I am doing a quick data evaluation. First I made a simple check if the measured values are within a possible range (see code).After that I would like to detect "frozen values". I have a value, and if the next 5 following measurements have exactly the same value I would like to flag them. Does anybody has an idea how to code it? 
# Station Loop 
for ($i=0;$i<=$#data;$i++) { 

# check if value is available else set flag 9

if ($channel[$i][$value_index] eq '')
 {$QV[$i]=9}

# Range Check 
if ($N <= 300) {$MIN_TOL=2.5; $MAX_TOL=45.5};

# Flagging
if ($channel[$i][$value_index] < $MIN_TOL || $channel[$i][$value_index
+] > $MAX_TOL ) { $QV[$i]=4 } else {$QV[$i]=2} }

###"Stuck Value Test"???


}

}

[download]
Thanks in advance

In reply to Stuck Value by halligalli

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