Viewing Events in JAS3

Installing Java Analysis Studio JAS3

See this page for instructions on how to install JAS3.

Opening files in JAS3

One can open a single LCIO file using the "File→ Open File" button sequence. This will open up a familiar file location browser where you can locate the file of interest.

One can also open a sequence of files using the "File→ Open Data Source" button sequence.

This will allow you to locate and Add... multiple files to the collection:

You can then Save... this as a named list and Restore... it in the future.

JAS3 maintains a list of files previously opened, which can be accessed via the "Files → Recent Files" button sequence.

The name of the file or file collection will appear in the toolbar along with buttons for moving forward and backwards through the file.

Next advances one event.

Go N... will loop through the next N events.

Go will loop until the end of the file.

While looping, one can Stop.

While looping, one can also Pause.

One can also revisit Previous events.

Or Rewind to the beginning of the file..

LCSim Event Browser

One can open the LCSim Event Browser using the "File→New → LCSimEvent Browser" button sequence:

or by clicking on the LCSim Event Browser icon on the navigation bar.

This displays the Event Header with its metadata and a list of all collections saved in the current LCIO event along with their types and sizes.

Note that these lists can be sorted by  Name, Type or Size by clicking on the column headers.

Selecting any individual collection from the list on the left will display the objects contained in that list.

The list of objects can similarly be sorted by attribute by clicking on the column header.

WIRED event viewer

Open the WIRED4 event display viewer using "File→ New→ Wired4 View." 

The default view displays the detector, all objects in the current LCIO event and an (x,y,z) axis system for orientation. By default, one is looking upstream along the z axis.

One can customize the scene and viewpoint using the following controls:

Zoom (spacebar + Z)

Zoom by selecting a rectangular region (spacebar + X )

Zoom with a rotated rectangular region (spacebar + A)

Rotate in 3D (spacebar + R )

Rotate in the viewer plane (spacebar + F )

Translate in the viewer plane (spacebar + T )

One can also measure distances (spacebar + R ). The distance will appear to the lower left of the display.

Pick an object (spacebar + H )

Pick all objects within a rectangle (spacebar + P )

In case you ever find yourself disoriented or unsure what you are viewing or where you are viewing

from you can reset the scene

You can fill the window with the currently visible objects

You can also save the image in a variety of vector and raster formats.

These menu items can also be accessed by right-clicking in the viewer and selecting Interaction.

One can customize the objects visible in the viewer by expanding either the Detector and Event Types or Instances.

Unchecking the unwanted items will remove them from the scene.