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<body class='hmmessage'><div dir='ltr'>Dear list,<div>I met a problem in understanding the outputs from i.theilsen module.</div><div>In order to see the NDVI trend, I use this module to produce a Theil-Sen slope map using 15 years annual summed NDVI maps as inputs.</div><div>Another output is Mann-Kendall test map. It has values ranging from 1 to 2, which I couldn't link to the theory.</div><div>I know that theoretically, Kendall's tau values (-1~1) can be used to evaluate trend. A value of +1 indicates a trend that continuously increases and a value of -1 if it always decrease. A value of 0 indicates no consistent trend.</div><div>That's what I want to understand from the Mann-Kendall test map.</div><div><br></div><div>Thanks for any help!</div><div><br></div><div>Best,</div><div>Xiaoye</div> </div></body>
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