Hi,
I'm trying to calibrate Landsat 8 OLI data to TOA reflectance in ENVI 5.1.0.1 but i can't seem to find the function in the toolbox. I'm new to ENVI 5 but according to the help, from the toolbox i should be able to select Radiometric Correction > Radiometric Calibration. However in my toolbox all i see is Radiometric Correction > Apply Gain and Offset , where is the Radiometric Calibration option which opens up the old dialogue box asking you whether you want to correct to radiance or TOA?
Many thanks
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