[GRASS-user] Using i.atcorr on SPOT4 and SPOT5 imagery

[Markus Neteler]

Hi Cody,

On Thu, Jul 5, 2012 at 8:27 PM, Cody Schank <codyschank at gmail.com> wrote:
..
> One other thing.  For the input range, is it necessary to put the actual
> range of the input radiance values (range usually about 0 to 150).  If I
> leave it as 0,255 I get different output values.  Just want to clarifiy the
> significance of that input field.

You mean:

iscl=min,max
    Input imagery range [0,255]
    Default: 0,255

Honestly I don't know - In the source code I see:

    struct Option *iscl;    /* input data is scaled to this range */

Perhaps internally the command wants to see the image scaled to 8bit?
Anyone having an idea?

Markus