We just tried to export the image for the zoomed area and it seems to be working fine. Here is the jsfiddle. In case this does not solve your problem please create a jsfiddle with the issue so that we can understand and help you out.
Hello is there any parameter of the export function ? I would like to export picture that is much bigger that what is display on my screen. I have graph by date and it’s running on 2 years so to have over all picture on my screen I have set monthly axis but I would like to change axis to weekly when I export and get a large PNG file.
Is it possible?