<div dir="ltr">If it helps, here's the source code and attached is a sample binary file:<div>
<pre style="margin-top:0px;margin-bottom:0px">
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#808000">void</span><span style="color:#c0c0c0"> </span><span style="color:#800080">QuadTree</span>::writeBinaryVTK(<span style="color:#800080">string</span><span style="color:#c0c0c0"> </span>file_name,<span style="color:#c0c0c0"> </span><span style="color:#800080">vtk_data_format</span><span style="color:#c0c0c0"> </span>format){</pre>
<pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>num_of_nodes,<span style="color:#c0c0c0"> </span>num_of_cells,<span style="color:#c0c0c0"> </span>num_of_leaf_cells;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>node_of_cell[<span style="color:#000080">4</span>];</pre>
<pre style="margin-top:0px;margin-bottom:0px">
<span style="color:#c0c0c0"> </span><span style="color:#808000">const</span><span style="color:#c0c0c0"> </span><span style="color:#800080">QuadCell</span><span style="color:#c0c0c0"> </span>*cell<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>get_cells();</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">const</span><span style="color:#c0c0c0"> </span><span style="color:#800080">QuadNode</span><span style="color:#c0c0c0"> </span>*node<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>get_nodes();</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">double</span><span style="color:#c0c0c0"> </span>x,<span style="color:#c0c0c0"> </span>y,<span style="color:#c0c0c0"> </span>z;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>i_max,<span style="color:#c0c0c0"> </span>j_max;</pre><pre style="margin-top:0px;margin-bottom:0px">
<span style="color:#c0c0c0"> </span><span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>i_min,<span style="color:#c0c0c0"> </span>j_min;</pre><pre style="margin-top:0px;margin-bottom:0px"><br>
</pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>num_of_cells<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>number_of_cells();</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>num_of_nodes<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>number_of_nodes();</pre>
<pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#800080">ofstream</span><span style="color:#c0c0c0"> </span>binWriter(file_name.c_str(),<span style="color:#c0c0c0"> </span><span style="color:#800080">ios</span>::binary);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter<span style="color:rgb(192,192,192)"> </span><<<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">"# vtk DataFile Version 2.0 \n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"Quadtree Mesh \n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"BINARY \n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"DATASET UNSTRUCTURED_GRID \n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"POINTS "</span><span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span>number_of_nodes()<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">" double \n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">for</span><span style="color:#c0c0c0"> </span>(<span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>n=<span style="color:#000080">0</span>;<span style="color:#c0c0c0"> </span>n<num_of_nodes;<span style="color:#c0c0c0"> </span>n++){</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>x<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>x_fr_i(node[n].<span style="color:#800000">i</span>);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>y<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>y_fr_j(node[n].<span style="color:#800000">j</span>);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>z<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#000080">0.0</span>;</pre><pre style="margin-top:0px;margin-bottom:0px">
<span style="color:rgb(192,192,192)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter.write((<span style="color:rgb(128,128,0)">char</span>*)&x,<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,128,0)">sizeof</span>(<span style="color:rgb(128,128,0)">double</span>));</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter.write((<span style="color:#808000">char</span>*)&y,<span style="color:#c0c0c0"> </span><span style="color:#808000">sizeof</span>(<span style="color:#808000">double</span>));</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter.write((<span style="color:#808000">char</span>*)&z,<span style="color:#c0c0c0"> </span><span style="color:#808000">sizeof</span>(<span style="color:#808000">double</span>));</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>}</pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>num_of_leaf_cells<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#000080">0</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">for</span><span style="color:#c0c0c0"> </span>(<span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>n=<span style="color:#000080">0</span>;<span style="color:#c0c0c0"> </span>n<num_of_cells;<span