Of course it's not a perfect reproduction. A few elements would benefit from improvements: - The typography is not ideal, with Pinyon Script a rather poor match with that used by Playfair. This is especially so for the Roman numerals following monarchs' names (e.g. George III). Unicode symbols Ⅰ, Ⅱ, Ⅲ and Ⅳ could be used, but they are not supported by this particular font. While Fredericka The Great provides something of the slightly imprecise text decoration used by Playfair, its modern design is a little jarring. There are commercial fonts available that would be improvements such as [Antiquarian Scribe](https://fonts.adobe.com/fonts/antiquarian-scribe), but licensing would restrict sharing on Observable. - ${await FileAttachment("layering.jpg").image({ height: 60 })} As with most modern visualization and graphics systems, Observable Plot specifies marks in _layers_ (z-value). This works well for most designs, but cannot capture the hand-crafted layering the title panel being 'under' the bars, 'over' the grid, yet the grid is over the bars. - ${await FileAttachment("axisLabels.jpg").image({ height: 120 })} The double axis labelling is achieved by providing a single centred label and padding the midpoint with spaces (`" ".repeat(20)` etc.). This doesn't reproduce the off-centre labelling used by Playfair and results in a poorly spaced right axis label.

- ${await FileAttachment("barGrads.jpg").image({ height: 70 })}The bar shading gradient doesn't reproduce the hand painted gradients of the original that create regions of bars that tend to emphasise monarchs' ruling periods. - ${await FileAttachment("rotatedText.jpg").image({ height: 60 })}Plot rotates text around an anchor point so it cannot reliably follow a curve. This was somewhat simplistically addressed above by splitting the line annotation midway and rotating each element at a slightly different angle. As a consequence, the approach would not be adaptable to different aspect ratios (where the line it follows could be at a different angle). An alternative would be to define an SVG [textPath](https://developer.mozilla.org/en-US/docs/Web/SVG/Element/textPath), but one of the satisfying elements of this reproduction has been that it (largely) uses core Plot marks and transforms.