I've just installed gpsprof on the Raspberry Pi and am using it to create a plot of GPS performance:
gpsprof -n 10000 -T png | gnuplot >gps.png
which works very well. What I would like to do is to increase the size of the PNG file produced to be larger than its present 640 x 480 pixels. I've tried reading the gnuplot manual and searching online, but it's currently beaten me as to how I might modify the command line above to change the plot size!
Help, please!