<p>Hello,</p>
<p> </p>
<p>I'm looking for help on a request that doesn't seeam that complicated but that I can't find a way to solve it using birt ...</p>
<p> </p>
<p>I have a dataset containing three values : "Date" , item name" , "value"</p>
<p> </p>
<p>I'd like to get a table containing :</p>
<p>- Rows Items names</p>
<p>- Colums dates</p>
<p>- Values : for each item, the variation of "value" from the previous date; values(date)-value(date-1).</p>
<p> </p>
<p>Any idea on how this could be done using birt ?</p>
<p> </p>
<p>Thanks in advance for your help !</p>
<p>Regards.</p>
