modPreview: Preview MODIS satellite images
In RGISTools: Handling Multiplatform Satellite Images

Description Usage Arguments Details Value Examples

modPreview shows a preview of the n-th image from a set of search results on an interactive map.

modPreview(
  searchres,
  n,
  dates,
  lpos = c(3, 2, 1),
  add.Layer = FALSE,
  verbose = FALSE,
  ...
)

`searchres`	a vector with the results from `modSearch`.
`n`	a `numeric` argument identifying the location of the image in `searchres`.
`dates`	a vector with the dates being considered for previewing. This argument is mandatory if `n` is not defined.
`lpos`	vector argument. Defines the position of the red-green-blue layers to enable false color visualization.
`add.Layer`	logical argument. If `TRUE`, the function plots the image on an existing map. Allows combinations of images on a map using `lsPreview` and `senPreview` functions.
`verbose`	logical argument. If `TRUE`, the function prints the running steps and warnings.
`...`	arguments for nested functions: arguments allowed by the `viewRGB` function from `mapview` packages are valid arguments.

The function shows a preview of the n-th output image from a search in the MODIS archives (modSearch, with resType = "browseurl"). The preview is downloaded from the ‘EarthData’ Platform. Please, be aware that only some images may have a preview.

this function does not return anything. It displays a preview of one of the search results.

## Not run: 
# load a spatial polygon object of Navarre
data(ex.navarre)
# retrieve jpg images covering Navarre region between 2011 and 2013
sres <- modSearch(product = "MOD09GA",
                  startDate = as.Date("01-01-2011", "%d-%m-%Y"),
                  endDate = as.Date("31-12-2013", "%d-%m-%Y"),
                  collection = 6,
                  extent = ex.navarre)
                      
modPreview(sres,n=1)
modPreview(sres,2,add.Layer=T)

## End(Not run)