style="color:#c0c0c0"> </span>n++){</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">if</span><span style="color:#c0c0c0"> </span>(<span style="color:#c0c0c0"> </span>cell[n].is_leaf()<span style="color:#c0c0c0"> </span>)<span style="color:#c0c0c0"> </span>num_of_leaf_cells++;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>}</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"\n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"CELLS "</span><span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span>num_of_leaf_cells<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">" "</span><span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#000080">5</span>*num_of_leaf_cells<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"\n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">for</span><span style="color:#c0c0c0"> </span>(<span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>n=<span style="color:#000080">0</span>;<span style="color:#c0c0c0"> </span>n<num_of_cells;<span style="color:#c0c0c0"> </span>n++){</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">if</span><span style="color:#c0c0c0"> </span>(<span style="color:#c0c0c0"> </span>cell[n].is_leaf()<span style="color:#c0c0c0"> </span>){</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>i_min<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span>cell[n].<span style="color:#800000">imin</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>j_min<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span>cell[n].<span style="color:#800000">jmin</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>i_max<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span>cell[n].imax();</pre><pre style="margin-top:0px;margin-bottom:0px">
<span style="color:#c0c0c0"> </span>j_max<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span>cell[n].jmax();</pre><pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px">
<span style="color:#c0c0c0"> </span>node_of_cell[<span style="color:#000080">0</span>]<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>get_node_by_coordinates(i_min,j_min);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>node_of_cell[<span style="color:#000080">1</span>]<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>get_node_by_coordinates(i_max,j_min);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>node_of_cell[<span style="color:#000080">2</span>]<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>get_node_by_coordinates(i_max,j_max);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>node_of_cell[<span style="color:#000080">3</span>]<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#808000">this</span><span style="color:#c0c0c0"> </span>-><span style="color:#c0c0c0"> </span>get_node_by_coordinates(i_min,j_max);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,128,0)">int</span><span style="color:rgb(192,192,192)"> </span>num_of_childs<span style="color:rgb(192,192,192)"> </span>=<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,0,128)">4</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter.write((<span style="color:rgb(128,128,0)">char</span>*)&num_of_childs,<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(128,128,0)">sizeof</span>(<span style="color:rgb(128,128,0)">int</span>));</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter.write((<span style="color:#808000">char</span>*)&node_of_cell[<span style="color:#000080">0</span>],<span style="color:#c0c0c0"> </span><span style="color:#808000">sizeof</span>(<span style="color:#808000">int</span>)*<span style="color:#000080">4</span>);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>}</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>}</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter<span style="color:rgb(192,192,192)"> </span><<<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">"\n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"CELL_TYPES "</span><span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span>num_of_leaf_cells<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"\n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">int</span><span style="color:#c0c0c0"> </span>cell_type<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span><span style="color:#000080">9</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">for</span><span style="color:#c0c0c0"> </span>(<span style="color:#800080">CaslInt</span><span style="color:#c0c0c0"> </span>n=<span style="color:#000080">0</span>;<span style="color:#c0c0c0"> </span>n<num_of_leaf_cells;<span style="color:#c0c0c0"> </span>n++)<span style="color:#c0c0c0"> </span>binWriter.write((<span style="color:#808000">char</span>*)&cell_type,<span style="color:#c0c0c0"> </span><span style="color:#808000">sizeof</span>(<span style="color:#808000">int</span>));</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter<span style="color:rgb(192,192,192)"> </span><<<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">"\n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">switch</span><span style="color:#c0c0c0"> </span>(format){</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">case</span><span style="color:#c0c0c0"> </span><span style="color:#800080">POINT_DATA</span>:{</pre><pre style="margin-top:0px;margin-bottom:0px">
