19 #include <QMessageBox> 35 , mLastRectangleValid( false )
36 , mBandsChanged( false )
40 connect( mUserDefinedRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mUserDefinedRadioButton_toggled );
41 connect( mMinMaxRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mMinMaxRadioButton_toggled );
42 connect( mStdDevRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mStdDevRadioButton_toggled );
43 connect( mCumulativeCutRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mCumulativeCutRadioButton_toggled );
44 connect( mStatisticsExtentCombo,
static_cast<void ( QComboBox::* )(
int )
>( &QComboBox::currentIndexChanged ),
this, &QgsRasterMinMaxWidget::mStatisticsExtentCombo_currentIndexChanged );
45 connect( mCumulativeCutLowerDoubleSpinBox, static_cast <
void ( QDoubleSpinBox::* )(
double ) > ( &QDoubleSpinBox::valueChanged ),
this, &QgsRasterMinMaxWidget::mCumulativeCutLowerDoubleSpinBox_valueChanged );
46 connect( mCumulativeCutUpperDoubleSpinBox, static_cast <
void ( QDoubleSpinBox::* )(
double ) > ( &QDoubleSpinBox::valueChanged ),
this, &QgsRasterMinMaxWidget::mCumulativeCutUpperDoubleSpinBox_valueChanged );
47 connect( mStdDevSpinBox, static_cast <
void ( QDoubleSpinBox::* )(
double ) > ( &QDoubleSpinBox::valueChanged ),
this, &QgsRasterMinMaxWidget::mStdDevSpinBox_valueChanged );
48 connect( cboAccuracy,
static_cast<void ( QComboBox::* )(
int )
>( &QComboBox::currentIndexChanged ),
this, &QgsRasterMinMaxWidget::cboAccuracy_currentIndexChanged );
66 mBandsChanged = bands != mBands;
72 const int nExtentIdx = mStatisticsExtentCombo->currentIndex();
76 if ( mLayer && mCanvas )
86 mUserDefinedRadioButton->setChecked(
true );
90 void QgsRasterMinMaxWidget::mUserDefinedRadioButton_toggled(
bool toggled )
92 mStatisticsExtentCombo->setEnabled( !toggled );
93 cboAccuracy->setEnabled( !toggled );
99 switch ( minMaxOrigin.
limits() )
103 mUserDefinedRadioButton->setChecked(
true );
107 mMinMaxRadioButton->setChecked(
true );
111 mStdDevRadioButton->setChecked(
true );
115 mCumulativeCutRadioButton->setChecked(
true );
119 switch ( minMaxOrigin.
extent() )
135 mCumulativeCutLowerDoubleSpinBox->setValue( 100.0 * minMaxOrigin.
cumulativeCutLower() );
136 mCumulativeCutUpperDoubleSpinBox->setValue( 100.0 * minMaxOrigin.
cumulativeCutUpper() );
137 mStdDevSpinBox->setValue( minMaxOrigin.
stdDevFactor() );
146 if ( mMinMaxRadioButton->isChecked() )
148 else if ( mStdDevRadioButton->isChecked() )
150 else if ( mCumulativeCutRadioButton->isChecked() )
155 switch ( mStatisticsExtentCombo->currentIndex() )
169 if ( cboAccuracy->currentIndex() == 0 )
175 mCumulativeCutLowerDoubleSpinBox->value() / 100.0 );
177 mCumulativeCutUpperDoubleSpinBox->value() / 100.0 );
191 if ( mLastRectangleValid && mLastRectangle == myExtent &&
192 mLastMinMaxOrigin == newMinMaxOrigin &&
195 QgsDebugMsg(
"Does not need to redo statistics computations" );
199 mLastRectangleValid =
true;
200 mLastRectangle = myExtent;
201 mLastMinMaxOrigin = newMinMaxOrigin;
202 mBandsChanged =
false;
204 Q_FOREACH (
int myBand, mBands )
206 QgsDebugMsg( QString(
"myBand = %1" ).arg( myBand ) );
211 double myMin = std::numeric_limits<double>::quiet_NaN();
212 double myMax = std::numeric_limits<double>::quiet_NaN();
214 bool updateMinMax =
false;
215 if ( mCumulativeCutRadioButton->isChecked() )
218 double myLower = mCumulativeCutLowerDoubleSpinBox->value() / 100.0;
219 double myUpper = mCumulativeCutUpperDoubleSpinBox->value() / 100.0;
222 else if ( mMinMaxRadioButton->isChecked() )
230 else if ( mStdDevRadioButton->isChecked() )
234 double myStdDev = mStdDevSpinBox->value();
235 myMin = myRasterBandStats.
mean - ( myStdDev * myRasterBandStats.
stdDev );
236 myMax = myRasterBandStats.
mean + ( myStdDev * myRasterBandStats.
stdDev );
240 emit
load( myBand, myMin, myMax );
QgsRasterMinMaxOrigin::Limits limits() const
Return limits.
virtual int bandCount() const =0
Get number of bands.
QgsRasterMinMaxOrigin::Extent extent() const
Return extent.
A rectangle specified with double values.
This class provides qgis with the ability to render raster datasets onto the mapcanvas.
QgsRectangle outputExtentToLayerExtent(const QgsMapLayer *layer, QgsRectangle extent) const
transform bounding box from output CRS to layer's CRS
double maximumValue
The maximum cell value in the raster band.
virtual void cumulativeCut(int bandNo, double lowerCount, double upperCount, double &lowerValue, double &upperValue, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0)
Find values for cumulative pixel count cut.
Map canvas is a class for displaying all GIS data types on a canvas.
Current extent of the canvas (at the time of computation) is used to compute statistics.
void setExtent(QgsRasterMinMaxOrigin::Extent extent)
Set extent.
double cumulativeCutLower() const
Return lower bound of cumulative cut method (between 0 and 1).
double stdDev
The standard deviation of the cell values.
QgsRasterDataProvider * dataProvider() override
This class describes the origin of min/max values.
The RasterBandStats struct is a container for statistics about a single raster band.
double mean
The mean cell value for the band. NO_DATA values are excluded.
double cumulativeCutUpper() const
Return upper bound of cumulative cut method (between 0 and 1).
QgsRectangle extent() const
Returns the current zoom extent of the map canvas.
Constantly updated extent of the canvas is used to compute statistics.
Range is [ mean - stdDevFactor() * stddev, mean + stdDevFactor() * stddev ].
void setStdDevFactor(double val)
Set factor f so that the min/max range is [ mean - f * stddev , mean + f * stddev ]...
Range is [ min + cumulativeCutLower() * (max - min), min + cumulativeCutUpper() * (max - min) ]...
void setCumulativeCutLower(double val)
Set lower bound of cumulative cut method (between 0 and 1).
void setLimits(QgsRasterMinMaxOrigin::Limits limits)
Set limits.
const QgsMapSettings & mapSettings() const
Get access to properties used for map rendering.
virtual QgsRasterBandStats bandStatistics(int bandNo, int stats=QgsRasterBandStats::All, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, QgsRasterBlockFeedback *feedback=nullptr)
Get band statistics.
void setStatAccuracy(QgsRasterMinMaxOrigin::StatAccuracy accuracy)
Set statistics accuracy.
Whole raster is used to compute statistics.
double minimumValue
The minimum cell value in the raster band.
QgsRasterMinMaxOrigin::StatAccuracy statAccuracy() const
Return statistic accuracy.
void setCumulativeCutUpper(double val)
Set upper bound of cumulative cut method (between 0 and 1).
double stdDevFactor() const
Return factor f so that the min/max range is [ mean - f * stddev , mean + f * stddev ]...