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</o:shapelayout></xml><![endif]--></head><body lang=IT link="#0563C1" vlink="#954F72" style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span lang=EN-US>Dear all,<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>I am having troubles in processing a Sentinel-2 image with i.atcorr. <o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>The command I use is the following:<o:p></o:p></span></p><p class=MsoNormal><span class=font><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New";mso-fareast-language:IT'>i.atcorr -r -input=immagine@mapset range=0,10000 parameters=C:\...\22giugno2020_b4.txt output=immagine_atcorr rescale=0,1<o:p></o:p></span></span></p><p class=MsoNormal><span lang=EN-US>and I obtain this output:</span><span lang=EN-US><o:p></o:p></span></p><p style='margin:0cm'><span class=font><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>wavelength less than 0.25 micron:</span></span><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana",sans-serif'><o:p></o:p></span></p><p style='margin:0cm'><span class=font><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>let's take s(l)=s(0.25)</span></span><span class=font><span lang=EN-US style='font-family:"Courier New"'><o:p></o:p></span></span></p><p style='margin:0cm'><span class=font><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>Atmospheric correction...</span></span><span lang=EN-US style='font-family:"Verdana",sans-serif'><o:p></o:p></span></p><p style='margin:0cm'><span class=font><span lang=EN-US style='font-size:10.0pt;font-family:"Courier New"'>Atmospheric correction complete.</span></span><span lang=EN-US style='font-size:10.0pt;font-family:"Verdana",sans-serif'><o:p></o:p></span></p><p class=MsoNormal><i><span lang=EN-US><o:p> </o:p></span></i></p><p class=MsoNormal><span lang=EN-US>The map I obtain is constituted by pixels with 6.669033e-34 values.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Can anyone explain the meaning of the output and why I obtain a NULL value corrected map?<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US>Thank you for your support.<o:p></o:p></span></p><p class=MsoNormal><span lang=EN-US><o:p> </o:p></span></p></div></body></html>