I have a flat text file containing 3300 lines. Each line contains a time string hh:mm:ss and a float separated by a space. I read the file into vectors and plot them on a qcustomplot. All 3300 data points plot on one screen all bunched together. I have scrolling enabled so eventually I can spread it out to make it readable. How can I make it come up initially spread out, or expanded, as to make it readable.