rohitg00/ai-engineering-from-scratch · error · ValueError

width and height must be at least 3

Error message

width and height must be at least 3

What it means

Error "width and height must be at least 3" thrown in rohitg00/ai-engineering-from-scratch.

Source

Thrown at phases/19-capstone-projects/44-cosine-lr-warmup/code/main.py:187

            step=self.global_step,
            lr=rate,
            grad_l2_norm=grad_norm,
            loss=float(loss.detach().item()),
        )
        self._log.append(record)
        self.global_step += 1
        return record


def plot_schedule_ascii(
    schedule: CosineWithWarmup,
    width: int = PLOT_WIDTH,
    height: int = PLOT_HEIGHT,
) -> str:
    """Return a text plot of the schedule across [0, total_steps]."""

    if width <= 2 or height <= 2:
        raise ValueError("width and height must be at least 3")
    total = schedule.total_steps
    step_axis = [
        int(round(i * total / max(1, width - 1))) for i in range(width)
    ]
    rates = [schedule.lr(step) for step in step_axis]
    upper = max(rates)
    if upper <= 0:
        upper = 1.0

    grid = [[" "] * width for _ in range(height)]
    for col, rate in enumerate(rates):
        row = int(round((height - 1) * (1.0 - rate / upper)))
        row = max(0, min(height - 1, row))
        grid[row][col] = "*"

    rows: list[str] = []
    for r, row in enumerate(grid):
        label = upper * (1.0 - r / max(1, height - 1))

View on GitHub (pinned to 39ea8a1c6d)

When it happens

Trigger: Thrown at phases/19-capstone-projects/44-cosine-lr-warmup/code/main.py:187 when the library encounters an invalid state.

Common situations: See trigger scenarios.

AI-assisted analysis of rohitg00/ai-engineering-from-scratch@39ea8a1c6d (2026-08-26). Data as JSON: /api/errors/11897230c23c4e6a. Report an issue: GitHub.