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XMM-Newton Science Analysis System


rmfgen (rmfgen-1.55.1) [xmmsas_20070708_1801-7.1.0]

Meta Index / Home Page / Algorithm

MATRIX table creation

• Go through corrected matrix to find out the following statistics:
  1. The largest number of channel groups in a row
  2. The largest number of channel elements in a row above threshold

• Create empty output table header and structure.

• Create a linked list (GROUP_LIST) to store groups of contiguous elements

• Foreach row in corrected matrix:
  • Create a linked list corresponding to a single group (GROUP).

  • Foreach element in row
    • If element is above threshold, add element to GROUP.

    • Else push GROUP onto GROUP_LIST, and create a new instance of the GROUP structure for the next group of contiguous elements.

  • End element loop

  • Write out GROUP_LIST to output table.

  • Create a new instance of GROUP_LIST for the next row.

• end row loop