diagtest.py
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from PyQt4.QtCore import * |
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from PyQt4.QtGui import * |
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from qgis.core import * |
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l = qgis.utils.iface.activeLayer() |
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#print l.diagramRenderer().rendererName()
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#line numbers in comments refer to
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# https://github.com/qgis/Quantum-GIS/blob/master/src/app/qgsdiagramproperties.cpp
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diagram = QgsPieDiagram() #500
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ds = QgsDiagramSettings() #507
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ds.font = QFont( "Helvetica", 12 ) #508 |
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ds.transparency = 0 #509 - not transparent... |
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#dColors = dict() #511 - keys are the field numbers, values are the QColors
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#categoryAttributes = dict() #512 - field numbers of fields
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dColors = {4:QColor("cyan"), 5:QColor("darkCyan"), 6:QColor("red"), 7:QColor("magenta"), 8:QColor("darkYellow"), 9:QColor("blue"), 10:QColor("darkGreen"), 11:QColor("darkRed"), 12:QColor("green"), 13:QColor("darkBlue"), 14:QColor("grey"), 15:QColor("darkMagenta")} #or QColor(20,60,106)
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ds.categoryColors = dColors.values() #520
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ds.categoryIndices = dColors.keys() #521
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ds.size = QSizeF(100.0, 100.0) #522 |
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ds.sizeType = 0 #523 - mm(0), map units (1) |
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ds.labelPlacementMethod = 1 #524 - magic - from an existing example... |
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ds.scaleByArea = False #525 |
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ds.minimumSize = 0 #533 |
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ds.BackgroundColor = QColor(255,255,255,0) #Transparent White #536 |
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ds.PenColor = QColor("black") #537 |
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ds.penWidth = 0 #538 |
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ds.minScaleDenominator = -1; #546 |
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ds.maxScaleDenominator = -1; #547 |
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#ds.diagramOrientation = 2 #551 - May only be required for histograms
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#ds.barWidth = 5.0 #553
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#We want a linear size interpolated version, so that Total_BA = 0 means they disappear
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#564-572
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dr = QgsLinearlyInterpolatedDiagramRenderer() |
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dr.setLowerValue( 0.0 )
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dr.setLowerSize( QSizeF( 0.0, 0.0 ) ) |
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dr.setUpperValue( 50 )
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dr.setUpperSize( QSizeF(100,100) ) |
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dr.setClassificationAttribute( 16 )
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dr.setDiagram( diagram ) |
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dr.setDiagramSettings( ds ) |
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#And now finally put it into the layer... :-)
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l.setDiagramRenderer( dr ) #572
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dls = QgsDiagramLayerSettings() #575
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dls.dist = 0
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dls.priority = 0
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dls.xPosColumn = -1 #585 |
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dls.yPosColumn = -1
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dls.placement = 0 #588 |
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l.setDiagramLayerSettings( dls ) #593
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#Refresh map
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qgis.utils.iface.mapCanvas().refresh() |
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#Refresh map
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if hasattr(l, "setCacheImage"): |
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l.setCacheImage(None)
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l.triggerRepaint() |