best way to unregister or remove items from scrawl

[davehorner]

This is the example I was working on today; it uses scrawl now.
https://codepen.io/Dave-Horner/pen/NPWrpRX
(if you show controls and change the color dropdown, its supposed to recreate the images in the row with the new scheme)
when I change color scheme, and it attempts to recreate the track of images and recreate the images for the track it does:

  function generateScrawlImages(track, rowIndex, scheme) {
    // Clear previous canvases from track
    track.innerHTML = "";
 }

I find myself with

scrawl.js:1 Uncaught TypeError: Cannot read properties of undefined (reading 'height')
   at Gp.measureFont (scrawl.js:1:470071)
   at If.t.cleanFont (scrawl.js:1:391548)
   at Gp.prepareStamp (scrawl.js:1:471816)
   at scrawl.js:1:187797
   at Array.forEach (<anonymous>)
   at Dc.prepareStamp (scrawl.js:1:187650)
   at Dc.stamp (scrawl.js:1:186975)
   at Eh.compile (scrawl.js:1:246026)
   at fu.compile (scrawl.js:1:283110)
   at RenderAnimation.fn (scrawl.js:1:297928)

scrawl doesn't like being cut off at the knees.

I see

library.purge()
Given a namespace string, kill all objects created with that namespace
purge

looks like I need to step through the track and library.purge each canvas's namespace. just wondering if there's another or better way to be tracking and clearing things. I will give this a shot.

      // Remove existing canvases for this row namespace
  const canvasId = `scrawl-canvas-${rowIndex}`;
  scrawl.library.purge({ name: canvasId });
    // Clear previous canvases from track
    track.innerHTML = "";

tried the above and

Uncaught TypeError: Cannot read properties of undefined (reading 'height')

still dealing with something. any thoughts would be appreciated!

      // scrawl.makeLabel({
     //   name: picName,
     //   start: [20, 20],
     //   text: picName,
     //   order: 2,
     //   fontString: 'bold 40px Garamond, serif',
     // });

if I comment out the label, the errors go away.
each of the images are supposed to be a different color and change when the drop down changes. I'm not sure what's up but the colorings are not working.

[KaliedaRik]

To purge the library, use scrawl.purge(namespace-string). I think you're currently using an object as the function's argument?

Hope that helps!

[davehorner]

It did help. thank you.