.TH "QwtPolarGrid" 3 "Sun Jul 18 2021" "Version 6.2.0" "Qwt User's Guide" \" -*- nroff -*- .ad l .nh .SH NAME QwtPolarGrid \- An item which draws scales and grid lines on a polar plot\&. .SH SYNOPSIS .br .PP .PP \fC#include \fP .PP Inherits \fBQwtPolarItem\fP\&. .SS "Public Types" .in +1c .ti -1c .RI "enum \fBDisplayFlag\fP { \fBSmartOriginLabel\fP = 1, \fBHideMaxRadiusLabel\fP = 2, \fBClipAxisBackground\fP = 4, \fBSmartScaleDraw\fP = 8, \fBClipGridLines\fP = 16 }" .br .ti -1c .RI "enum \fBGridAttribute\fP { \fBAutoScaling\fP = 0x01 }" .br .RI "Grid attributes\&. " .ti -1c .RI "typedef QFlags< \fBDisplayFlag\fP > \fBDisplayFlags\fP" .br .ti -1c .RI "typedef QFlags< \fBGridAttribute\fP > \fBGridAttributes\fP" .br .in -1c .SS "Public Member Functions" .in +1c .ti -1c .RI "\fBQwtPolarGrid\fP ()" .br .RI "Constructor\&. " .ti -1c .RI "virtual \fB~QwtPolarGrid\fP ()" .br .RI "Destructor\&. " .ti -1c .RI "virtual int \fBrtti\fP () const override" .br .ti -1c .RI "void \fBsetDisplayFlag\fP (\fBDisplayFlag\fP, bool on=true)" .br .ti -1c .RI "bool \fBtestDisplayFlag\fP (\fBDisplayFlag\fP) const" .br .ti -1c .RI "void \fBsetGridAttribute\fP (\fBGridAttribute\fP, bool on=true)" .br .RI "Specify an attribute for the grid\&. " .ti -1c .RI "bool \fBtestGridAttribute\fP (\fBGridAttribute\fP) const" .br .ti -1c .RI "void \fBshowGrid\fP (int scaleId, bool \fBshow\fP=true)" .br .ti -1c .RI "bool \fBisGridVisible\fP (int scaleId) const" .br .ti -1c .RI "void \fBshowMinorGrid\fP (int scaleId, bool \fBshow\fP=true)" .br .ti -1c .RI "bool \fBisMinorGridVisible\fP (int scaleId) const" .br .ti -1c .RI "void \fBshowAxis\fP (int axisId, bool \fBshow\fP=true)" .br .ti -1c .RI "bool \fBisAxisVisible\fP (int axisId) const" .br .ti -1c .RI "void \fBsetPen\fP (const QPen &p)" .br .ti -1c .RI "void \fBsetFont\fP (const QFont &)" .br .ti -1c .RI "void \fBsetMajorGridPen\fP (const QPen &p)" .br .ti -1c .RI "void \fBsetMajorGridPen\fP (int scaleId, const QPen &p)" .br .ti -1c .RI "QPen \fBmajorGridPen\fP (int scaleId) const" .br .ti -1c .RI "void \fBsetMinorGridPen\fP (const QPen &p)" .br .ti -1c .RI "void \fBsetMinorGridPen\fP (int scaleId, const QPen &p)" .br .ti -1c .RI "QPen \fBminorGridPen\fP (int scaleId) const" .br .ti -1c .RI "void \fBsetAxisPen\fP (int axisId, const QPen &p)" .br .ti -1c .RI "QPen \fBaxisPen\fP (int axisId) const" .br .ti -1c .RI "void \fBsetAxisFont\fP (int axisId, const QFont &p)" .br .ti -1c .RI "QFont \fBaxisFont\fP (int axisId) const" .br .ti -1c .RI "void \fBsetScaleDraw\fP (int axisId, \fBQwtScaleDraw\fP *)" .br .RI "Set a scale draw\&. " .ti -1c .RI "const \fBQwtScaleDraw\fP * \fBscaleDraw\fP (int axisId) const" .br .ti -1c .RI "\fBQwtScaleDraw\fP * \fBscaleDraw\fP (int axisId)" .br .ti -1c .RI "void \fBsetAzimuthScaleDraw\fP (\fBQwtRoundScaleDraw\fP *)" .br .RI "Set a scale draw for the azimuth scale\&. " .ti -1c .RI "const \fBQwtRoundScaleDraw\fP * \fBazimuthScaleDraw\fP () const" .br .ti -1c .RI "\fBQwtRoundScaleDraw\fP * \fBazimuthScaleDraw\fP ()" .br .ti -1c .RI "virtual void \fBdraw\fP (QPainter *p, const \fBQwtScaleMap\fP &azimuthMap, const \fBQwtScaleMap\fP &radialMap, const QPointF &pole, double radius, const QRectF &rect) const override" .br .ti -1c .RI "virtual void \fBupdateScaleDiv\fP (const \fBQwtScaleDiv\fP &azimuthMap, const \fBQwtScaleDiv\fP &radialMap, const \fBQwtInterval\fP &) override" .br .RI "Update the item to changes of the axes scale division\&. " .ti -1c .RI "virtual int \fBmarginHint\fP () const override" .br .in -1c .SS "Protected Member Functions" .in +1c .ti -1c .RI "void \fBdrawRays\fP (QPainter *, const QRectF &, const QPointF &pole, double radius, const \fBQwtScaleMap\fP &azimuthMap, const \fBQList\fP< double > &) const" .br .ti -1c .RI "void \fBdrawCircles\fP (QPainter *, const QRectF &, const QPointF &pole, const \fBQwtScaleMap\fP &radialMap, const \fBQList\fP< double > &) const" .br .ti -1c .RI "void \fBdrawAxis\fP (QPainter *, int axisId) const" .br .in -1c .SH "Detailed Description" .PP An item which draws scales and grid lines on a polar plot\&. The \fBQwtPolarGrid\fP class can be used to draw a coordinate grid\&. A coordinate grid consists of major and minor gridlines\&. The locations of the gridlines are determined by the azimuth and radial scale divisions\&. .PP \fBQwtPolarGrid\fP is also responsible for drawing the axis representing the scales\&. It is possible to display 4 radial and one azimuth axis\&. .PP Whenever the scale divisions of the plot widget changes the grid is synchronized by \fBupdateScaleDiv()\fP\&. .PP \fBSee also\fP .RS 4 \fBQwtPolarPlot\fP, QwtPolar::Axis .RE .PP .PP Definition at line 41 of file qwt_polar_grid\&.h\&. .SH "Member Typedef Documentation" .PP .SS "typedef QFlags<\fBDisplayFlag\fP > \fBQwtPolarGrid::DisplayFlags\fP" An ORed combination of \fBDisplayFlag\fP values\&. .PP Definition at line 88 of file qwt_polar_grid\&.h\&. .SS "typedef QFlags<\fBGridAttribute\fP > \fBQwtPolarGrid::GridAttributes\fP" An ORed combination of \fBGridAttribute\fP values\&. .PP Definition at line 103 of file qwt_polar_grid\&.h\&. .SH "Member Enumeration Documentation" .PP .SS "enum \fBQwtPolarGrid::DisplayFlag\fP" Mysterious flags trying to avoid conflicts, when painting the scales and grid lines\&. .PP The default setting enables all flags\&. .PP \fBSee also\fP .RS 4 \fBsetDisplayFlag()\fP, \fBtestDisplayFlag()\fP .RE .PP .PP \fBEnumerator\fP .in +1c .TP \fB\fISmartOriginLabel \fP\fP Try to avoid situations, where the label of the origin is painted over another axis\&. .TP \fB\fIHideMaxRadiusLabel \fP\fP Often the outermost tick of the radial scale is close to the canvas border\&. With HideMaxRadiusLabel enabled it is not painted\&. .TP \fB\fIClipAxisBackground \fP\fP The tick labels of the radial scales might be hard to read, when they are painted on top of the radial grid lines ( or on top of a curve/spectrogram )\&. When ClipAxisBackground the bounding rect of each label is added to the clip region\&. .TP \fB\fISmartScaleDraw \fP\fP Don't paint the backbone of the radial axes, when they are very close to a line of the azimuth grid\&. .TP \fB\fIClipGridLines \fP\fP All grid lines are clipped against the plot area before being painted\&. When the plot is zoomed in this will have an significant impact on the performance of the painting code\&. .PP Definition at line 52 of file qwt_polar_grid\&.h\&. .SS "enum \fBQwtPolarGrid::GridAttribute\fP" .PP Grid attributes\&. .PP \fBSee also\fP .RS 4 setGridAttributes(), testGridAttributes() .RE .PP .PP \fBEnumerator\fP .in +1c .TP \fB\fIAutoScaling \fP\fP When AutoScaling is enabled, the radial axes will be adjusted to the interval, that is currently visible on the canvas plot\&. .PP Definition at line 94 of file qwt_polar_grid\&.h\&. .SH "Constructor & Destructor Documentation" .PP .SS "QwtPolarGrid::QwtPolarGrid ()\fC [explicit]\fP" .PP Constructor\&. Enables major and disables minor grid lines\&. The azimuth and right radial axis are visible\&. all other axes are hidden\&. Autoscaling is enabled\&. .PP Definition at line 84 of file qwt_polar_grid\&.cpp\&. .SH "Member Function Documentation" .PP .SS "QFont QwtPolarGrid::axisFont (int axisId) const" .PP \fBReturns\fP .RS 4 Font for the tick labels of a specific axis .RE .PP \fBParameters\fP .RS 4 \fIaxisId\fP Axis id (QwtPolar::Axis) .RE .PP .PP Definition at line 556 of file qwt_polar_grid\&.cpp\&. .SS "QPen QwtPolarGrid::axisPen (int axisId) const" .PP \fBReturns\fP .RS 4 Pen for painting a specific axis .RE .PP \fBParameters\fP .RS 4 \fIaxisId\fP Axis id (QwtPolar::Axis) .RE .PP \fBSee also\fP .RS 4 \fBsetAxisPen()\fP .RE .PP .PP Definition at line 525 of file qwt_polar_grid\&.cpp\&. .SS "\fBQwtRoundScaleDraw\fP * QwtPolarGrid::azimuthScaleDraw ()" .PP \fBReturns\fP .RS 4 Scale draw for the azimuth scale .RE .PP \fBSee also\fP .RS 4 \fBsetAzimuthScaleDraw()\fP, \fBscaleDraw()\fP .RE .PP .PP Definition at line 1127 of file qwt_polar_grid\&.cpp\&. .SS "const \fBQwtRoundScaleDraw\fP * QwtPolarGrid::azimuthScaleDraw () const" .PP \fBReturns\fP .RS 4 Scale draw for the azimuth scale .RE .PP \fBSee also\fP .RS 4 \fBsetAzimuthScaleDraw()\fP, \fBscaleDraw()\fP .RE .PP .PP Definition at line 1117 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::draw (QPainter * painter, const \fBQwtScaleMap\fP & azimuthMap, const \fBQwtScaleMap\fP & radialMap, const QPointF & pole, double radius, const QRectF & canvasRect) const\fC [override]\fP, \fC [virtual]\fP" Draw the grid and axes .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI .br \fIradialMap\fP Maps radius values into painter coordinates\&. .br \fIpole\fP Position of the pole in painter coordinates .br \fIradius\fP Radius of the complete plot area in painter coordinates .br \fIcanvasRect\fP Contents rect of the canvas in painter coordinates .RE .PP .PP Implements \fBQwtPolarItem\fP\&. .PP Definition at line 574 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::drawAxis (QPainter * painter, int axisId) const\fC [protected]\fP" Paint an axis .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIaxisId\fP Axis id (QwtPolar::Axis) .RE .PP .PP Definition at line 832 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::drawCircles (QPainter * painter, const QRectF & canvasRect, const QPointF & pole, const \fBQwtScaleMap\fP & radialMap, const \fBQList\fP< double > & values) const\fC [protected]\fP" Draw circles .