[GRASS-user] inconsistency between i.atcorr manual and wiki

Markus Neteler neteler at osgeo.org
Fri Sep 24 10:24:50 EDT 2010


On Fri, Jul 30, 2010 at 7:20 PM, Daniel Victoria
<daniel.victoria at gmail.com> wrote:
> Hi all,
>
> Reading on the Atmospheric Correction Wiki [1] and the i.atcorr man
> page [2] I noticed some inconsistencies. In the manual, the exemple
> uses the lsat7_2002_40 image from the NC dataset directlly but, on the
> wiki tutorial, the image is first converted to TOA radiance and then
> intput into i.atcorr. Seeing that i.atcorr scales the input image to 0
> - 255 (iscl parameter), is it necessary to convert the images to TOA
> radiance? Should I follow the i.atcorr manual exemple or the wiki
> exemple?

Yes.

I have made significant updates in the manual page today (all GRASS
versions). Also the Wiki page received a fix for the overpass time.

Markus

> Thanks
> Daniel
>
> [1] - http://grass.osgeo.org/wiki/Atmospheric_correction
> [2] - http://grass.itc.it/gdp/html_grass64/i.atcorr.html
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