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<body class='hmmessage'><div dir='ltr'><font style="" color="#c0504d"><font style="font-size: 12pt;" size="3"><b><span style="background-color: rgb(255, 255, 255);"><font style="" color="#000000">Hello, <br><br>I have a Landsat TM image (2007) and I work in</font></span></b></font></font><font style="" color="#c0504d"><font style="font-size: 12pt;" size="3"><b><span style="background-color: rgb(255, 255, 255);"><font style="" color="#000000"><font style="" color="#c0504d"><font style="font-size: 12pt;" size="3"><b><span style="background-color: rgb(255, 255, 255);"><font style="" color="#000000"> Windows 7 </font></span></b></font></font>using </font></span></b></font></font><font style="" color="#c0504d"><font style="font-size: 12pt;" size="3"><b><span style="background-color: rgb(255, 255, 255);"><font style="" color="#000000"><font style="" color="#c0504d"><font style="font-size: 12pt;" size="3"><b><span style="background-color: rgb(255, 255, 255);"><font style="" color="#000000">Grass 7.0.0.<br>In my first preprocessing step, I decided to convert DN to Top-of-Atmosphere Radiance using the module from GUI i.landsat.toar.<br>Beginning with band B3, I used in the Base name of input raster maps the band B3 from the mapset I work, and in the Prefix for output raster maps the same name with toar in the end.<br>In the tab Matadata, I upload the MTL.txt, in the Spacecraft sector I chose tm5 and finally in the tab Optional I chose the -r flag in order to have radiance values.<br>I don't know if that helps, however the command that appears is:<br>i.landsat.toar -r input=b3cc@tm2007 output=b3cctoar metfile=C:/Users/User/Desktop/thessaloniki/2007tm/thessaloniki2007tm/LT51840322007175MOR00_MTL.txt sensor=tm5<br>Calculating....<br>ERROR: Unable to open header file for raster map <b3cc@tm20071@><br><br>Thank you<br><br><br><br><br><br><br></font></span></b></font></font><br><br></font></span><br><br></b></font></font> </div></body>
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