Quadrant analysis (340)

= Key =

= Data =

= Plot =

This is a plot of repeated 2-gram counts for the non-rotated and non-flipped 340 cipher, showing how the counts are affected by varying the quadrant intersection point (i,j). The bottom front axis is the column j. The right axis is the row i.  The left axis is the count of repeated 2-grams.



Unlike the 408 cipher, the maximums do NOT consistently occur at or near (i,j) = (0,0), which is the original cipher without quadrants.