Detailed patterned carpet installation guidelines the most common types of pattern repeats are set match and half drop which have been demonstrated on page iii of the introduction.
Half drop carpet.
Half drop pattern repeats are generally large and the have a staggered repeat half way down the pattern repeat already so half a repeat usually works fine for positioning the pattern.
Video demonstrating what a fabric with a half drop pattern repeat is.
Shop for half round rugs online at target.
A pattern in printed high low cut loop or figured woven carpet which repeats diagonally.
The length of the fabric cut drops adjusted cut drops for your curtain or blind will be the same as for a normal patterned fabric.
It may be necessary to use stay nails and stretch the carpet at intervals to bring the carpet in to perfect match.
A quick explanation of what a fabric half drop pattern repeat is.