[color=indigo]A recent Knitty Gritty show demo’ed how to knit on the diagonal, beginning with CO of 3 sts and inc 2 sts every other row.
They said that you could just go on increasing that way to make a triangular shawl. My question is about how to determine the final number of stitches you need for the long side of the triangle (top of the scarf) and how to determine the rate of increases, ie, every 2, 3, 4 , or more rows (?). Continuing with inc 2 every 2 rows, you might reach thedesired ending amount of stitches (say, 172) before the shawl was wide enough from top to bottom, no.
Perhaps there is a pattern somewhere that would make this easier.