Global and project-level functions
iface.newProject	Start a blank project.
iface.addRasterLayer iface.addRasterLayer.RasterBrick iface.addRasterLayer.RasterLayer iface.addRasterLayer.RasterStack iface.addRasterLayer.list iface.addRasterLayer.default	Add a new raster layer to QGIS.
iface.addTileLayer	Add a new tile server raster layer to QGIS.
iface.addVectorLayer iface.addVectorLayer.geo_json iface.addVectorLayer.sf iface.addVectorLayer.list iface.addVectorLayer.default	Add a new vector layer to QGIS.
iface.defaultStyleSheetOptions	Return changeable options built from settings and/or defaults.
Map canvas functions
mapCanvas.center	Get map center, in geographical coordinates.
mapCanvas.crsTransformEnabled mapCanvas.setCrsTransformEnabled mapCanvas.crsTransformEnabled<-	Set whether on-the-fly reprojection is enabled or disabled.
mapCanvas.destinationCrs mapCanvas.setDestinationCrs	Get or set the map canvas' destination coordinate reference system.
mapCanvas.extent	Get the current zoom exent of the map canvas, in geographical coordinates.
mapCanvas.fullExtent	Get the combined exent for all layers on the map canvas, in geographical coordinates.
mapCanvas.layerCount	Return number of layers on the map that are set visible.
mapCanvas.magnificationFactor	Retrieve the magnification factor of the map canvas.
mapCanvas.mapSettings mapCanvas.mapSettings.xml	Retrieve configuration for rendering of the map.
mapCanvas.saveAsImage	Retrieve currently visible map canvas content.
mapCanvas.scale	Get the last reported scale of the canvas.
mapCanvas.setCenter	Set map center, in geographical coordinates.
mapCanvas.setExtent	Zoom to the given feature extent.
mapCanvas.zoomIn	Zoom in by a fixed factor.
mapCanvas.zoomOut	Zoom out by a fixed factor.
mapCanvas.zoomScale	Zoom to a specific scale.
mapCanvas.zoomToFullExtent	Zoom to the full extent of all layers.
mapCanvas.zoomToSelected	Zoom to the extent of the selected features of current (vector) layer.
Querying map layers shown on the map canvas
mapCanvas.layer	Retrieve information about a visible map layer.
mapCanvas.layers	Retrieve list of layers within map canvas that are set visible.
mapCanvas.layerCount	Return number of layers on the map that are set visible.
Querying the map layer registry
mapLayers	Returns information about all registered layers.
mapLayer	Retrieve information about a layer by id.
mapLayers.count	Returns the total number of registered layers (visible or not).
mapLayers.removeMapLayer	Remove a layer from the registry by layer ID.
Manipulating individual map layers
qgislayer	R object class representing a QGIS layer.
mapLayer	Retrieve information about a layer by id.
mapLayer.crs mapLayer.setCrs mapLayer.crs<-	Get or set the coordinate reference system for the given layer.
mapLayer.renderer mapLayer.setRenderer mapLayer.renderer<-	Retrieve or set a layer's feature or raster renderer in XML format.
mapLayer.style	Retrieve a layer's XML style element.
mapLayer.visible mapLayer.setVisible mapLayer.visible<-	Get or set a layer's visibility in the map canvas.
Accessing layer features
mapLayer.getFeatures	Return information about features of a vector layer.
mapLayer.selectedFeatureCount	Retrieve the number of features that are selected in a vector layer.
mapLayer.selectedFeatures	Return information about the currently selected features from a vector layer.
mapCanvas.zoomToSelected	Zoom to the extent of the selected features of current (vector) layer.
Processing
processing.alglist processing.alghelp processing.algoptions	Retrieve information about available processing algorithms.
processing.runalg	Run a processing algorithm on the given data.
Helper classes and functions
qgisCRS	Check or convert object to a QGIS-compatible CRS specification.
qgislayer	R object class representing a QGIS layer.
qgisxml qgisxml.all qgisxml<-	Access and set configuration fields of a QGIS configuration XML chunk.
Low-level package functions
qgisremote	Make a low-level call to a QGIS Network API.
qgisremote.options	Set or get QGIS Network API connection details for current session.