the graph to save as PNG
whether day mode is active
Iff true, include the whole graph, otherwise only include what is inside the canvas boundaries.
Iff true, generate a high resolution picture using the maximum width and height from config.js. Otherwise, either use the native resolution of the canvas (full=false) or the standard resolution (full=true) from config.js.
nothing
Save the graph as a PNG (lossless compression).