231	"""
	232	self.defaultContextMenu()
	233
[aadf0af1]	234	# Separate plots
	235	self.addPlotsToContextMenu()
	236
[27313b7]	237	# Additional menu items
	238	self.contextMenu.addSeparator()
	239	self.actionAddText = self.contextMenu.addAction("Add Text")
	240	self.actionRemoveText = self.contextMenu.addAction("Remove Text")
	241	self.contextMenu.addSeparator()
	242	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	243	self.contextMenu.addSeparator()
	244	self.actionSetGraphRange = self.contextMenu.addAction("Set Graph Range")
	245	self.actionResetGraphRange =\
	246	self.contextMenu.addAction("Reset Graph Range")
	247	# Add the title change for dialogs
[aadf0af1]	248	self.contextMenu.addSeparator()
	249	self.actionWindowTitle = self.contextMenu.addAction("Window Title")
[27313b7]	250
	251	# Define the callbacks
	252	self.actionAddText.triggered.connect(self.onAddText)
	253	self.actionRemoveText.triggered.connect(self.onRemoveText)
	254	self.actionChangeScale.triggered.connect(self.onScaleChange)
	255	self.actionSetGraphRange.triggered.connect(self.onSetGraphRange)
	256	self.actionResetGraphRange.triggered.connect(self.onResetGraphRange)
	257	self.actionWindowTitle.triggered.connect(self.onWindowsTitle)
[c4e5400]	258
[aadf0af1]	259	def addPlotsToContextMenu(self):
	260	"""
	261	Adds operations on all plotted sets of data to the context menu
	262	"""
[b3e8629]	263	for id in list(self.plot_dict.keys()):
[aadf0af1]	264	plot = self.plot_dict[id]
[b789967]	265
	266	name = plot.name if plot.name else plot.title
[aadf0af1]	267	plot_menu = self.contextMenu.addMenu('&%s' % name)
	268
	269	self.actionDataInfo = plot_menu.addAction("&DataInfo")
	270	self.actionDataInfo.triggered.connect(
	271	functools.partial(self.onDataInfo, plot))
	272
	273	self.actionSavePointsAsFile = plot_menu.addAction("&Save Points as a File")
	274	self.actionSavePointsAsFile.triggered.connect(
	275	functools.partial(self.onSavePoints, plot))
	276	plot_menu.addSeparator()
	277
	278	if plot.id != 'fit':
	279	self.actionLinearFit = plot_menu.addAction('&Linear Fit')
[570a58f9]	280	self.actionLinearFit.triggered.connect(
	281	functools.partial(self.onLinearFit, id))
[aadf0af1]	282	plot_menu.addSeparator()
	283
	284	self.actionRemovePlot = plot_menu.addAction("Remove")
	285	self.actionRemovePlot.triggered.connect(
	286	functools.partial(self.onRemovePlot, id))
	287
	288	if not plot.is_data:
	289	self.actionFreeze = plot_menu.addAction('&Freeze')
	290	self.actionFreeze.triggered.connect(
	291	functools.partial(self.onFreeze, id))
	292	plot_menu.addSeparator()
	293
	294	if plot.is_data:
	295	self.actionHideError = plot_menu.addAction("Hide Error Bar")
	296	if plot.dy is not None and plot.dy != []:
	297	if plot.hide_error:
	298	self.actionHideError.setText('Show Error Bar')
	299	else:
	300	self.actionHideError.setEnabled(False)
	301	self.actionHideError.triggered.connect(
	302	functools.partial(self.onToggleHideError, id))
	303	plot_menu.addSeparator()
	304
	305	self.actionModifyPlot = plot_menu.addAction('&Modify Plot Property')
[87cc73a]	306	self.actionModifyPlot.triggered.connect(
