Aladin data collections tree : advanced usage

We introduced in another tutorial the Aladin desktop data collections tree, and we will now demonstrate advanced available features.

1. First of all, you can rearrange or sort the tree in different ways: using the "Sort" button at the bottom, you can rearrange the tree for example by wavelength domain, or by publication year.
2. The sorting can be applied to all leaves under a given node by first selecting it, and using the dedicated sort button.
3. There are various icons used for data collections : first an icon identifying the data provider, an RGB icon to quickly distinguish colour compositions from single band images, and a small yellow asterisk to identify new collections.
4. The tree can be also filtered by sophisticated advanced rules, clicking on the dedicated button, for example catalogues with proper motions.
5. These advanced filters can be named and stored for future usages, in addition to predefined ones.
6. For some data collections, the information on spatial coverage is not readily available : they appear in grey, and are identified with a small orange icon. One can use the "scan" button to query if such a service has an overlap with the current field of view or not.

Download Aladin desktop : http://aladin.u-strasbg.fr/java/nph-aladin.pl?frame=downloading