How to use findItems method in fMBT

Best Python code snippet using fMBT_python

test_qgsexpressionbuilderwidget.py

Source:test_qgsexpressionbuilderwidget.py

...62        """ check through widget model to ensure it is initially populated with functions """63        w = QgsExpressionBuilderWidget()64        m = w.model()65        # check that some standard expression functions are shown66        items = m.findItems('lower', Qt.MatchRecursive)67        self.assertEqual(len(items), 1)68        items = m.findItems('upper', Qt.MatchRecursive)69        self.assertEqual(len(items), 1)70        items = m.findItems('asdasdasda#$@#$', Qt.MatchRecursive)71        self.assertEqual(len(items), 0)72    def testVariables(self):73        """ check through widget model to ensure it is populated with variables """74        w = QgsExpressionBuilderWidget()75        m = w.model()76        s = QgsExpressionContextScope()77        s.setVariable('my_var1', 'x')78        s.setVariable('my_var2', 'y')79        c = QgsExpressionContext()80        c.appendScope(s)81        # check that variables are added when setting context82        w.setExpressionContext(c)83        items = m.findItems('my_var1', Qt.MatchRecursive)84        self.assertEqual(len(items), 1)85        items = m.findItems('my_var2', Qt.MatchRecursive)86        self.assertEqual(len(items), 1)87        items = m.findItems('not_my_var', Qt.MatchRecursive)88        self.assertEqual(len(items), 0)89        # double check that functions are still only there once90        items = m.findItems('lower', Qt.MatchRecursive)91        self.assertEqual(len(items), 1)92        items = m.findItems('upper', Qt.MatchRecursive)93        self.assertEqual(len(items), 1)94    def testLayers(self):95        """ check that layers are shown in widget model"""96        p = QgsProject.instance()97        layer = QgsVectorLayer("Point", "layer1", "memory")98        layer2 = QgsVectorLayer("Point", "layer2", "memory")99        p.addMapLayers([layer, layer2])100        w = QgsExpressionBuilderWidget()101        m = w.model()102        # check that layers are shown103        items = m.findItems('layer1', Qt.MatchRecursive)104        self.assertEqual(len(items), 1)105        items = m.findItems('layer2', Qt.MatchRecursive)106        self.assertEqual(len(items), 1)107        # change project108        p2 = QgsProject()109        layer3 = QgsVectorLayer("Point", "layer3", "memory")110        p2.addMapLayers([layer3])111        w.setProject(p2)112        m = w.model()113        items = m.findItems('layer1', Qt.MatchRecursive)114        self.assertEqual(len(items), 0)115        items = m.findItems('layer2', Qt.MatchRecursive)116        self.assertEqual(len(items), 0)117        items = m.findItems('layer3', Qt.MatchRecursive)118        self.assertEqual(len(items), 1)119    def testRelations(self):120        """ check that layers are shown in widget model"""121        p = QgsProject.instance()122        # not valid, but doesn't matter for test....123        rel = QgsRelation()124        rel.setId('rel1')125        rel.setName('Relation Number One')126        rel.setReferencingLayer(self.referencingLayer.id())127        rel.setReferencedLayer(self.referencedLayer.id())128        rel.addFieldPair('foreignkey', 'y')129        rel2 = QgsRelation()130        rel2.setId('rel2')131        rel2.setName('Relation Number Two')132        rel2.setReferencingLayer(self.referencingLayer.id())133        rel2.setReferencedLayer(self.referencedLayer.id())134        rel2.addFieldPair('foreignkey', 'y')135        p.relationManager().addRelation(rel)136        p.relationManager().addRelation(rel2)137        w = QgsExpressionBuilderWidget()138        m = w.model()139        # check that relations are shown140        items = m.findItems('Relation Number One', Qt.MatchRecursive)141        self.assertEqual(len(items), 1)142        items = m.findItems('Relation Number Two', Qt.MatchRecursive)143        self.assertEqual(len(items), 1)144if __name__ == '__main__':...

