35 , mLastRectangleValid( false )
36 , mBandsChanged( false )
44 connect( mUserDefinedRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mUserDefinedRadioButton_toggled );
45 connect( mMinMaxRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mMinMaxRadioButton_toggled );
46 connect( mStdDevRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mStdDevRadioButton_toggled );
47 connect( mCumulativeCutRadioButton, &QRadioButton::toggled,
this, &QgsRasterMinMaxWidget::mCumulativeCutRadioButton_toggled );
48 connect( mStatisticsExtentCombo,
static_cast<void ( QComboBox::* )(
int )
>( &QComboBox::currentIndexChanged ),
this, &QgsRasterMinMaxWidget::mStatisticsExtentCombo_currentIndexChanged );
49 connect( mCumulativeCutLowerDoubleSpinBox,
static_cast < void ( QDoubleSpinBox::* )(
double )
> ( &QDoubleSpinBox::valueChanged ),
this, &QgsRasterMinMaxWidget::mCumulativeCutLowerDoubleSpinBox_valueChanged );
50 connect( mCumulativeCutUpperDoubleSpinBox,
static_cast < void ( QDoubleSpinBox::* )(
double )
> ( &QDoubleSpinBox::valueChanged ),
this, &QgsRasterMinMaxWidget::mCumulativeCutUpperDoubleSpinBox_valueChanged );
51 connect( mStdDevSpinBox,
static_cast < void ( QDoubleSpinBox::* )(
double )
> ( &QDoubleSpinBox::valueChanged ),
this, &QgsRasterMinMaxWidget::mStdDevSpinBox_valueChanged );
52 connect( cboAccuracy,
static_cast<void ( QComboBox::* )(
int )
>( &QComboBox::currentIndexChanged ),
this, &QgsRasterMinMaxWidget::cboAccuracy_currentIndexChanged );
70 mBandsChanged = bands != mBands;
76 const int nExtentIdx = mStatisticsExtentCombo->currentIndex();
80 if ( mLayer && mCanvas )
90 mUserDefinedRadioButton->setChecked(
true );
94void QgsRasterMinMaxWidget::mUserDefinedRadioButton_toggled(
bool toggled )
96 mStatisticsExtentCombo->setEnabled( !toggled );
97 cboAccuracy->setEnabled( !toggled );
106 mUserDefinedRadioButton->setChecked(
true );
110 mMinMaxRadioButton->setChecked(
true );
114 mStdDevRadioButton->setChecked(
true );
118 mCumulativeCutRadioButton->setChecked(
true );
148 if ( mMinMaxRadioButton->isChecked() )
150 else if ( mStdDevRadioButton->isChecked() )
152 else if ( mCumulativeCutRadioButton->isChecked() )
157 switch ( mStatisticsExtentCombo->currentIndex() )
171 if ( cboAccuracy->currentIndex() == 0 )
177 mCumulativeCutLowerDoubleSpinBox->value() / 100.0 );
179 mCumulativeCutUpperDoubleSpinBox->value() / 100.0 );
195 if ( mLastRectangleValid && mLastRectangle == myExtent &&
196 mLastMinMaxOrigin == newMinMaxOrigin &&
199 QgsDebugMsgLevel( QStringLiteral(
"Does not need to redo statistics computations" ), 2 );
203 mLastRectangleValid =
true;
204 mLastRectangle = myExtent;
205 mLastMinMaxOrigin = newMinMaxOrigin;
206 mBandsChanged =
false;
208 for (
const int myBand : std::as_const( mBands ) )
215 double myMin = std::numeric_limits<double>::quiet_NaN();
216 double myMax = std::numeric_limits<double>::quiet_NaN();
218 bool updateMinMax =
false;
219 if ( mCumulativeCutRadioButton->isChecked() )
222 const double myLower = mCumulativeCutLowerDoubleSpinBox->value() / 100.0;
223 const double myUpper = mCumulativeCutUpperDoubleSpinBox->value() / 100.0;
226 else if ( mMinMaxRadioButton->isChecked() )
234 else if ( mStdDevRadioButton->isChecked() )
238 const double myStdDev = mStdDevSpinBox->value();
239 myMin = myRasterBandStats.
mean - ( myStdDev * myRasterBandStats.
stdDev );
240 myMax = myRasterBandStats.
mean + ( myStdDev * myRasterBandStats.
stdDev );
244 emit
load( myBand, myMin, myMax );
@ StdDev
Standard deviation.
@ MaximumValue
Reset value to maximum()
Map canvas is a class for displaying all GIS data types on a canvas.
const QgsMapSettings & mapSettings() const
Gets access to properties used for map rendering.
QgsRectangle extent() const
Returns the current zoom extent of the map canvas.
QgsRectangle outputExtentToLayerExtent(const QgsMapLayer *layer, QgsRectangle extent) const
transform bounding box from output CRS to layer's CRS
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 stdDev
The standard deviation of the cell values.
double minimumValue
The minimum cell value in the raster band.
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.
Q_DECL_DEPRECATED QgsRasterBandStats bandStatistics(int bandNo, int stats, const QgsRectangle &extent=QgsRectangle(), int sampleSize=0, QgsRasterBlockFeedback *feedback=nullptr)
Returns the band statistics.
virtual int bandCount() const =0
Gets number of bands.
Represents a raster layer.
QgsRasterDataProvider * dataProvider() override
Returns the source data provider.
This class describes the origin of min/max values.
void setExtent(QgsRasterMinMaxOrigin::Extent extent)
Sets the extent.
QgsRasterMinMaxOrigin::StatAccuracy statAccuracy() const
Returns the raster statistic accuracy.
double cumulativeCutLower() const
Returns the lower bound of cumulative cut method (between 0 and 1).
@ Estimated
Approximated statistics.
QgsRasterMinMaxOrigin::Limits limits() const
Returns the raster limits.
double stdDevFactor() const
Returns the factor f so that the min/max range is [ mean - f * stddev , mean + f * stddev ].
void setLimits(QgsRasterMinMaxOrigin::Limits limits)
Sets the limits.
void setStatAccuracy(QgsRasterMinMaxOrigin::StatAccuracy accuracy)
Sets the statistics accuracy.
@ UpdatedCanvas
Constantly updated extent of the canvas is used to compute statistics.
@ CurrentCanvas
Current extent of the canvas (at the time of computation) is used to compute statistics.
@ WholeRaster
Whole raster is used to compute statistics.
void setCumulativeCutUpper(double val)
Sets the upper bound of cumulative cut method (between 0 and 1).
void setStdDevFactor(double val)
Sets the factor f so that the min/max range is [ mean - f * stddev , mean + f * stddev ].
double cumulativeCutUpper() const
Returns the upper bound of cumulative cut method (between 0 and 1).
void setCumulativeCutLower(double val)
Sets the lower bound of cumulative cut method (between 0 and 1).
@ StdDev
Range is [ mean - stdDevFactor() * stddev, mean + stdDevFactor() * stddev ].
@ MinMax
Real min-max values.
@ CumulativeCut
Range is [ min + cumulativeCutLower() * (max - min), min + cumulativeCutUpper() * (max - min) ].
QgsRasterMinMaxOrigin::Extent extent() const
Returns the raster extent.
A rectangle specified with double values.
#define QgsDebugMsgLevel(str, level)