def startOptimization(self):
self.clearResults()
if self.parallelWidget.data == None: return
if self.optimizationMeasure == VIZRANK and self.fileName == "":
QMessageBox.information(
self, "No projection file",
"If you wish to optimize using VizRank you first have to load a projection file \ncreated by VizRank using Scatterplot widget.",
QMessageBox.Ok)
return
if self.parallelWidget.data == None:
QMessageBox.information(
self, "Missing data set",
"A data set has to be loaded in order to perform optimization.",
QMessageBox.Ok)
return
attrInfo = []
self.progressBarInit()
if self.optimizationMeasure == CORRELATION:
attrList = [
attr.name
for attr in self.parallelWidget.data.domain.attributes
]
self.startOptimizationButton.hide()
self.stopOptimizationButton.show()
self.canOptimize = 1
class StopOptimizationException(Exception):
pass
def progressSetWithStop(value):
if not self.canContinueOptimization():
raise StopOptimizationException()
else:
self.progressBarSet(value * 0.9)
try:
attrInfo = orngVisFuncts.computeCorrelationBetweenAttributes(
self.parallelWidget.data,
attrList,
progressCallback=progressSetWithStop)
except StopOptimizationException:
attrInfo = []
self.startOptimizationButton.show()
self.stopOptimizationButton.hide()
# self.progressBarFinished()
#attrInfo = orngVisFuncts.computeCorrelationInsideClassesBetweenAttributes(self.parallelWidget.data, attrList)
elif self.optimizationMeasure == VIZRANK:
for (val, [a1, a2]) in self.projections:
attrInfo.append((val, a1, a2))
# check if all attributes in loaded projection file are actually present in this data set
attrs = [
attr.name
for attr in self.parallelWidget.data.domain.attributes
]
for (v, a1, a2) in attrInfo:
if a1 not in attrs:
print "attribute " + a1 + " was not found in the data set. You probably loaded wrong file with VizRank projections."
return
if a2 not in attrs:
print "attribute " + a2 + " was not found in the data set. You probably loaded wrong file with VizRank projections."
return
if len(attrInfo) == 0:
print "len(attrInfo) == 0. No attribute pairs. Unable to optimize."
return
self.worstVal = -1
self.canOptimize = 1
self.startOptimizationButton.hide()
self.stopOptimizationButton.show()
#qApp.processEvents() # allow processing of other events
if self.orderAllAttributes:
orngVisFuncts.optimizeAttributeOrder(
attrInfo, len(self.parallelWidget.data.domain.attributes),
self, qApp)
else:
orngVisFuncts.optimizeAttributeOrder(attrInfo,
self.numberOfAttributes, self,
qApp)
self.stopOptimizationButton.hide()
self.startOptimizationButton.show()
self.progressBarFinished()
def startOptimization(self):
self.clearResults()
if self.parallelWidget.data == None: return
if self.optimizationMeasure == VIZRANK and self.fileName == "":
QMessageBox.information(self, "No projection file", "If you wish to optimize using VizRank you first have to load a projection file \ncreated by VizRank using Scatterplot widget.", QMessageBox.Ok)
return
if self.parallelWidget.data == None:
QMessageBox.information(self, "Missing data set", "A data set has to be loaded in order to perform optimization.", QMessageBox.Ok)
return
attrInfo = []
self.progressBarInit()
if self.optimizationMeasure == CORRELATION:
attrList = [attr.name for attr in self.parallelWidget.data.domain.attributes]
self.startOptimizationButton.hide()
self.stopOptimizationButton.show()
self.canOptimize = 1
class StopOptimizationException(Exception):
pass
def progressSetWithStop(value):
if not self.canContinueOptimization():
raise StopOptimizationException()
else:
self.progressBarSet(value * 0.9)
try:
attrInfo = orngVisFuncts.computeCorrelationBetweenAttributes(self.parallelWidget.data, attrList, progressCallback=progressSetWithStop)
except StopOptimizationException:
attrInfo = []
self.startOptimizationButton.show()
self.stopOptimizationButton.hide()
# self.progressBarFinished()
#attrInfo = orngVisFuncts.computeCorrelationInsideClassesBetweenAttributes(self.parallelWidget.data, attrList)
elif self.optimizationMeasure == VIZRANK:
for (val, [a1, a2]) in self.projections:
attrInfo.append((val, a1, a2))
# check if all attributes in loaded projection file are actually present in this data set
attrs = [attr.name for attr in self.parallelWidget.data.domain.attributes]
for (v, a1, a2) in attrInfo:
if a1 not in attrs:
print "attribute " + a1 + " was not found in the data set. You probably loaded wrong file with VizRank projections."
return
if a2 not in attrs:
print "attribute " + a2 + " was not found in the data set. You probably loaded wrong file with VizRank projections."
return
if len(attrInfo) == 0:
print "len(attrInfo) == 0. No attribute pairs. Unable to optimize."; return
self.worstVal = -1
self.canOptimize = 1
self.startOptimizationButton.hide()
self.stopOptimizationButton.show()
#qApp.processEvents() # allow processing of other events
if self.orderAllAttributes:
orngVisFuncts.optimizeAttributeOrder(attrInfo, len(self.parallelWidget.data.domain.attributes), self, qApp)
else:
orngVisFuncts.optimizeAttributeOrder(attrInfo, self.numberOfAttributes, self, qApp)
self.stopOptimizationButton.hide()
self.startOptimizationButton.show()
self.progressBarFinished()