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<body class="hmmessage"><div>This post seemes to have drowned, so I dare to bump it, hoping that some less confused people like me might anwser to it.</div><div>I'm using QGIS for years now, but I never figured out how that stuff is supposed to work.</div><div>One of the reasons why I try to do a lot of stuff now in R is that NA is NA !</div><div><br></div><div>Am 08.10.2014, 11:27 Uhr, schrieb Niccolò Marchi <sciurusurbanus@hotmail.it>:<br></div><br><blockquote style="margin: 0 0 0.80ex; border-left: #0000FF 2px solid; padding-left: 1ex"><div dir="ltr">hi all!<br>please, is there someone who could explain properly all the "NoData topic"?<br><br>I mean:<br>1. differences in setting negative values (-999, -9999, -3.40282e +35, etc) VS NoData (Nan, NoData, NULL)<br>2. how QGIS handles it<br>3. "best practices" or good hints for managing them<br><br>sorry but I've quite a big confusion.<br><br>Thank you very much in advance!<br><br>Nic<br> </div></blockquote><br><br><br><div id="M2Signature"><div>-- </div><div>Bernd Vogelgesang<br>Siedlerstraße 2<br>91083 Baiersdorf/Igelsdorf<br>Tel: 09133-825374</div></div></body></html>