I have a strip chart which is constantly accepting data. I have been displaying it like this:
Under this design, data is added to the right edge, and old data "falls off" the left edge, but it can be seen again by making the window larger. This design is inspired by the Windows Task Manager:
Today, one of my coworkers suggested that I change the design, instead displaying the data like this:
In this design, the right edge is static, and data is added to the left side. When the data reaches the left edge, the graph shifts to the right in a paginated fashion.
I cannot rely on the expertise of my users, nor on their experience using computers. They will be interested in seeing the history, for instance, leaving the device on over the weekend to collect data, then coming in on Monday and reviewing it. The data comes in roughly once a second, so long periods of time can lead to lots of information for them to process. How much is contained in a single screenshot depends a few different factors (such as monitor resolution), but can come out to anything between one or two minutes to half an hour.
Which of these two designs would be more useful to them?