Outputs a boolean GTS with ticks labeled with true where anomalies are detected. Detection is done with a moving ZSCORETEST within a custom mapper.

moving_ZSCORETEST.mc2

<%
  // Store the argument that will be passed to MAP
  [ 'gts' 'pre' 'post' 'occ' 'steps' ] STORE
  
  // Build the custom mapper
  <%
    // Make a GTS from the moving window
    LIST-> DROP [ 'cur' 'c' 'l' 't' 'lat' 'lon' 'elev' 'v' ] STORE
    $t [] [] [] $v MAKEGTS
    
    // Apply the anomaly detection test
    true 3.0 ZSCORETEST
    
    // Output one value per anomalous tick found
    0 'i' STORE
    { SWAP <% $i TOSTRING [ 3 ROLL NaN NaN NaN true ] $i 1 + 'i' STORE %> FOREACH }
  %>
  MACROMAPPER 3 MAXLONG STRICTMAPPER 'mapper_zscore_test' STORE

  // call MAP to create the boolean GTS with the flagged anomalies
  [ $gts $mapper_zscore_test $pre $post $occ $steps true ] MAP MERGE 'anomalies' RENAME
%>