  Suraj,

  It depends on the MODIS product you are using. A suggestion is to use the quality information that is shipped with each image.

  For example, considering that you use the NDVI MOD13A2 product, a reliability is available to pick-up only high-confidence products. Still talking about NDVI (for example), see Table 1 and Table 2 under the "Layers" tab at this webpage: https://lpdaac.usgs.gov/products/modis_products_table/mod13a2

  Best,
  Thiago.


________________________________
 From: Suraj Pandey <suraj.cimmyt@gmail.com>
To: "R-sig-Geo@r-project.org" <R-sig-Geo@r-project.org> 
Sent: Monday, September 17, 2012 2:22 PM
Subject: [R-sig-Geo] Cloud removal Modis data

Hi All,

Can any one help me in explaining cloud removal method for Modis image????

Best,

Suraj

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