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--- neuroelf_gui_-_loading_data [2011/03/17 01:32] – created jochen
+++ neuroelf_gui_-_loading_data [2011/03/17 02:15] (current) – jochen
@@ Line 36: / Line 36: @@
 end</code>
+===== Accessing previously loaded objects =====
+In case you need access to an object that has been loaded via the GUI (e.g. to alter some settings that are not exposed through the GUI), you can first get a list of all loaded objects by calling ''xff'' without any arguments:
+<code matlab xff_get_root_object.m>% get root object
+xroot = xff;</code>
+By displaying the output of this object (or statement, either by not using a semicolon in the above statement or by just typing ''xroot'' without semicolon) you will get a list of loaded files, and can then access any of those objects by giving the object number or, for objects that were loaded from disk, the filename:
+<code matlab xff_get_specific_object.m>% access object number 4
+object = xroot(4);
+% access object with name "subject21.vmr"
+vmr21 = xroot('subject21.vmr');</code>
+===== Switching between objects =====
+Once an object is loaded into the NeuroElf GUI, it is accessible via one of the dataset selection dropdowns (see item #1 on the [[NeuroElf GUI#gui_layout|GUI page]]). In its standard view (when started up), the GUI shows the 3-sections view of volume-based datasets (e.g. VMRs). To switch to surface-based objects, you need to click on the surface button on the right-most toolbar.
+Since surface-based maps (SMPs) can only be displayed on matching objects (with the same number of vertices), changing the surface (SRF) object will also change the associated SMP object. This does, however, not affect the display directly. To change the displayed object(s) in the surface view, please (multi-) select the desired entries in the Scenery listbox below the surface.
+===== Undocking the current view =====
+To browse several objects at once, the current view can be "undocked" into a separate window by clicking the undock button (first button in the right-most toolbar). This separate window can be resized to improve visualization depending on the screen size. Any statistical maps displayed will be equally copied to the new window, which also allows to inspect several statistical maps (at the same position) at once, but also allows to browse the same map at different positions (unlinking the browsing position across windows).