	307	functools.partial(self.onModifyPlot, id))
[aadf0af1]	308
	309	def createContextMenuQuick(self):
[6d05e1d]	310	"""
	311	Define context menu and associated actions for the quickplot MPL widget
	312	"""
[c4e5400]	313	# Default actions
	314	self.defaultContextMenu()
	315
	316	# Additional actions
[6d05e1d]	317	self.actionToggleGrid = self.contextMenu.addAction("Toggle Grid On/Off")
	318	self.contextMenu.addSeparator()
	319	self.actionChangeScale = self.contextMenu.addAction("Change Scale")
	320
	321	# Define the callbacks
	322	self.actionToggleGrid.triggered.connect(self.onGridToggle)
	323	self.actionChangeScale.triggered.connect(self.onScaleChange)
	324
	325	def onScaleChange(self):
	326	"""
	327	Show a dialog allowing axes rescaling
	328	"""
[4992ff2]	329	if self.properties.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	330	self.xLogLabel, self.yLogLabel = self.properties.getValues()
[bb57068]	331	self.data.xtransform = self.xLogLabel
	332	self.data.ytransform = self.yLogLabel
[570a58f9]	333	self.xyTransform(self.xLogLabel, self.yLogLabel)
[6d05e1d]	334
[27313b7]	335	def onAddText(self):
	336	"""
	337	Show a dialog allowing adding custom text to the chart
	338	"""
[eb1a386]	339	if self.addText.exec_() != QtWidgets.QDialog.Accepted:
	340	return
	341
	342	# Retrieve the new text, its font and color
	343	extra_text = self.addText.text()
	344	extra_font = self.addText.font()
	345	extra_color = self.addText.color()
	346
	347	# Place the text on the screen at the click location
	348	pos_x = self.x_click
	349	pos_y = self.y_click
	350
	351	# Map QFont onto MPL font
	352	mpl_font = FontProperties()
	353	mpl_font.set_size(int(extra_font.pointSize()))
	354	mpl_font.set_family(str(extra_font.family()))
	355	mpl_font.set_weight(int(extra_font.weight()))
	356	# MPL style names
	357	styles = ['normal', 'italic', 'oblique']
	358	# QFont::Style maps directly onto the above
	359	try:
	360	mpl_font.set_style(styles[extra_font.style()])
	361	except:
	362	pass
	363
	364	if len(extra_text) > 0:
	365	new_text = self.ax.text(pos_x,
	366	pos_y,
	367	extra_text,
	368	color=extra_color,
	369	fontproperties=mpl_font)
	370
	371	# Update the list of annotations
	372	self.textList.append(new_text)
[d9e7792]	373	self.canvas.draw_idle()
[27313b7]	374
	375	def onRemoveText(self):
	376	"""
[9290b1a]	377	Remove the most recently added text
[27313b7]	378	"""
[d3ca363]	379	num_text = len(self.textList)
	380	if num_text < 1:
	381	return
	382	txt = self.textList[num_text - 1]
	383	text_remove = txt.get_text()
[eb1a386]	384	try:
	385	txt.remove()
	386	except ValueError:
	387	# Text got already deleted somehow
	388	pass
[d3ca363]	389	self.textList.remove(txt)
	390
	391	self.canvas.draw_idle()
[27313b7]	392
	393	def onSetGraphRange(self):
	394	"""
	395	Show a dialog allowing setting the chart ranges
	396	"""
[d3ca363]	397	# min and max of data
[4992ff2]	398	if self.setRange.exec_() == QtWidgets.QDialog.Accepted:
[257bd57]	399	x_range = self.setRange.xrange()
	400	y_range = self.setRange.yrange()
	401	if x_range is not None and y_range is not None:
	402	self.ax.set_xlim(x_range)