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIcanvasRect\fP Contents rect of the canvas in painter coordinates .br \fIpole\fP Position of the pole in painter coordinates .br \fIradialMap\fP Maps radius values into painter coordinates\&. .br \fIvalues\fP Radial values, indicating the distances from the pole .RE .PP .PP Definition at line 751 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::drawRays (QPainter * painter, const QRectF & canvasRect, const QPointF & pole, double radius, const \fBQwtScaleMap\fP & azimuthMap, const \fBQList\fP< double > & values) const\fC [protected]\fP" Draw lines from the pole .PP \fBParameters\fP .RS 4 \fIpainter\fP Painter .br \fIcanvasRect\fP Contents rect of the canvas in painter coordinates .br \fIpole\fP Position of the pole in painter coordinates .br \fIradius\fP Length of the lines in painter coordinates .br \fIazimuthMap\fP Maps azimuth values to values related to 0\&.0, M_2PI .br \fIvalues\fP Azimuth values, indicating the direction of the lines .RE .PP .PP Definition at line 681 of file qwt_polar_grid\&.cpp\&. .SS "bool QwtPolarGrid::isAxisVisible (int axisId) const" .PP \fBReturns\fP .RS 4 true if the axis is visible .RE .PP \fBParameters\fP .RS 4 \fIaxisId\fP Axis id (QwtPolar::Axis) .RE .PP \fBSee also\fP .RS 4 \fBshowAxis()\fP .RE .PP .PP Definition at line 343 of file qwt_polar_grid\&.cpp\&. .SS "bool QwtPolarGrid::isGridVisible (int scaleId) const" .PP \fBReturns\fP .RS 4 true if grid lines are enabled .RE .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .RE .PP \fBSee also\fP .RS 4 QwtPolar::Scale, \fBshowGrid()\fP .RE .PP .PP Definition at line 272 of file qwt_polar_grid\&.cpp\&. .SS "bool QwtPolarGrid::isMinorGridVisible (int scaleId) const" .PP \fBReturns\fP .RS 4 true if minor grid lines are enabled .RE .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .RE .PP \fBSee also\fP .RS 4 \fBshowMinorGrid()\fP .RE .PP .PP Definition at line 308 of file qwt_polar_grid\&.cpp\&. .SS "QPen QwtPolarGrid::majorGridPen (int scaleId) const" .PP \fBReturns\fP .RS 4 Pen for painting the major grid lines of a specific scale .RE .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .RE .PP \fBSee also\fP .RS 4 \fBsetMajorGridPen()\fP, \fBminorGridPen()\fP .RE .PP .PP Definition at line 454 of file qwt_polar_grid\&.cpp\&. .SS "int QwtPolarGrid::marginHint () const\fC [override]\fP, \fC [virtual]\fP" .PP \fBReturns\fP .RS 4 Number of pixels, that are necessary to paint the azimuth scale .RE .PP \fBSee also\fP .RS 4 \fBQwtRoundScaleDraw::extent()\fP .RE .PP .PP Reimplemented from \fBQwtPolarItem\fP\&. .PP Definition at line 1049 of file qwt_polar_grid\&.cpp\&. .SS "QPen QwtPolarGrid::minorGridPen (int scaleId) const" .PP \fBReturns\fP .RS 4 Pen for painting the minor grid lines of a specific scale .RE .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .RE .PP .PP Definition at line 510 of file qwt_polar_grid\&.cpp\&. .SS "int QwtPolarGrid::rtti () const\fC [override]\fP, \fC [virtual]\fP" .PP \fBReturns\fP .RS 4 QwtPlotItem::Rtti_PolarGrid .RE .PP .PP Reimplemented from \fBQwtPolarItem\fP\&. .PP Definition at line 163 of file qwt_polar_grid\&.cpp\&. .SS "\fBQwtScaleDraw\fP * QwtPolarGrid::scaleDraw (int axisId)" Returns the scale draw of a specified axis .PP \fBParameters\fP .RS 4 \fIaxisId\fP axis index ( QwtPolar::AxisLeft <= axisId <= QwtPolar::AxisBottom) .RE .PP \fBReturns\fP .RS 4 specified scaleDraw for axis, or NULL if axis is invalid\&. .RE .PP \fBSee also\fP .RS 4 \fBsetScaleDraw()\fP, \fBazimuthScaleDraw()\fP .RE .PP .PP Definition at line 1083 of file qwt_polar_grid\&.cpp\&. .SS "const \fBQwtScaleDraw\fP * QwtPolarGrid::scaleDraw (int axisId) const" Returns the scale draw