r the target geography is fixed, we won’t be able to use the <code>tongfen</code> methods to compute the data on a common geography but have to instead rely on estimates. The <code>tongfen_estimate</code> makes no assumption on the underlying geographies and returns estimates of the data on the target geography. It uses area-weighted interpolation to achieve this, and can be refined to dasymmetric estimates using the <code>proportional_reaggregate</code> function.</p>
<p>This method has the example that i