Hi<br>I&#39;m new user of boost library<br>I tried to create a graph but I can&#39;t modify the weight_map of this graph.<br>In my code:<br><br>boost::property_map&lt;Triangultio<div id="mb_0">n,boost::edge_weight_t&gt;::type weight_map=get(boost::edge_weight,ft);<br>

|<br>|<br>put(weight_map,*eit,100);<br><br><br>at compile time I&#39;ve for command &quot;put&quot;: &quot;../property_map.hpp:319: error: invalid lvalue in assignment<br><br><br>Best regards<br><span class="sg">-Bombielfil-</span></div>