	403	self.ax.set_ylim(y_range)
	404	self.canvas.draw_idle()
[27313b7]	405
	406	def onResetGraphRange(self):
	407	"""
[d3ca363]	408	Resets the chart X and Y ranges to their original values
[27313b7]	409	"""
[d3ca363]	410	x_range = (self.data.x.min(), self.data.x.max())
	411	y_range = (self.data.y.min(), self.data.y.max())
[257bd57]	412	if x_range is not None and y_range is not None:
	413	self.ax.set_xlim(x_range)
	414	self.ax.set_ylim(y_range)
	415	self.canvas.draw_idle()
[27313b7]	416
[570a58f9]	417	def onLinearFit(self, id):
[aadf0af1]	418	"""
	419	Creates and displays a simple linear fit for the selected plot
	420	"""
[570a58f9]	421	selected_plot = self.plot_dict[id]
	422
	423	maxrange = (min(selected_plot.x), max(selected_plot.x))
	424	fitrange = self.ax.get_xlim()
	425
	426	fit_dialog = LinearFit(parent=self,
	427	data=selected_plot,
	428	max_range=maxrange,
	429	fit_range=fitrange,
	430	xlabel=self.xLogLabel,
	431	ylabel=self.yLogLabel)
[7969b9c]	432	fit_dialog.updatePlot.connect(self.onFitDisplay)
[4992ff2]	433	if fit_dialog.exec_() == QtWidgets.QDialog.Accepted:
[570a58f9]	434	return
[aadf0af1]	435
[87cc73a]	436	def replacePlot(self, id, new_plot):
	437	"""
	438	Remove plot 'id' and add 'new_plot' to the chart.
	439	This effectlvely refreshes the chart with changes to one of its plots
	440	"""
[4c11b2a]	441
	442	# Pull the current transform settings from the old plot
	443	selected_plot = self.plot_dict[id]
	444	new_plot.xtransform = selected_plot.xtransform
	445	new_plot.ytransform = selected_plot.ytransform
	446
[87cc73a]	447	self.removePlot(id)
	448	self.plot(data=new_plot)
	449
[aadf0af1]	450	def onRemovePlot(self, id):
	451	"""
[570a58f9]	452	Responds to the plot delete action
	453	"""
	454	self.removePlot(id)
	455
	456	if len(self.plot_dict) == 0:
	457	# last plot: graph is empty must be the panel must be destroyed
	458	self.parent.close()
	459
	460	def removePlot(self, id):
	461	"""
[aadf0af1]	462	Deletes the selected plot from the chart
	463	"""
[b3e8629]	464	if id not in list(self.plot_dict.keys()):
[570a58f9]	465	return
	466
[aadf0af1]	467	selected_plot = self.plot_dict[id]
	468
	469	plot_dict = copy.deepcopy(self.plot_dict)
	470
[b46f285]	471	# Labels might have been changed
	472	xl = self.ax.xaxis.label.get_text()
	473	yl = self.ax.yaxis.label.get_text()
	474
[aadf0af1]	475	self.plot_dict = {}
	476
[0231f93]	477	mpl.pyplot.cla()
[aadf0af1]	478	self.ax.cla()
	479
	480	for ids in plot_dict:
	481	if ids != id:
[b46f285]	482	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	483
	484	# Reset the labels
	485	self.ax.set_xlabel(xl)
	486	self.ax.set_ylabel(yl)
[d9e7792]	487	self.canvas.draw_idle()
[aadf0af1]	488
	489	def onFreeze(self, id):
	490	"""
	491	Freezes the selected plot to a separate chart
	492	"""
	493	plot = self.plot_dict[id]
[3b95b3b]	494	plot = copy.deepcopy(plot)
[e2e5f3d]	495	self.manager.add_data(data_list={id:plot})
	496	self.manager.freezeDataToItem(plot)
[aadf0af1]	497
[87cc73a]	498	def onModifyPlot(self, id):
[aadf0af1]	499	"""
	500	Allows for MPL modifications to the selected plot
	501	"""
