<div dir="ltr">Thanks for your help Martin, I will see what I can do.<div><br></div><div>I would still like to learn if there is a way to check what PROJ4 is up to, as this is the first time I have worked with grid shift files I have no confidence I am doing so correctly.</div></div><div class="gmail_extra"><br clear="all"><div><div class="gmail_signature" data-smartmail="gmail_signature"><div dir="ltr"><div><div dir="ltr"><div>--</div><div>Jody Garnett</div></div></div></div></div></div>
<br><div class="gmail_quote">On 26 May 2016 at 11:19, Martin Desruisseaux <span dir="ltr"><<a href="mailto:martin.desruisseaux@geomatys.com" target="_blank">martin.desruisseaux@geomatys.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">I forgot to said: in order to verify what GeoTools actually used - i.e.<br>
whether it used the grids or the TOWGS84 parameters, and in the later<br>
case which parameter values -, a System.out.println(theMathTransform)<br>
would help.<br>
<span class="HOEnZb"><font color="#888888"><br>
Martin<br>
<br>
</font></span></blockquote></div><br></div>