Retrieve the names of MODIS layers for a product
Source:R/MODIStsp_get_prodlayers.R
MODIStsp_get_prodlayers.RdFunction used to retrieve the names of original MODIS layers, quality layers and eventually available spectral indexes given a MODIS product code. It is useful to identify the names of the layers to be processed when launching MODIStsp from the CLI.
Arguments
- prodname
character containing the code of the desired MODIS product. NOTE: for products available separately for Terra and Aqua (e.g., MOD13Q1/MYD13Q1), use the code MD_code_ (e.g., MD13Q1)
- prodver
character containing the version of the desired MODIS product. Currently versions
"061"(default) and"006"can be chosen.
Value
list, containing the slots: prodname, bandnames, quality_bandnames and
indexes_bandnames, band_fullnames, quality_fullnames, indexes_fullnames
Examples
# Get layers of product M*13Q1 based on code
MODIStsp_get_prodlayers("M*13Q1")
#> $prodname
#> [1] "Vegetation Indexes_16Days_250m (M*D13Q1)"
#>
#> $bandnames
#> [1] "NDVI" "EVI" "VI_QA" "b1_Red" "b2_NIR" "b3_Blue"
#> [7] "b7_SWIR" "View_Zen" "Sun_Zen" "Rel_Az" "DOY" "Rely"
#>
#> $bandfullnames
#> [1] "16 day NDVI average" "16 day EVI average"
#> [3] "VI quality indicators" "Surface Reflectance Band 1"
#> [5] "Surface Reflectance Band 2" "Surface Reflectance Band 3"
#> [7] "Surface Reflectance Band 7" "View zenith angle of VI pixel"
#> [9] "Sun zenith angle of VI pixel" "Relative azimuth angle of VI pixel"
#> [11] "Day of year of VI pixel" "Quality reliability of VI pixel"
#>
#> $quality_bandnames
#> [1] "QA_qual" "QA_usef" "QA_aer" "QA_adj_cld" "QA_BRDF"
#> [6] "QA_mix_cld" "QA_land_wat" "QA_snow_ice" "QA_shd"
#>
#> $quality_fullnames
#> [1] "VI Quality"
#> [2] "VI usefulness"
#> [3] "Aerosol quantity"
#> [4] "Adjacent cloud detected"
#> [5] "Atmosphere BRDF correction performed"
#> [6] "Mixed Clouds"
#> [7] "Land/Water Flag"
#> [8] "Possible snow/ice"
#> [9] "Possible shadow"
#>
#> $indexes_bandnames
#> [1] "SR" "NDFI" "NDII7" "SAVI"
#>
#> $indexes_fullnames
#> [1] "Simple Ratio (NIR/Red)"
#> [2] "Flood Index (Red-SWIR2)/(Red+SWIR2)"
#> [3] "NDII7 (NIR-SWIR2)/(NIR+SWIR2)"
#> [4] "SAVI (NIR-Red)/(NIR+Red+0.5)*(1+0.5)"
#>
# Get layers of product M*13Q1 based on full name
MODIStsp_get_prodlayers("Vegetation Indexes_16Days_250m (M*D13Q1)")
#> $prodname
#> [1] "Vegetation Indexes_16Days_250m (M*D13Q1)"
#>
#> $bandnames
#> [1] "NDVI" "EVI" "VI_QA" "b1_Red" "b2_NIR" "b3_Blue"
#> [7] "b7_SWIR" "View_Zen" "Sun_Zen" "Rel_Az" "DOY" "Rely"
#>
#> $bandfullnames
#> [1] "16 day NDVI average" "16 day EVI average"
#> [3] "VI quality indicators" "Surface Reflectance Band 1"
#> [5] "Surface Reflectance Band 2" "Surface Reflectance Band 3"
#> [7] "Surface Reflectance Band 7" "View zenith angle of VI pixel"
#> [9] "Sun zenith angle of VI pixel" "Relative azimuth angle of VI pixel"
#> [11] "Day of year of VI pixel" "Quality reliability of VI pixel"
#>
#> $quality_bandnames
#> [1] "QA_qual" "QA_usef" "QA_aer" "QA_adj_cld" "QA_BRDF"
#> [6] "QA_mix_cld" "QA_land_wat" "QA_snow_ice" "QA_shd"
#>
#> $quality_fullnames
#> [1] "VI Quality"
#> [2] "VI usefulness"
#> [3] "Aerosol quantity"
#> [4] "Adjacent cloud detected"
#> [5] "Atmosphere BRDF correction performed"
#> [6] "Mixed Clouds"
#> [7] "Land/Water Flag"
#> [8] "Possible snow/ice"
#> [9] "Possible shadow"
#>
#> $indexes_bandnames
#> [1] "SR" "NDFI" "NDII7" "SAVI"
#>
#> $indexes_fullnames
#> [1] "Simple Ratio (NIR/Red)"
#> [2] "Flood Index (Red-SWIR2)/(Red+SWIR2)"
#> [3] "NDII7 (NIR-SWIR2)/(NIR+SWIR2)"
#> [4] "SAVI (NIR-Red)/(NIR+Red+0.5)*(1+0.5)"
#>
# Get indexes names of product M*13Q1 based on full name
MODIStsp_get_prodlayers("MCD43C4")$indexes_bandnames
#> [1] "NDVI" "EVI" "SR" "NDFI" "NDII6" "NDII7" "SAVI" "NDSI" "GNDVI"
#> [10] "RGRI" "GRVI"