[87cc73a]	502	selected_plot = self.plot_dict[id]
[c2f3ca2]	503	selected_line = self.plot_lines[id]
[87cc73a]	504	# Old style color - single integer for enum color
	505	# New style color - #hhhhhh
	506	color = selected_plot.custom_color
	507	# marker symbol and size
	508	marker = selected_plot.symbol
	509	marker_size = selected_plot.markersize
	510	# plot name
	511	legend = selected_plot.title
	512
	513	plotPropertiesWidget = PlotProperties(self,
	514	color=color,
	515	marker=marker,
	516	marker_size=marker_size,
	517	legend=legend)
[4992ff2]	518	if plotPropertiesWidget.exec_() == QtWidgets.QDialog.Accepted:
[87cc73a]	519	# Update Data1d
[0f3c22d]	520	selected_plot.markersize = plotPropertiesWidget.markersize()
	521	selected_plot.custom_color = plotPropertiesWidget.color()
	522	selected_plot.symbol = plotPropertiesWidget.marker()
	523	selected_plot.title = plotPropertiesWidget.legend()
[87cc73a]	524
	525	# Redraw the plot
	526	self.replacePlot(id, selected_plot)
[aadf0af1]	527
	528	def onToggleHideError(self, id):
	529	"""
	530	Toggles hide error/show error menu item
	531	"""
	532	selected_plot = self.plot_dict[id]
	533	current = selected_plot.hide_error
	534
	535	# Flip the flag
	536	selected_plot.hide_error = not current
	537
	538	plot_dict = copy.deepcopy(self.plot_dict)
	539	self.plot_dict = {}
	540
	541	# Clean the canvas
[0231f93]	542	mpl.pyplot.cla()
[aadf0af1]	543	self.ax.cla()
	544
	545	# Recreate the plots but reverse the error flag for the current
	546	for ids in plot_dict:
	547	if ids == id:
	548	self.plot(data=plot_dict[ids], hide_error=(not current))
	549	else:
	550	self.plot(data=plot_dict[ids], hide_error=plot_dict[ids].hide_error)
	551
[6d05e1d]	552	def xyTransform(self, xLabel="", yLabel=""):
	553	"""
	554	Transforms x and y in View and set the scale
	555	"""
[570a58f9]	556	# Transform all the plots on the chart
[b3e8629]	557	for id in list(self.plot_dict.keys()):
[570a58f9]	558	current_plot = self.plot_dict[id]
	559	if current_plot.id == "fit":
	560	self.removePlot(id)
	561	continue
[fed94a2]	562
[570a58f9]	563	new_xlabel, new_ylabel, xscale, yscale =\
	564	GuiUtils.xyTransform(current_plot, xLabel, yLabel)
	565	self.xscale = xscale
	566	self.yscale = yscale
[b46f285]	567
[570a58f9]	568	# Plot the updated chart
	569	self.removePlot(id)
[b46f285]	570
	571	# This assignment will wrap the label in Latex "$"
	572	self.xLabel = new_xlabel
	573	self.yLabel = new_ylabel
[04ac604]	574
	575	self.plot(data=current_plot, transform=False)
[570a58f9]	576
	577	pass # debug hook
	578
[fed94a2]	579	def onFitDisplay(self, fit_data):
	580	"""
	581	Add a linear fitting line to the chart
	582	"""
	583	# Create new data structure with fitting result
	584	tempx = fit_data[0]
	585	tempy = fit_data[1]
	586	self.fit_result.x = []
	587	self.fit_result.y = []
	588	self.fit_result.x = tempx
	589	self.fit_result.y = tempy
	590	self.fit_result.dx = None
	591	self.fit_result.dy = None
	592
	593	#Remove another Fit, if exists
[5b144c6]	594	self.removePlot("Fit")
[fed94a2]	595
	596	self.fit_result.reset_view()
	597	#self.offset_graph()
	598
	599	# Set plot properties