<span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"POINT_DATA "</span><span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span>num_of_nodes<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"\n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">break</span>;</pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>}</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">case</span><span style="color:#c0c0c0"> </span><span style="color:#800080">CELL_DATA</span>:{</pre><pre style="margin-top:0px;margin-bottom:0px">
<span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"CELL_DATA "</span><span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span>num_of_cells<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"\n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">break</span>;</pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>}</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>}</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter.close();</pre>
<pre style="margin-top:0px;margin-bottom:0px">}</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#808000">void</span><span style="color:#c0c0c0"> </span><span style="color:#800080">QuadTree</span>::writeBinaryVTK(<span style="color:#800080">ArrayV</span><<span style="color:#808000">double</span>><span style="color:#c0c0c0"> </span>&F,<span style="color:#c0c0c0"> </span><span style="color:#800080">string</span><span style="color:#c0c0c0"> </span>data_name,<span style="color:#c0c0c0"> </span><span style="color:#800080">string</span><span style="color:#c0c0c0"> </span>file_name){</pre>
<pre style="margin-top:0px;margin-bottom:0px"><br></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#800080">ofstream</span><span style="color:#c0c0c0"> </span>binWriter(file_name.c_str(),<span style="color:#c0c0c0"> </span><span style="color:#800080">ios</span>::app<span style="color:#c0c0c0"> </span>|<span style="color:#c0c0c0"> </span><span style="color:#800080">ios</span>::binary);</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter<span style="color:rgb(192,192,192)"> </span><<<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">"SCALARS "</span><span style="color:rgb(192,192,192)"> </span><<<span style="color:rgb(192,192,192)"> </span>data_name<span style="color:rgb(192,192,192)"> </span><<<span style="color:rgb(192,192,192)"> </span><span style="color:rgb(0,128,0)">" double \n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter<span style="color:#c0c0c0"> </span><<<span style="color:#c0c0c0"> </span><span style="color:#008000">"LOOKUP_TABLE default \n"</span>;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span><span style="color:#808000">double</span><span style="color:#c0c0c0"> </span>*pF<span style="color:#c0c0c0"> </span>=<span style="color:#c0c0c0"> </span>(<span style="color:#808000">double</span>*)F;</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:#c0c0c0"> </span>binWriter.write((<span style="color:#808000">char</span>*)pF,<span style="color:#c0c0c0"> </span><span style="color:#808000">sizeof</span>(<span style="color:#808000">double</span>)*F.size());</pre>
<pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:rgb(192,192,192)"> </span>binWriter.close();</pre>
<pre style="margin-top:0px;margin-bottom:0px">}</pre></pre><pre style="margin-top:0px;margin-bottom:0px"></pre><pre style="margin-top:0px;margin-bottom:0px"><span style="color:#cfbfad"><br></span></pre><pre style="margin-top:0px;margin-bottom:0px">
<span style="color:#cfbfad"><br></span></pre></div><div><div class="gmail_quote">On Tue, May 15, 2012 at 2:25 PM, Mohammad Mirzadeh <span dir="ltr"><<a href="mailto:mirzadeh@gmail.com" target="_blank">mirzadeh@gmail.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><div dir="ltr">Hi guys,<div><br></div><div>I have a problem getting pv open my binary file. It basically segfaults and terminates without any information. When I run in gdb I get:</div>
<div><br></div><div><div>ERROR: In /build/buildd/paraview-3.8.1/VTK/IO/vtkDataReader.cxx, line 1910</div>
<div>vtkUnstructuredGridReader (0x19f6890): Unsupported data type: 1</div><div><br></div><div>Program received signal SIGBUS, Bus error.</div><div>0x00007fffeaeb6597 in vtkDataSetSurfaceFilter::UnstructuredGridExecute(vtkDataSet*, vtkPolyData*) ()</div>
<div> from /usr/lib/paraview/libvtkGraphics.so.pv3.8</div></div><div><br></div><div><div>Program terminated with signal SIGBUS, Bus error.</div></div><div><br></div><div>Is there something wrong with my data file? I could send a sample file if needed. I basically followed <a href="http://www.vtk.org/VTK/img/file-formats.pdf" target="_blank">http://www.vtk.org/VTK/img/file-formats.pdf</a> to write the binary format.</div>
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