Most knitting charts come as rectangles but shawl shapes vary. Today I show you how converting charts for triangle shawls works, and share my knowledge about how to make triangle charts work with you.
This post is part of my article series about adapting stitch patterns. You can browse the table of contents here:
Converting Charts for Triangle Shawls
Let’s have a look at an example. Assume we found a lovely stitch pattern in rectangle shape but want to design a triangle shawl with increases on both sides: two stitches every other row (like most triangle side panels are constructed). The chart we’d like to use is the one shown below.
Step #1: The Shape
The shape we selected is a triangle with symmetrical increases on both sides, two increases every other row. This is the pattern template:
- Row 1 (RS): k1, YO, k to last st, YO, k1.
- Row 2 (WS): Knit.
Step #2: The Drawing Canvas
For the pattern outlined above the drawing canvas looks like the following picture.
Step #3: Designing Within the Canvas
Now let’s try to fill our canvas with our chosen stitch pattern. First of all, we copy one pattern repeat (the section outlined in black) into the drawing canvas as shown below.
So now what? There’s a lot of white space around our lace pattern. It would look much nicer if there were some pattern stitches too, wouldn’t it? Let’s fill them according to the pattern.
If you have a close look at the chart above you will notice the unpaired central double decrease (cdd) in row 15, column 11. This chart won’t work – only in a repeat, but not alone! The solution is to introduce a setup section as shown below: now the yarn overs in row 15, columns 12 and 20 are paired properly.
But how to continue after the setup section? What we need is a chart for the rest of our triangle shawl, too! This chart for the rest of the shawl consists of three parts: the center part (repeated section), a left and a right side. These sides account for orphaned yarn overs we need to avoid (the example above with the unpaired cdd is such an orphan).
The resulting chart is shown below: the center section (outlined in black) is repeated, the side parts account for our triangle shaping.
You might notice the fact that our repeated section is 10 x 10 stitches and the total increases per repeat is 20 stitches (the yarn overs on both sides sum up to 20).
This is not by accident.
How Triangle Chart Repeats Really Work
Triangle charts like these work because every repeat creates enough stitches on both sides to fit in another center repeat (the section outlined in black).
To make triangle charts work, your pattern repeats must be as wide as the number of increases per repeat.
If this rule is not followed you will either have too few stitches to fit in a complete repeat on the sides or create additional stitches (if your increase rate is higher) you need to find a solution for.
My rule: two increases every other row need square charts (10 x 10, 20 x 20, 13 x 13, …) if only right side rows are charted, and the double amount of rows if every row is charted (10 x 20, 20 x 40, …).
Please have a look at the pictures above to verify this rule for the charts shown in this article.
Now go and try it for yourself – grab some paper and a pen and convert a rectangular chart of your choice into a triangle one, and let me know how it goes by leaving a comment below!