input">[glat,glon] = antbounds_data(<span class="string">'gl'</span>);
tracklat = [-75.4491  -75.4657  -75.3771  -75.1145];
tracklon = [-94.4371  -95.4879  -97.8617 -101.0862];
</pre><p>For context, let's plot these data:</p><pre class="codeinput"><span class="comment">% Initialize a 350 km map centererd on PIG:</span>
mapzoomps(<span class="string">'pine island glacier'</span>,<span class="string">'mapwidth'</span>,350,<span class="string">'inset'</span>,<span class="string">'northeast'</span>)

<span clas