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<div>Hi Dan</div>
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<div>First thing, we are going to remove the method</div>
<div>session.createGateway().</div>
<div>Please have a look at <a href="https://trac.openmicroscopy.org.uk/ome/wiki/OmeroMatlab">https://trac.openmicroscopy.org.uk/ome/wiki/OmeroMatlab</a> to see how to load images, read data etc.</div>
<div><br>
</div>
<div>To load the channel information</div>
<div>You will have to do the following (pseudo –code) I will that example to the page.</div>
<div>svc = session.getPixelsService() /</div>
<div>Pixels pixels = svc.<span class="Apple-style-span" style="font-size:11px; font-family:Monaco,sans-serif">retrievePixDescription</span>(pixelsID)</div>
<div>Pixels.copyChannels() will return the channels loaded.</div>
<div><br>
</div>
<div>Jmarie</div>
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<span style="font-weight:bold">From: </span>Dan Withey <<a href="mailto:DWithey@csir.co.za">DWithey@csir.co.za</a>><br>
<span style="font-weight:bold">Date: </span>Fri, 3 Feb 2012 18:43:20 +0200<br>
<span style="font-weight:bold">To: </span><<a href="mailto:ome-devel@lists.openmicroscopy.org.uk">ome-devel@lists.openmicroscopy.org.uk</a>><br>
<span style="font-weight:bold">Subject: </span>[ome-devel] Channel data from Matlab<br>
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<div>Hello,</div>
<div> </div>
<div>Is there a way to access image channel data using Matlab? When attempting this, the following error is reported:</div>
<div> </div>
<div>Error using omero.model.PixelsI/getChannel<br>
Java exception occurred:<br>
omero.UnloadedCollectionException: Error updating collection:channelsSeq<br>
Collection is currently null. This can be seen<br>
by testing "channelsSeqLoaded". This implies<br>
that this collection was unloaded. Please refresh this object<br>
in order to update this collection.<br>
</div>
<div> </div>
<div>Here's the code:</div>
<div> </div>
<div>client = loadOmero(url); </div>
<div> </div>
<div>session = client.createSession(user, password);<br>
gateway = session.createGateway();<br>
timer = omeroKeepAlive(client); % Creates and starts a 60 second timer.<br>
userId = session.getAdminService().getEventContext().userId;</div>
<div> </div>
<div>ContainerProxy = session.getContainerService();</div>
<div> </div>
<div>params = omero.sys.ParametersI();<br>
params.leaves();%indicate to load the images<br>
params.exp(omero.rtypes.rlong(userId));</div>
<div> </div>
<div>projectsList = ContainerProxy.loadContainerHierarchy(char('omero.model.Project'), [], params);<br>
p = projectsList.get(0);</div>
<div> </div>
<div>datasetsList = p.linkedDatasetList;<br>
d = datasetsList.get(0);</div>
<div> </div>
<div>imageList = d.linkedImageList;<br>
image = imageList.get(0);</div>
<div> </div>
<div>pixelsList = image.copyPixels();<br>
pixels = pixelsList.get(0);</div>
<div> </div>
<div>pixels.getChannel(0);<br>
</div>
<div> </div>
<div>Thanks!</div>
<div>Dan</div>
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