	600	self.fit_result.id = 'fit'
	601	self.fit_result.title = 'Fit'
	602	self.fit_result.name = 'Fit'
	603
	604	# Plot the line
[87cc73a]	605	self.plot(data=self.fit_result, marker='-', hide_error=True)
[fed94a2]	606
[3bdbfcc]	607	def onMplMouseDown(self, event):
	608	"""
	609	Left button down and ready to drag
	610	"""
	611	# Check that the LEFT button was pressed
[0268aed]	612	if event.button != 1:
	613	return
	614
	615	self.leftdown = True
	616	for text in self.textList:
	617	if text.contains(event)[0]: # If user has clicked on text
	618	self.selectedText = text
	619	return
	620	if event.inaxes is None:
	621	return
	622	try:
	623	self.x_click = float(event.xdata) # / size_x
	624	self.y_click = float(event.ydata) # / size_y
	625	except:
	626	self.position = None
[3bdbfcc]	627
[c30822c]	628	x_str = GuiUtils.formatNumber(self.x_click)
	629	y_str = GuiUtils.formatNumber(self.y_click)
	630	coord_str = "x: {}, y: {}".format(x_str, y_str)
	631	self.manager.communicator.statusBarUpdateSignal.emit(coord_str)
	632
[3bdbfcc]	633	def onMplMouseUp(self, event):
	634	"""
	635	Set the data coordinates of the click
	636	"""
	637	self.x_click = event.xdata
	638	self.y_click = event.ydata
	639
	640	# Check that the LEFT button was released
	641	if event.button == 1:
	642	self.leftdown = False
	643	self.selectedText = None
	644
	645	#release the legend
	646	if self.gotLegend == 1:
	647	self.gotLegend = 0
	648
	649	def onMplMouseMotion(self, event):
	650	"""
	651	Check if the left button is press and the mouse in moving.
	652	Compute delta for x and y coordinates and then perform the drag
	653	"""
	654	if self.gotLegend == 1 and self.leftdown:
	655	self.onLegendMotion(event)
	656	return
	657
[0268aed]	658	#if self.leftdown and self.selectedText is not None:
[9f25bce]	659	if not self.leftdown or self.selectedText is None:
[3bdbfcc]	660	return
[0268aed]	661	# User has clicked on text and is dragging
[9f25bce]	662	if event.inaxes is None:
[0268aed]	663	# User has dragged outside of axes
	664	self.selectedText = None
	665	else:
	666	# Only move text if mouse is within axes
	667	self.selectedText.set_position((event.xdata, event.ydata))
	668	self.canvas.draw_idle()
	669	return
[3bdbfcc]	670
	671	def onMplPick(self, event):
	672	"""
	673	On pick legend
	674	"""
	675	legend = self.legend
[0268aed]	676	if event.artist != legend:
	677	return
	678	# Get the box of the legend.
	679	bbox = self.legend.get_window_extent()
	680	# Get mouse coordinates at time of pick.
	681	self.mouse_x = event.mouseevent.x
	682	self.mouse_y = event.mouseevent.y
	683	# Get legend coordinates at time of pick.
	684	self.legend_x = bbox.xmin
	685	self.legend_y = bbox.ymin
	686	# Indicate we picked up the legend.
	687	self.gotLegend = 1
	688
	689	#self.legend.legendPatch.set_alpha(0.5)
[3bdbfcc]	690
	691	def onLegendMotion(self, event):
	692	"""
	693	On legend in motion
	694	"""
	695	ax = event.inaxes
[cee5c78]	696	if ax is None:
[3bdbfcc]	697	return
	698	# Event occurred inside a plotting area
	699	lo_x, hi_x = ax.get_xlim()
	700	lo_y, hi_y = ax.get_ylim()
	701	# How much the mouse moved.
