s a simple, general pattern: an edge.
</figcaption>
</figure>
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<p>There is nothing in <a href="#fig-paint-edge" class="quarto-xref">Figure&nbsp;<span class="quarto-unresolved-ref">fig-paint-edge</span></a> to discern that the edge in question is between the reflection of the sky and the prow of a boat. It’s just an abstract edge.</p>
<p>This Lesson describes how we specify to the computer the kind of simple, general pattern we are looking for in data. It also shows the “shapes” of those patterns