metadata.py

Source:metadata.py

...11    meta = {}12    with open ( pathname ) as fd:13        doc = xmltodict.parse( fd.read() )14    # product characteristics15    meta[ 'product' ] = {   'type' : findItems( doc, 's1sarl1:productType' )[ 0 ], 16                                'class' : findItems( doc, 's1sarl1:productClass' )[ 0 ], 17                                   'satellite' : findItems( doc, 'safe:number' )[ 0 ],18                                       'mode' : findItems( doc, 's1sarl1:mode' )[ 0 ] }19    # acquisition period20    nodes = findItems( doc, 'safe:acquisitionPeriod' )21    meta[ 'acquisition' ] = { 'start' : datetime.strptime( nodes[0][ 'safe:startTime' ], '%Y-%m-%dT%H:%M:%S.%f' ),22                                'stop' : datetime.strptime( nodes[0][ 'safe:stopTime' ], '%Y-%m-%dT%H:%M:%S.%f' ) }23    # software identity24    nodes = findItems( doc, 'safe:software' )25    meta[ 'software' ] = { 'name' : nodes[ 0 ][ '@name' ], 'version' : nodes[ 0 ][ '@version' ] }26    # get orbit numbers27    nodes = findItems( doc, 'safe:orbitNumber' )28    meta[ 'orbit_number' ] = { 'start' : int ( nodes[ 0 ][ 0 ][ '#text' ] ), 'stop' : int ( nodes[ 0 ][ 1 ][ '#text' ] ) }29    # get relative orbit numbers30    nodes = findItems( doc, 'safe:relativeOrbitNumber' )31    meta[ 'relative_orbit_number' ] = { 'start' : int ( nodes[ 0 ][ 0 ][ '#text' ] ), 'stop' : int ( nodes[ 0 ][ 1 ][ '#text' ] ) }32    # get orbit direction33    meta[ 'orbit_direction' ] = findItems( doc, 's1:pass' )[ 0 ]34    # get scene coordinates35    nodes = findItems( doc, 'gml:coordinates' )36    tuples = nodes[ 0 ].split( ' ' )37    # convert to float array38    meta[ 'aoi' ] = []39    for t in tuples:40        meta[ 'aoi' ].append( [ float( i ) for i in t.split( ',' ) ] )41    # get cycle number42    nodes = findItems( doc, 'safe:cycleNumber' )43    meta[ 'cycle_number' ] = int ( nodes[ 0 ] )44    # get mission take id45    nodes = findItems( doc, 's1sarl1:missionDataTakeID' )46    meta[ 'mission_take_id' ] = int ( nodes[ 0 ] )47    # get polarization channels48    nodes = findItems( doc, 's1sarl1:transmitterReceiverPolarisation' )49    meta[ 'polarization' ] = nodes[ 0 ]50    # get slice number51    nodes = findItems( doc, 's1sarl1:sliceNumber' )52    meta[ 'slice_number' ] = int ( nodes[ 0 ] )53    # get total slices54    nodes = findItems( doc, 's1sarl1:totalSlices' )55    meta[ 'total_slices' ] = int ( nodes[ 0 ] )56    return meta57def getAnnotation( annotation ):58    """59    load metadata from scene annotation file60    """61    # get xml schema for new task62    meta = {}63    with open ( annotation  ) as fd:64        doc = xmltodict.parse( fd.read() )65    # get resolution66    meta[ 'pixel_spacing' ] = { 'range' : float( findItems( doc, 'rangePixelSpacing' )[ 0 ] ),67                                    'azimuth' : float( findItems( doc, 'azimuthPixelSpacing' )[ 0 ] ) }68    # get scene dimensions69    meta[ 'image' ] = { 'samples' : int( findItems( doc, 'numberOfSamples' )[ 0 ] ),70                            'lines' : int( findItems( doc, 'numberOfLines' )[ 0 ] ) }71    # get viewing geometry72    meta[ 'projection' ] = findItems( doc, 'projection' )[ 0 ]73    meta[ 'incidence_mid_swath' ] = float ( findItems( doc, 'incidenceAngleMidSwath' )[ 0 ] )74    # get heading75    meta[ 'heading' ] = float ( findItems( doc, 'platformHeading' )[ 0 ] )76    if meta[ 'heading' ] < 0.0: 77        meta[ 'heading' ] = meta[ 'heading' ] + 360.078    return meta79def getGeolocationGrid( annotation ):80    """81    load metadata from scene annotation file82    """83    # get xml schema for new task84    meta = {}85    with open ( annotation  ) as fd:86        doc = xmltodict.parse( fd.read() )87    # get gcps88    meta[ 'gcps' ] = []89    for pt in doc[ 'product' ][ 'geolocationGrid' ][ 'geolocationGridPointList' ][ 'geolocationGridPoint' ]:...

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