How to subtract two doubles?
<p>I want to get IRQ in Spark. How can I subtract two values (double or int)? </p>

<p>I tried the code below but only got error:</p>

<pre><code>scala&gt; Q1
res103: org.apache.spark.sql.Row = [11.09314]
scala&gt; Q3
res104: org.apache.spark.sql.Row = [34.370419]
scala&gt; val IRQ = Math.abs(Q3-Q1)
&lt;console&gt;:43: error: value - is not a member of org.apache.spark.sql.Row
       val IRQ = Math.abs(Q3-Q1)
</code></pre>