t works independent of the nature of the underlying geographies, but comes at the heavy price of only being an estimate. To be useful for research purposes we also need methods to estimate the errors this introduces and the effects this has on subsequent analysis results.</p>
<p>Methods to facilitate this are still under active development.</p>
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<h3 id="cite-tongfen">Cite <strong>tongfen</strong>
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<p>If you wish