t.avalanche.stats - GRASS GIS manual

NAME

t.avalanche.stats - Extract avalanche parameters from avalanches detected in Sentinel-1 imagery

KEYWORDS

temporal, imagery, satellite, Sentinel-1, avalanche, statistics

SYNOPSIS

t.avalanche.stats

t.avalanche.stats --help

t.avalanche.stats input=name [where=sql_query] elevation=name slope=name aspect=name output=name [valid_area_range=integer[,integer,...]] [--help] [--verbose] [--quiet] [--ui]

Flags:

--help: Print usage summary
--verbose: Verbose module output
--quiet: Quiet module output
--ui: Force launching GUI dialog

Parameters:

input=name [required]: Name of the input space time raster dataset
where=sql_query: WHERE conditions of SQL statement without 'where' keyword used in the temporal GIS framework; Example: start_time > '2001-01-01 12:30:00'
elevation=name [required]: Name of input elevation raster map
slope=name [required]: Topographic slope in degrees (0-90)
aspect=name [required]: Topographic aspect in degrees (-180-180) where 0 is North and -90 is West
output=name [required]: Path to output directory where Shape files with avalanches and avalanche parameters will be stored
valid_area_range=integer[,integer,...]: Valide range of avalanche size in m2; Default: 2000,200000

DESCRIPTION
EXAMPLES
SEE ALSO
AUTHOR

DESCRIPTION

t.avalanche.stats extracts avalanche parameters for avalanches detected in Sentinel-1 imagery.

Avalanche parameters are:

minimum, mean, and maximum elevation in avalanche polygon
minimum, mean, and maximum slope in avalanche polygon
minimum, mean, and maximum aspect in avalanche polygon
start and end time (reference image sensing time and current image sensing time)
relative orbit number
orbit direction
algorithm name

EXAMPLES

t.avalanche.stats input=SatSkred elevation=DTM_20m slope=DTM_20m_slope \
  aspect=DTM_20m_aspect --o --v

AUTHOR

Stefan Blumentrath

SOURCE CODE

Available at: t.avalanche.stats source code (history)

Accessed: Monday Sep 16 09:38:10 2024