Line not drawn.

I have a web container with a canvas object on it to draw a vertical line.
Right now it’s trying to draw a line whose lenght is 69675 (units).
The canvas dimensions are 25x69675.
The line isn’t appearing.

69675? You’re probably exceeding the limits of the canvas. Have you tried drawing it in segments?

As in many canvases or is a canvas even necessary to draw a line?