	702	x = mouse_diff_x = self.mouse_x - event.x
	703	y = mouse_diff_y = self.mouse_y - event.y
	704	# Put back inside
	705	if x < lo_x:
	706	x = lo_x
	707	if x > hi_x:
	708	x = hi_x
	709	if y < lo_y:
	710	y = lo_y
	711	if y > hi_y:
	712	y = hi_y
	713	# Move the legend from its previous location by that same amount
	714	loc_in_canvas = self.legend_x - mouse_diff_x, \
	715	self.legend_y - mouse_diff_y
	716	# Transform into legend coordinate system
	717	trans_axes = self.legend.parent.transAxes.inverted()
	718	loc_in_norm_axes = trans_axes.transform_point(loc_in_canvas)
	719	self.legend_pos_loc = tuple(loc_in_norm_axes)
	720	self.legend._loc = self.legend_pos_loc
	721	self.canvas.draw_idle()
	722
	723	def onMplWheel(self, event):
	724	"""
	725	Process mouse wheel as zoom events
	726	"""
	727	ax = event.inaxes
	728	step = event.step
	729
[cee5c78]	730	if ax is not None:
[3bdbfcc]	731	# Event occurred inside a plotting area
	732	lo, hi = ax.get_xlim()
	733	lo, hi = PlotUtilities.rescale(lo, hi, step,
	734	pt=event.xdata, scale=ax.get_xscale())
	735	if not self.xscale == 'log' or lo > 0:
	736	self._scale_xlo = lo
	737	self._scale_xhi = hi
	738	ax.set_xlim((lo, hi))
	739
	740	lo, hi = ax.get_ylim()
	741	lo, hi = PlotUtilities.rescale(lo, hi, step, pt=event.ydata,
	742	scale=ax.get_yscale())
	743	if not self.yscale == 'log' or lo > 0:
	744	self._scale_ylo = lo
	745	self._scale_yhi = hi
	746	ax.set_ylim((lo, hi))
	747	else:
	748	# Check if zoom happens in the axes
	749	xdata, ydata = None, None
	750	x, y = event.x, event.y
	751
	752	for ax in self.axes:
	753	insidex, _ = ax.xaxis.contains(event)
	754	if insidex:
	755	xdata, _ = ax.transAxes.inverted().transform_point((x, y))
	756	insidey, _ = ax.yaxis.contains(event)
	757	if insidey:
	758	_, ydata = ax.transAxes.inverted().transform_point((x, y))
	759	if xdata is not None:
	760	lo, hi = ax.get_xlim()
	761	lo, hi = PlotUtilities.rescale(lo, hi, step,
	762	bal=xdata, scale=ax.get_xscale())
	763	if not self.xscale == 'log' or lo > 0:
	764	self._scale_xlo = lo
	765	self._scale_xhi = hi
	766	ax.set_xlim((lo, hi))
	767	if ydata is not None:
	768	lo, hi = ax.get_ylim()
	769	lo, hi = PlotUtilities.rescale(lo, hi, step, bal=ydata,
	770	scale=ax.get_yscale())
	771	if not self.yscale == 'log' or lo > 0:
	772	self._scale_ylo = lo
	773	self._scale_yhi = hi
	774	ax.set_ylim((lo, hi))
	775	self.canvas.draw_idle()
	776
[c4e5400]	777
[4992ff2]	778	class Plotter(QtWidgets.QDialog, PlotterWidget):
[416fa8f]	779	def __init__(self, parent=None, quickplot=False):
	780
[4992ff2]	781	QtWidgets.QDialog.__init__(self)
[aadf0af1]	782	PlotterWidget.__init__(self, parent=self, manager=parent, quickplot=quickplot)
[c4e5400]	783	icon = QtGui.QIcon()
	784	icon.addPixmap(QtGui.QPixmap(":/res/ball.ico"), QtGui.QIcon.Normal, QtGui.QIcon.Off)
	785	self.setWindowIcon(icon)
	786
[416fa8f]	787

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SasView

source: sasview/src/sas/qtgui/Plotting/Plotter.py @ 7a1481f

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