of a specified axis .PP \fBParameters\fP .RS 4 \fIaxisId\fP axis index ( QwtPolar::AxisLeft <= axisId <= QwtPolar::AxisBottom) .RE .PP \fBReturns\fP .RS 4 specified scaleDraw for axis, or NULL if axis is invalid\&. .RE .PP \fBSee also\fP .RS 4 \fBazimuthScaleDraw()\fP .RE .PP .PP Definition at line 1068 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setAxisFont (int axisId, const QFont & font)" Assign a font for the tick labels of a specific axis .PP \fBParameters\fP .RS 4 \fIaxisId\fP Axis id (QwtPolar::Axis) .br \fIfont\fP new Font .RE .PP .PP Definition at line 539 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setAxisPen (int axisId, const QPen & pen)" Assign a pen for painting an axis .PP \fBParameters\fP .RS 4 \fIaxisId\fP Axis id (QwtPolar::Axis) .br \fIpen\fP Pen .RE .PP \fBSee also\fP .RS 4 \fBaxisPen()\fP .RE .PP .PP Definition at line 235 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setAzimuthScaleDraw (\fBQwtRoundScaleDraw\fP * scaleDraw)" .PP Set a scale draw for the azimuth scale\&. .PP \fBParameters\fP .RS 4 \fIscaleDraw\fP object responsible for drawing scales\&. .RE .PP \fBSee also\fP .RS 4 \fBazimuthScaleDraw()\fP, \fBsetScaleDraw()\fP .RE .PP .PP Definition at line 1139 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setDisplayFlag (\fBDisplayFlag\fP flag, bool on = \fCtrue\fP)" Change the display flags .PP \fBParameters\fP .RS 4 \fIflag\fP See DisplayFlag .br \fIon\fP true/false .RE .PP .PP Definition at line 174 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setFont (const QFont & font)" Assign a font for all scale tick labels .PP \fBParameters\fP .RS 4 \fIfont\fP Font .RE .PP \fBSee also\fP .RS 4 \fBsetAxisFont()\fP .RE .PP .PP Definition at line 390 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setGridAttribute (\fBGridAttribute\fP attribute, bool on = \fCtrue\fP)" .PP Specify an attribute for the grid\&. .PP \fBParameters\fP .RS 4 \fIattribute\fP Grid attribute .br \fIon\fP On/Off .RE .PP /sa GridAttribute, \fBtestGridAttribute()\fP, \fBupdateScaleDiv()\fP, \fBQwtPolarPlot::zoom()\fP, \fBQwtPolarPlot::scaleDiv()\fP .PP Definition at line 205 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setMajorGridPen (const QPen & pen)" Assign a pen for the major grid lines .PP \fBParameters\fP .RS 4 \fIpen\fP Pen .RE .PP \fBSee also\fP .RS 4 \fBsetPen()\fP, \fBsetMinorGridPen()\fP, \fBmajorGridPen\fP .RE .PP .PP Definition at line 412 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setMajorGridPen (int scaleId, const QPen & pen)" Assign a pen for the major grid lines of a specific scale .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .br \fIpen\fP Pen .RE .PP \fBSee also\fP .RS 4 \fBsetPen()\fP, \fBsetMinorGridPen()\fP, \fBmajorGridPen\fP .RE .PP .PP Definition at line 436 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setMinorGridPen (const QPen & pen)" Assign a pen for the minor grid lines .PP \fBParameters\fP .RS 4 \fIpen\fP Pen .RE .PP \fBSee also\fP .RS 4 \fBsetPen()\fP, \fBsetMajorGridPen()\fP, \fBminorGridPen()\fP .RE .PP .PP Definition at line 469 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setMinorGridPen (int scaleId, const QPen & pen)" Assign a pen for the minor grid lines of a specific scale .