r/src/geo/CRS.js#L30" class="improvelink">[help to improve]</a>
     -->
    <!-- <a href="#.createProj4" class="improvelink">[link]</a> -->
    </h4>

    
    </li>
    
    




<div class="description">
    Create a <a href="https://github.com/OSGeo/proj.4">proj4</a> style CRS used by maptalks <br>
</div>


    <!--<h5>Example:</h5>-->
    
    
        <pre class="prettyprint"><code>{
    "type"       : "proj4",
    "properties" : {
        "proj"   : "+proj=longlat +datum=WGS84 +n