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Merge pull request #844 from markotoplak/tooltopsdistr
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owdistributions: tooltips
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@markotoplak
markotoplak committed Dec 11, 2015
2 parents 9647972 + d189256 commit 01fb5d7
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Showing 2 changed files with 74 additions and 31 deletions.
103 changes: 73 additions & 30 deletions Orange/widgets/visualize/owdistributions.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -12,6 +12,7 @@

from PyQt4 import QtGui, QtCore
from PyQt4.QtCore import Qt
from PyQt4.QtGui import QToolTip
import numpy
import pyqtgraph as pg

Expand All @@ -23,6 +24,8 @@
from Orange.widgets.visualize.owlinearprojection import LegendItem, ScatterPlotItem
from Orange.widgets.io import FileFormat

from .owscatterplotgraph import HelpEventDelegate

def selected_index(view):
"""Return the selected integer `index` (row) in the view.
Expand Down Expand Up @@ -138,7 +141,8 @@ def __init__(self):
self.cb_disc_cont = gui.checkBox(
gui.indentedBox(box, sep=4),
self, "disc_cont", "Bin continuous variables",
callback=self._on_groupvar_idx_changed)
callback=self._on_groupvar_idx_changed,
tooltip="Show continuous variables as discrete.")

box = gui.widgetBox(self.controlArea, "Group by")
self.icons = gui.attributeIconDict
Expand All @@ -148,33 +152,35 @@ def __init__(self):
box2 = gui.indentedBox(box, sep=4)
self.cb_rel_freq = gui.checkBox(
box2, self, "relative_freq", "Show relative frequencies",
callback=self._on_relative_freq_changed)
callback=self._on_relative_freq_changed,
tooltip="Normalize probabilities so that probabilities for each group-by value sum to 1.")
gui.separator(box2)
self.cb_prob = gui.comboBox(
box2, self, "show_prob", label="Show probabilities",
orientation="horizontal",
callback=self._on_relative_freq_changed)
callback=self._on_relative_freq_changed,
tooltip="Show probabilities for a chosen group-by value (at each point probabilities for all group-by values sum to 1).")

plotview = pg.PlotWidget(background=None)
plotview.setRenderHint(QtGui.QPainter.Antialiasing)
self.mainArea.layout().addWidget(plotview)
self.plotview = pg.PlotWidget(background=None)
self.plotview.setRenderHint(QtGui.QPainter.Antialiasing)
self.mainArea.layout().addWidget(self.plotview)
w = QtGui.QLabel()
w.setSizePolicy(QtGui.QSizePolicy.Expanding, QtGui.QSizePolicy.Fixed)
self.mainArea.layout().addWidget(w, Qt.AlignCenter)

self.plot = pg.PlotItem()
self.plot.hideButtons()
plotview.setCentralItem(self.plot)
self.ploti = pg.PlotItem()
self.plot = self.ploti.vb
self.ploti.hideButtons()
self.plotview.setCentralItem(self.ploti)

self.plot_prob = pg.ViewBox()
self.plot.hideAxis('right')
self.plot.scene().addItem(self.plot_prob)
self.plot.getAxis("right").linkToView(self.plot_prob)
self.plot.getAxis("right").setLabel("Probability")
self.ploti.hideAxis('right')
self.ploti.scene().addItem(self.plot_prob)
self.ploti.getAxis("right").linkToView(self.plot_prob)
self.ploti.getAxis("right").setLabel("Probability")
self.plot_prob.setZValue(10)
self.plot_prob.setXLink(self.plot)
self.plot_prob.setXLink(self.ploti)
self.update_views()
self.plot.vb.sigResized.connect(self.update_views)
self.ploti.vb.sigResized.connect(self.update_views)
self.plot_prob.setRange(yRange=[0,1])

self.inline_graph_report()
Expand All @@ -183,22 +189,26 @@ def disable_mouse(plot):
plot.setMouseEnabled(False, False)
plot.setMenuEnabled(False)

