Great - thanks all. I'll let you know how I get on.
Thanks
On Sath 8 Noll 2018 at 12:09, Markus Neteler wrote:
> On Fri, Dec 7, 2018 at 8:14 PM Stefan Blumentrath
> wrote:
> >
> > Hi Shane,
> >
> > Following up on robertos answer:
> >
> > You could try the Normalized Difference Water Index
On Fri, Dec 7, 2018 at 8:14 PM Stefan Blumentrath
wrote:
>
> Hi Shane,
>
> Following up on robertos answer:
>
> You could try the Normalized Difference Water Index (NDWI) which is computed
> for S-2 as:
>
> ndwi = (B08-B11)/(B08+B11)
>
> or alternatively
>
> ndwi = (B03 - B08) / (B03 + B08)
>
>
r, Sentinel-1 would have to be pre-processed in SNAP/gpt.
>
>
>
> Cheers
>
> Stefan
>
>
>
> *From:* grass-user *On Behalf Of *Shane
> Carey
> *Sent:* fredag 7. desember 2018 17:35
> *To:* roberto.marzoc...@gmail.com
> *Cc:* grass-user grass-user
>
Subject: Re: [GRASS-user] Sentinel2- flooding
Ok, thanks.
Le gach dea ghui,
Shane Carey
GIS and Data Solutions Consultant
On Fri, Dec 7, 2018 at 2:45 PM Roberto Marzocchi
mailto:roberto.marzoc...@gmail.com>> wrote:
I Think there isn't any tool pre-configured. You need to find an
Ok, thanks.
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*
On Fri, Dec 7, 2018 at 2:45 PM Roberto Marzocchi <
roberto.marzoc...@gmail.com> wrote:
> I Think there isn't any tool pre-configured. You need to find an index to
> calculate "flooded" cells and then you can simply
I Think there isn't any tool pre-configured. You need to find an index to
calculate "flooded" cells and then you can simply use r.mapcalc
R
Il giorno ven 7 dic 2018 alle ore 14:45 Shane Carey
ha scritto:
> Hi,
>
> I've obtained an image from sentinel2 where it shows flooding. Just
> wondering
Hi,
I've obtained an image from sentinel2 where it shows flooding. Just
wondering are there tools in Grass to classify an image in order to pull
out these "flooded" pixels?
Thanks
--
Le gach dea ghui,
*Shane Carey*
*GIS and Data Solutions Consultant*
