title: Create qplots (with ggplot2) larger than the window?
body: <p>I have a large chart with many data points. When I create the qplot in R, the chart is auto-fitted to the window. Even if I maximize the window, the chart is still too small and details are lost. I would like to save it as a large PNG and then look at certain areas at 1:1 resolution with an image viewer (as I cannot zoom in easily in R). Rendering the chart for a range of the values is not really convenient, I'd like to have one PNG and scroll around and discuss it with my peers, rather than pre-generating a bunch of subgraphs.</p>
  
  <p>Is this possible? I kind of expect to be so, but some help would be appreciated (I've recently started with R so am still finding my way around).</p>
  
  <p>Thank you.</p>