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .br \fIpen\fP Pen .RE .PP \fBSee also\fP .RS 4 \fBsetPen()\fP, \fBsetMajorGridPen()\fP, \fBminorGridPen\fP .RE .PP .PP Definition at line 493 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setPen (const QPen & pen)" Assign a pen for all axes and grid lines .PP \fBParameters\fP .RS 4 \fIpen\fP Pen .RE .PP \fBSee also\fP .RS 4 \fBsetMajorGridPen()\fP, \fBsetMinorGridPen()\fP, \fBsetAxisPen()\fP .RE .PP .PP Definition at line 357 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::setScaleDraw (int axisId, \fBQwtScaleDraw\fP * scaleDraw)" .PP Set a scale draw\&. .PP \fBParameters\fP .RS 4 \fIaxisId\fP axis index ( QwtPolar::AxisLeft <= axisId <= QwtPolar::AxisBottom) .br \fIscaleDraw\fP object responsible for drawing scales\&. .RE .PP \fBSee also\fP .RS 4 \fBscaleDraw()\fP, \fBsetAzimuthScaleDraw()\fP .RE .PP .PP Definition at line 1099 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::showAxis (int axisId, bool show = \fCtrue\fP)" Show/Hide an axis .PP \fBParameters\fP .RS 4 \fIaxisId\fP Axis id (QwtPolar::Axis) .br \fIshow\fP true/false .RE .PP \fBSee also\fP .RS 4 \fBisAxisVisible()\fP .RE .PP .PP Definition at line 324 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::showGrid (int scaleId, bool show = \fCtrue\fP)" Show/Hide grid lines for a scale .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .br \fIshow\fP true/false .RE .PP .PP Definition at line 254 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::showMinorGrid (int scaleId, bool show = \fCtrue\fP)" Show/Hide minor grid lines for a scale .PP To display minor grid lines\&. \fBshowGrid()\fP needs to be enabled too\&. .PP \fBParameters\fP .RS 4 \fIscaleId\fP Scale id ( QwtPolar::Scale ) .br \fIshow\fP true/false .RE .PP \fBSee also\fP .RS 4 \fBshowGrid\fP .RE .PP .PP Definition at line 290 of file qwt_polar_grid\&.cpp\&. .SS "bool QwtPolarGrid::testDisplayFlag (\fBDisplayFlag\fP flag) const" .PP \fBReturns\fP .RS 4 true, if flag is enabled .RE .PP \fBParameters\fP .RS 4 \fIflag\fP See DisplayFlag .RE .PP .PP Definition at line 191 of file qwt_polar_grid\&.cpp\&. .SS "bool QwtPolarGrid::testGridAttribute (\fBGridAttribute\fP attribute) const" .PP \fBReturns\fP .RS 4 true, if attribute is enabled .RE .PP \fBSee also\fP .RS 4 \fBGridAttribute\fP, \fBsetGridAttribute()\fP .RE .PP .PP Definition at line 222 of file qwt_polar_grid\&.cpp\&. .SS "void QwtPolarGrid::updateScaleDiv (const \fBQwtScaleDiv\fP & azimuthScaleDiv, const \fBQwtScaleDiv\fP & radialScaleDiv, const \fBQwtInterval\fP & interval)\fC [override]\fP, \fC [virtual]\fP" .PP Update the item to changes of the axes scale division\&. If AutoScaling is enabled the radial scale is calculated from the interval, otherwise the scales are adopted to the plot scales\&. .PP \fBParameters\fP .RS 4 \fIazimuthScaleDiv\fP Scale division of the azimuth-scale .br \fIradialScaleDiv\fP Scale division of the radius-axis .br \fIinterval\fP The interval of the radius-axis, that is visible on the canvas .RE .PP \fBSee also\fP .RS 4 QwtPolarPlot::setGridAttributes() .RE .PP .PP Reimplemented from \fBQwtPolarItem\fP\&. .PP Definition at line 952 of file qwt_polar_grid\&.cpp\&. .SH "Author" .PP Generated automatically by Doxygen for Qwt User's Guide from the source code\&.