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<h1>Negative values</h1>
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var neg_data = [
{"period": "2011-08-12", "a": 100},
{"period": "2011-03-03", "a": 75},
{"period": "2010-08-08", "a": 50},
{"period": "2010-05-10", "a": 25},
{"period": "2010-03-14", "a": 0},
{"period": "2010-01-10", "a": -25},
{"period": "2009-12-10", "a": -50},
{"period": "2009-10-07", "a": -75},
{"period": "2009-09-25", "a": -100}
];
Morris.Line({
element: 'graph',
data: neg_data,
xkey: 'period',
ykeys: ['a'],
labels: ['Series A'],
units: '%'
});
</pre>
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