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#TableOfContents
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---
---++ Purpose
Add or alter column(s) with derived values according to user-defined arithmetic operation between column(s). Column labels are tagged by '#label#' in formulas. Use ';' for ',' in functions. Numpy is available as 'np'.  Special variables: #_row_# -- row index Examples: (1) magnitude of vector -- "np.linalg.norm(#vec#)" (2) rounded root of row number -- "round(math.sqrt(#_row_#);3)"

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---++ Usage
<pre>
&gt; addCalculation options <a href=./AsciiTableFormat.html>ASCII table</a>(s) 
</pre>

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---++ Options
   $=-l= / =--label=: 
   (list of) new column labels
   $=-f= / =--formula=: 
   (list of) formulas corresponding to labels
   $=-c= / =--condition=: 
   condition to alter existing column data (optional)