The P&F that I know posts another mark (an x or o, at least 1) if price moves to that 'next box', and reverses direction, and moves to the right (next column) if price reverses by nominally 3 boxes.
My presumption about your chart is that price 'changes' are noted every minute, and the appropriate 'another mark' / 'move to the right' goes on the chart.
I'd like to compare the columns of x's and o's that happen over an hours time, to 60 x 1 minute bars on a candlestick chart.
So rather than the 250 columns on your chart, how about just 60 or so?
rr