Description Usage Arguments Details Value Examples
senPreview
shows a preview of the n
-th image from a set of
search results on an interactive map.
1 2 3 4 5 6 7 8 9 10 11 | senPreview(
searchres,
username,
password,
n,
dates,
lpos = c(3, 2, 1),
add.Layer = FALSE,
verbose = FALSE,
...
)
|
searchres |
a vector with the results from |
username |
ESA’s ‘SciHub’ username. |
password |
ESA’s ‘SciHub’ password. |
n |
a |
dates |
a vector with the dates being considered
for previewing. This argument is mandatory if
|
lpos |
vector argument. Defines the position of the red-green-blue layers to enable false color visualization. |
add.Layer |
logical argument. If |
verbose |
logical argument. If |
... |
arguments for nested functions:
|
The function shows a preview of the n
-th output image from a search
in Sentinel archives (modSearch
). The preview is downloaded from
‘SciHub’s' website. Please, be aware that only some images may have a preview.
Credentials from an ESA’s ‘SciHub’ account are needed, which can be obtained
here.
this function does not return anything. It displays a preview of one of the search results.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 | ## Not run:
# load a spatial polygon object of Navarre
data(ex.navarre)
# perform the search query
sres <- senSearch(startDate = as.Date("2018210","%Y%j"),
endDate = as.Date("2018218","%Y%j"),
platform = "Sentinel-2",
extent = ex.navarre,
product = "S2MSI1C",
username = "username",
password = "password")
# preview some images
senPreview(sres, username = "username", password = "password",n=1)
senPreview(sres, username = "username", password = "password",n=3, add.Layer =TRUE)
# show the dates in julian days
senGetDates(names(sres),format="%Y%j")
senPreview(sres,
username = "username",
password = "password",
dates = senGetDates(names(sres[3])))
## End(Not run)
|
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