Detector Correction Widget

The Detector Correction widget provides a graphical interface to:

• correct spatially deformed detector data into a flat plane.

• visualize the shift between raw and corrected peak positions.

Functionality

This widget allows you to:

1. Load Segmented Peaks: Input a Nexus URL containing your segmented 3D peaks.

2. Configure Correction: Specify your spline or e2dx/e2dy files.

3. Visualize Results: Compare raw pixels (Blue circles) vs. Corrected pixels (Red crosses)

User Interface

Control Panel

Detector Correction Settings

• “Correction with spline file”: check if the detector correction should use a spline file (exclusive with “Correction with Dx/Dy file”)

• “Correction with Dx/Dy file”: check if the detector correction should use dx/dy file (exclusive with “Correction with spline file”)

Execution Control

• “Execute Detector Correction”: button to trigger the processing.

• “Overwrite”: check to overwrite existing results at the expected location.

Plot Area (Right)

The widget shows the effect of the correction:

• Blue circles: Represent the raw pixel positions from the input data.

• Red crosses: Represent the spatially corrected positions after execution.

Example Usage

1. Connect a widget that outputs a segmented_peaks_url.

2. Select your .spline file in the parameters box.

3. Click Execute. The plot will update to show the overlaid “before and after” coordinates.