R/l_layer.R
l_layer_layerVisibility.Rd
Although the visibility flag for a layer might be set to
TRUE
it won't be rendered as on of its ancestor group layer is set
to be invisible. The l_layer_visibility
returns TRUE
if the
layer and all its ancestor layers have their visibility flag set to true
and the layer is actually rendered.
l_layer_layerVisibility(widget, layer)
widget | widget path or layer object of class |
---|---|
layer | layer id. If the widget argument is of class |
TRUE
if the layer and all its ancestor layers have their
visibility flag set to true and the layer is actually rendered, otherwise
FALSE
.
Visibile layers are rendered, invisible ones are not. If any
ancestor of a layer is set to be invisible then the layer is not rendered
either. The layer visibility flag can be checked with
l_layer_isVisible
and the actual visibility (i.e. are all the
ancesters visibile too) can be checked with
l_layer_layerVisibility
.
Note that layer visibility is not a state of the layer itself, instead is information that is part of the layer collection (i.e. its parent widget).