bool Receiver::receiveData() {
waitForBeginMessage();
rType = getMessageType();
bool endFlag= 0;
if(strchr(validMessageTypes, rType) == NULL) {
return false;
}
Serial.print(" Received valid type message ");
Serial.print(rType);
rCount = getMessageLength();
Serial.print (" message length is ") ;
Serial.println(rCount);
if(rCount < 0 || rCount > maxRL) {
return false;
}
endFlag = getDataValues();
return endFlag;
}
void QgsGraduatedSymbolRendererV2::updateClasses( QgsVectorLayer *vlayer, Mode mode, int nclasses )
{
if ( mAttrName.isEmpty() )
return;
setMode( mode );
// Custom classes are not recalculated
if ( mode == Custom )
return;
if ( nclasses < 1 )
nclasses = 1;
QList<double> values;
bool valuesLoaded = false;
double minimum;
double maximum;
int attrNum = vlayer->fieldNameIndex( mAttrName );
if ( attrNum == -1 )
{
values = getDataValues( vlayer );
if ( values.isEmpty() )
return;
qSort( values );
minimum = values.first();
maximum = values.last();
valuesLoaded = true;
}
else
{
minimum = vlayer->minimumValue( attrNum ).toDouble();
maximum = vlayer->maximumValue( attrNum ).toDouble();
}
QgsDebugMsg( QString( "min %1 // max %2" ).arg( minimum ).arg( maximum ) );
QList<double> breaks;
QList<double> labels;
if ( mode == EqualInterval )
{
breaks = _calcEqualIntervalBreaks( minimum, maximum, nclasses );
}
else if ( mode == Pretty )
{
breaks = _calcPrettyBreaks( minimum, maximum, nclasses );
}
else if ( mode == Quantile || mode == Jenks || mode == StdDev )
{
// get values from layer
if ( !valuesLoaded )
{
values = getDataValues( vlayer );
}
// calculate the breaks
if ( mode == Quantile )
{
breaks = _calcQuantileBreaks( values, nclasses );
}
else if ( mode == Jenks )
{
breaks = _calcJenksBreaks( values, nclasses, minimum, maximum );
}
else if ( mode == StdDev )
{
breaks = _calcStdDevBreaks( values, nclasses, labels );
}
}
else
{
Q_ASSERT( false );
}
double lower, upper = minimum;
QString label;
deleteAllClasses();
// "breaks" list contains all values at class breaks plus maximum as last break
int i = 0;
for ( QList<double>::iterator it = breaks.begin(); it != breaks.end(); ++it, ++i )
{
lower = upper; // upper border from last interval
upper = *it;
// Label - either StdDev label or default label for a range
if ( mode == StdDev )
{
if ( i == 0 )
{
label = "< " + QString::number( labels[i], 'f', 2 ) + " Std Dev";
}
else if ( i == labels.count() - 1 )
{
label = ">= " + QString::number( labels[i-1], 'f', 2 ) + " Std Dev";
}
else
{
label = QString::number( labels[i-1], 'f', 2 ) + " Std Dev" + " - " + QString::number( labels[i], 'f', 2 ) + " Std Dev";
}
}
else
{
label = mLabelFormat.labelForRange( lower, upper );
}
QgsSymbolV2* newSymbol = mSourceSymbol ? mSourceSymbol->clone() : QgsSymbolV2::defaultSymbol( vlayer->geometryType() );
addClass( QgsRendererRangeV2( lower, upper, newSymbol, label ) );
}
updateColorRamp( 0, mInvertedColorRamp );
}
