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Simple Introductory Examples

Viewing Images

NOTE: when learning, or developing new graphs it can be useful to slow ami down to 1Hz, using the "-b" and "-f" options shown in

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the first example

Viewing Images

• Login to a psana node and setup the environment as shown above, then type:

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• When the AMI window comes up in the "search sources" box on the top left type "opal".  That will select only detectors that have the string "opal" in them
• drag the text "tmo_atmopal:raw:image" into the rightmost part of the ami window, a red box will appear
• click on the red box. a Pyqtgraph window should appear with the image, which will update at 1Hz.  The plot has many user-settable attributes.  You can try clicking the "wrench" icon in the upper left and removing the Auto-Range and Auto-Levels settings (followed by "Apply"): this will give you more control of the color scale using the horizontal yellow control bars on the right.

Step-Scan Example

A 2D-ROI, summed over pixels.  Mean value of pixel-sum is plotted vs. step_value.

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