read a line of an ArrayBuffer

Hello,

i'm a bit newb with arrayBuffer...
i use a flipdot display compose with 1 line of 7 points and a block of 7 lines of 7 points.
I need an array of 8x8 to drawString(t,x,y)

var g = Graphics.createArrayBuffer(8,8,1);

How to access of the data stored in the first line of the array?
g[0] ?
and the rest of the buffer?

sorry for this basic question but i don't know how to use this object.

No problem - by default g.buffer is an untyped arraybuffer, so ideally you make it into something typed:

var g = Graphics.createArrayBuffer(8,8,1);
// ...
var a = new Uint8Array(g.buffer);
a[0]
// you can still change 'g' and the values in 'a' will change too

I've done this...
i'm waiting the postman with the 7x1 display for testing... (monday or later)

  g = Graphics.createArrayBuffer(8,8,1);
  g.setFont4x6();
  g.drawString(texte,compteur,0);
  a = new Uint8Array(g.buffer);
  // ecran 1x7
  Serial1.write([0x80,0x89,Adress],a[0],[0­x8F]);
  // ecran 7x7
  Serial1.write([0x80,0x87,Adress2],a[1],a­[2],a[3],a[4],a[5],a[6],a[7],[0x8F]);

Yes, that seems fine. Just FYI - you don't need g.setFont4x6(texte,compteur,0); - you can just write g.setFont4x6();

@Gordon oups, you're rigth.
It's a bad cut/past.
I've modifying the code
Thanks