Reflectance range

[Andy Maclachlan]

Hi all

What scale does ARCSI put out surface reflectance, after looking at my data i am assuming it is between 0 and 1,000 but can't find it actually stated anywhere?

Cheers

Andy 

[Pete Bunting [pfb]]

Hi Andy, 

Great, glad it is working for you. 

ARCSI multiples the values by 1000, so 505 is 50.5% or a value of 0.505 when scales 0-1. The minimum value is 1 (i.e., 0.1%) within the outputs images as 0 is used as the no data value. The output images are unsigned 16bit integer images to keep file sizes to a minimum and when compressed, particularly with KEA, they shrink down very well too.

Best wishes, 

Pete

****************************************************
* Dr Pete Bunting
* Senior Lecturer in Remote Sensing
* Earth Observation and Ecosystem Dynamics Group
* Department of Geography and Earth Sciences
* Aberystwyth University
* Aberystwyth
* Ceredigion
* SY23 3DB
* UK
* 
* Ph: +44 (0) 1970 622615
* Mob: +44 (0) 7917 842743
* Email: p...@aber.ac.uk
* ORCID: http://orcid.org/0000-0002-7435-0148
****************************************************

On 8 Dec 2014, at 16:40, Andy Maclachlan <andym...@gmail.com> wrote:

Hi all

What scale does ARCSI put out surface reflectance, after looking at my data i am assuming it is between 0 and 10,000 but can't find it actually stated anywhere?

Cheers

Andy 

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