0). An Atlas of the Spatial Patterning of County-Level Homicide, 1960-1990. Pittsburgh, PA, National Consortium on Violence Research (NCOVR). <a href='https://geodacenter.github.io/data-and-lab/ncovr/'>https://geodacenter.github.io/data-and-lab/ncovr/</a></p>
    <h2 class="hasAnchor" id="details"><a class="anchor" href="#details"></a>Details</h2>

    <p>Sf object, unprojected. EPSG 4326: WGS84.</p>

    <h2 class="hasAnchor" id="examples"><a class="anchor" href="#examples"></a>Examples</h2>
    <pre class