disable_mouse(self.plot.getViewBox())
disable_mouse(self.plot)
disable_mouse(self.plot_prob)

self.tooltip_items = []
self.plot.scene().installEventFilter(
HelpEventDelegate(self.help_event, self))

pen = QtGui.QPen(self.palette().color(QtGui.QPalette.Text))
for axis in ("left", "bottom"):
self.plot.getAxis(axis).setPen(pen)
self.ploti.getAxis(axis).setPen(pen)

self._legend = LegendItem()
self._legend.setParentItem(self.plot.getViewBox())
self._legend.setParentItem(self.plot)
self._legend.hide()
self._legend.anchor((1, 0), (1, 0))
self.graphButton.clicked.connect(self.save_graph)

def update_views(self):
self.plot_prob.setGeometry(self.plot.vb.sceneBoundingRect())
self.plot_prob.linkedViewChanged(self.plot.vb, self.plot_prob.XAxis)
self.plot_prob.setGeometry(self.plot.sceneBoundingRect())
self.plot_prob.linkedViewChanged(self.plot, self.plot_prob.XAxis)

def set_data(self, data):
self.closeContext()
Expand All @@ -216,7 +226,7 @@ def set_data(self, data):
self.groupvarview.addItem(self.icons[var], var.name)
if domain.has_discrete_class:
self.groupvar_idx = \
self.groupvarmodel.index(domain.class_var)
self.groupvarmodel[1:].index(domain.class_var) + 1
self.openContext(domain)
self.variable_idx = min(max(self.variable_idx, 0),
len(self.varmodel) - 1)
Expand Down Expand Up @@ -285,15 +295,29 @@ def _setup(self):
self.display_distribution()
self.plot.autoRange()

def help_event(self, ev):
in_graph_coor = self.plot.mapSceneToView(ev.scenePos())
ctooltip = []
for vb, item in self.tooltip_items:
if isinstance(item, pg.PlotCurveItem) and item.mouseShape().contains(vb.mapSceneToView(ev.scenePos())):
ctooltip.append(item.tooltip)
elif isinstance(item, DistributionBarItem) and item.boundingRect().contains(vb.mapSceneToView(ev.scenePos())):
ctooltip.append(item.tooltip)
if ctooltip:
QToolTip.showText(ev.screenPos(), "\n\n".join(ctooltip), widget=self.plotview)
return True
return False

def display_distribution(self):
dist = self.distributions
var = self.var
assert len(dist) > 0
self.plot.clear()
self.plot_prob.clear()
self.plot.hideAxis('right')
self.ploti.hideAxis('right')
self.tooltip_items = []

bottomaxis = self.plot.getAxis("bottom")
bottomaxis = self.ploti.getAxis("bottom")
bottomaxis.setLabel(var.name)
bottomaxis.resizeEvent()

Expand All @@ -311,13 +335,17 @@ def display_distribution(self):
fillLevel=0, brush=QtGui.QBrush(Qt.gray),
pen=pen)
self.plot.addItem(item)
item.tooltip = "Density"
self.tooltip_items.append((self.plot, item))
else:
bottomaxis.setTicks([list(enumerate(var.values))])
for i, w in enumerate(dist):
geom = QtCore.QRectF(i - 0.33, 0, 0.66, w)
item = DistributionBarItem(geom, [1.0],
[QtGui.QColor(128, 128, 128)])
self.plot.addItem(item)
item.tooltip = "Frequency for %s: %r" % (var.values[i], w)
self.tooltip_items.append((self.plot, item))

def _on_relative_freq_changed(self):
self.set_left_axis_name()
Expand All @@ -337,13 +365,14 @@ def display_contingency(self):
self.plot.clear()
self.plot_prob.clear()
self._legend.clear()
self.tooltip_items = []

if self.show_prob:
self.plot.showAxis('right')
self.ploti.showAxis('right')
else:
self.plot.hideAxis('right')
self.ploti.hideAxis('right')

bottomaxis = self.plot.getAxis("bottom")
bottomaxis = self.ploti.getAxis("bottom")
bottomaxis.setLabel(var.name)
bottomaxis.resizeEvent()

