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  How to make PolarChart to show negative values
Posted by Youssef on Aug-14-2009 09:42
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Hi,

I have this data to show on a polar chart:

$data0 = array( 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0);
$data1 = array(-2,-2,-2,-2,-3,-2,-3,-3,-1,-2,-3,-2,-1,-1,-3,-2,-2,-2,-1,-3,-3,-3,-2,-2,-3,-1);
$data2 = array( 2, 2, 3, 3, 2, 3, 3, 3, 2, 1, 3, 2, 2, 2, 2, 3, 3, 3, 2, 3, 3, 3, 3, 3, 2, 1);

but the problem is the polar chart starts with value "0" in the middle and converts the negative numbers to positive !! see attached pic

please help

regards
radar.png

  Re: How to make PolarChart to show negative values
Posted by Youssef on Aug-14-2009 15:04
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the problem solved by adding

$c->radialAxis->setLinearScale(-3,3,1);