MODIStsp_vrt_create: Create MODIStsp virtual files
In lbusett/MODIStsp: Find, Download and Process MODIS Land Products Data

MODIStsp_vrt_create

R Documentation

Create MODIStsp virtual files

Description

Function used to create virtual files from time series of single-band files corresponding to different acquisition dates. The function takes as input the folder in which the single-band files are stored, and creates a ENVI Meta file and/or a GDAL vrt file that allows access to the full time series as if it was a single physical file. Created virtual files are stored in the "Time Series" subfolder of 'out_prod_folder“

Usage

MODIStsp_vrt_create(
  sensor,
  out_prod_folder,
  bandnames,
  bandsel,
  nodata_out,
  indexes_bandnames,
  indexes_bandsel,
  indexes_nodata_out,
  quality_bandnames,
  quality_bandsel,
  quality_nodata_out,
  file_prefixes,
  ts_format,
  out_format,
  verbose
)

Arguments

`sensor`	`character ["Terra"\| "Aqua" \| "Both"]` MODIS platform to be considered. (Ignored for MCD* products). Default: "Both"
`out_prod_folder`	`character` Main output folder.
`bandnames`	names of all layers available for the product being processed
`bandsel`	`⁠character array⁠` Original MODIS layers to be processed. You can get a list of available layers for a given product using function `MODIStsp_get_prodlayers` (e.g., MODIStsp_get_prodlayers("M*D13Q1")$bandnames), Default: NULL
`nodata_out`	`numeric` Output nodata value to be used in vrt files
`indexes_bandnames`	names of all indexes available for the product being processed
`indexes_bandsel`	`⁠character array⁠`Spectral Indexes to be computed starting from reflectance bands. You can get a list of available quality layers for a given product using function `MODIStsp_get_prodlayers` (e.g., MODIStsp_get_prodlayers("M*D13Q1")$indexes_bandnames), Default: NULL
`indexes_nodata_out`	nodata value for indexes vrts
`quality_bandnames`	names of all quality indicators available for the product being processed
`quality_bandsel`	`⁠character array⁠` Quality Indicators to be computed starting from bit fields of original MODIS layers. You can get a list of available quality layers for a given product using function `MODIStsp_get_prodlayers` (e.g., MODIStsp_get_prodlayers("M*D13Q1")$quality_bandnames), Default: NULL
`quality_nodata_out`	nodata value for quality vrts
`file_prefixes`	`⁠character array (2)⁠` file_prefixes for TERRA and AQUA - used to identify the files corresponding to each sensor
`ts_format`	`character ["ENVI" \| "GDAL" \| "Both"]` Required output format for virtual file.
`out_format`	`character ["ENVI" \| "GTiff"]` Format of images used as "input" for the vrt and contained in out_prod_folder/band folders.
`verbose`	`logical` If FALSE, suppress processing messages, Default: TRUE