Expand Down Expand Up @@ -379,7 +408,7 @@ def display_contingency(self):
curvesline.append((X,Y))

for t in [ "fill", "line" ]:
for (X, Y), color, w in reversed(list(zip(curvesline, colors, weights))):
for (X, Y), color, w, cval in reversed(list(zip(curvesline, colors, weights, cvar_values))):
item = pg.PlotCurveItem()
pen = QtGui.QPen(QtGui.QBrush(color), 3)
pen.setCosmetic(True)
Expand All @@ -389,6 +418,10 @@ def display_contingency(self):
fillLevel=0 if t == "fill" else None,
brush=QtGui.QBrush(color), pen=pen)
self.plot.addItem(item)
if t == "line":
item.tooltip = ("Normalized density " if self.relative_freq else "Density ") \
+ "\n"+ cvar.name + "=" + cval
self.tooltip_items.append((self.plot, item))

if self.show_prob:
M_EST = 5 #for M estimate
Expand All @@ -401,7 +434,7 @@ def display_contingency(self):

i = len(curvesinterp) + 1
show_all = self.show_prob == i
for Y, color in reversed(list(zip(curvesinterp, colors))):
for Y, color, cval in reversed(list(zip(curvesinterp, colors, cvar_values))):
i -= 1
if show_all or self.show_prob == i:
item = pg.PlotCurveItem()
Expand All @@ -412,6 +445,8 @@ def display_contingency(self):
item.setData(inter_X[legal], prob, antialias=True, stepMode=False,
fillLevel=None, brush=None, pen=pen)
self.plot_prob.addItem(item)
item.tooltip = "Probability that \n" + cvar.name + "=" + cval
self.tooltip_items.append((self.plot_prob, item))

elif var and var.is_discrete:
bottomaxis.setTicks([list(enumerate(var.values))])
Expand Down Expand Up @@ -442,8 +477,15 @@ def display_contingency(self):
if self.relative_freq
else dist/maxh, colors)
self.plot.addItem(item)
tooltip = "\n".join("%s: %.*f" % (n, 3 if self.relative_freq else 1, v)
for n,v in zip(cvar_values, dist/scvar if self.relative_freq else dist ))
item.tooltip = ("Normalized frequency " if self.relative_freq else "Frequency ") \
+ "(" + cvar.name + "=" + value + "):" \
+ "\n" + tooltip
self.tooltip_items.append((self.plot, item))

if self.show_prob:
item.tooltip += "\n\nProbabilities:"
for ic, a in enumerate(dist):
if self.show_prob - 1 != ic and \
self.show_prob - 1 != len(dist):
Expand All @@ -455,6 +497,7 @@ def display_contingency(self):
if not 1e-6 < prob < 1 - 1e-6:
continue
ci = 1.96 * sqrt(prob * (1 - prob) / dsum)
item.tooltip += "\n%s: %.3f 卤 %.3f" % (cvar_values[ic], prob, ci)
mark = pg.ScatterPlotItem()
bar = pg.ErrorBarItem()
pen = QtGui.QPen(QtGui.QBrush(QtGui.QColor(0)), 1)
Expand All @@ -478,7 +521,7 @@ def display_contingency(self):
self._legend.show()

def set_left_axis_name(self):
leftaxis = self.plot.getAxis("left")
leftaxis = self.ploti.getAxis("left")
set_label = leftaxis.setLabel
if self.var and self.var.is_continuous:
set_label(["Density", "Relative density"]
Expand Down
2 changes: 1 addition & 1 deletion Orange/widgets/visualize/owscatterplotgraph.py
View file
Original file line number Diff line number Diff line change
Expand Up @@ -1021,7 +1021,7 @@ def help_event(self, event):
return False


class HelpEventDelegate(QObject):
class HelpEventDelegate(QObject): #also used by owdistributions
def __init__(self, delegate, parent=None):
super().__init__(parent)
self.delegate = delegate
Expand Down

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