mapcanvas.py

                mapCanvas.refreshAllLayers()

    def registerMapCanvas(mapCanvas):
        mapCanvas.extentsChanged.connect(lambda: syncExtents(SpatialExtent.fromMapCanvas(mapCanvas)))

    for i, f in enumerate(files):
        ml = QgsRasterLayer(f)
        #QgsMapLayerRegistry.instance().addMapLayer(ml)
        lyrs.append(ml)

        #mapCanvas = QgsMapCanvas(w)
        mapCanvas = MapCanvas(w)
        mapCanvas.setCrsTransformEnabled(True)
        registerMapCanvas(mapCanvas)
        hl2.addWidget(mapCanvas)
        #mapCanvas.setLayers([QgsMapCanvasLayer(ml)])
        mapCanvas.setLayers([ml])

        if i == 0:
            btnCrs.setCrs(ml.crs())
        mapCanvases.append(mapCanvas)

        btnCrs.crsChanged.connect(onRefresh)
        btnRefresh.clicked.connect(onRefresh)
    w.show()
    onRefresh()
    qgsApp.exec_()
    qgsApp.exitQgis()

if __name__ == '__main__':
    from timeseriesviewer import utils
    from timeseriesviewer.mapcanvas import MapCanvas
    from example.Images import Img_2014_01_15_LC82270652014015LGN00_BOA
    from example import  exampleEvents
    qgsApp = utils.initQgisApplication()



    def printTimeDelta(dt):
        print(dt)
    c = MapCanvas()
    c.sigDataLoadingFinished.connect(printTimeDelta)
    c.show()
    lyr1 = QgsRasterLayer(Img_2014_01_15_LC82270652014015LGN00_BOA)
    lyr2 = QgsVectorLayer(exampleEvents, 'events', 'ogr', True)

    c.layerModel().addLayerInfo(lyr2, True)
    c.layerModel().addLayerInfo(lyr1, True)

    for l in c.layerModel().visibleLayers():
        print(l)

    c.setDestinationCrs(lyr1.crs())
    c.setExtent(lyr1.extent())
    c.refresh()
    qgsApp.exec_()