Interpreting <node><matrix> elements inside a visual scene

Hi All,
Could anybody please let me know how to interpret

  1. <node><matrix> elements inside a visual scene?

My exported .dae file contains <matrix> elements like
<node id=“Bhagwan_K1” name=“Bhagwan_K1”>
<matrix>
-0.000000 0.000000 0.058018 -3.450324
0.049441 0.000000 0.000000 15.665791
0.000000 0.044767 -0.000000 -0.066573
0.000000 0.000000 0.000000 1.000000
</matrix>
<instance_node url="#Bhagwan_K"/>
</node>

              &lt;node id="UT745.127_1" name="UT745.127_1"&gt;
                 &lt;matrix&gt;
                    -0.023421 -0.000000 -0.000000 3.878220
                    0.000000 -0.020956 0.000000 14.320306
                    -0.000000 0.000000 0.018071 -0.560578
                    0.000000 0.000000 0.000000 1.000000
                 &lt;/matrix&gt;
                 &lt;instance_node url="#UT745.127"/&gt;
              &lt;/node&gt;
  1.      &lt;node id="Camera" name="Camera"&gt;
         &lt;matrix&gt;
            -0.016231 -0.274697 0.961394 47.676266
            0.999868 -0.004459 0.015606 15.109614
            -0.000000 0.961521 0.274733 14.757887
            0.000000 0.000000 0.000000 1.000000
         &lt;/matrix&gt;
         &lt;instance_camera url="#Camera-camera"/&gt;
      &lt;/node&gt;
    

Thanks
Harshal

(1) <matrix> is a transform element that is (part of) the definition of a <node> coordinate system. A COLLADA node is a place where you declare the instantiation of various things (e.g. geometry and cameras).

(2) Same answer as for (1) unless you have another question here?

Did you read the COLLADA specification?