I am using ENVI 5.4, specifically 'Data Stretch' tool in a bid to scale down my Landsat 8 OLI surface reflectance product values. I have populated the dialogue box (as below) and compared the histogram of the resultant raster with the original one.

However, there is anomaly noticed in its values (see histogram). I anticipate same histogram stretch however this is not the case.

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Why there is such discrepancy in the results?

  • 1
    Try with band math b1*0.0001 and compare results – aldo_tapia Nov 21 '17 at 14:28
  • I have alternate options as you suggested but intending to know what might be wrong with this tool and is there any way to get acceptable results while using this tool. – Ben Nov 22 '17 at 6:19

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