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NAME

r.hypso - Outputs a hypsometric and hypsographic graph.

KEYWORDS

raster

SYNOPSIS

r.hypso
r.hypso --help
r.hypso [-ab] map=name image=image [--overwrite] [--help] [--verbose] [--quiet] [--ui]

Flags:

-a
Generate hypsometric curve
-b
Generate hypsographic curve
--overwrite
Allow output files to overwrite existing files
--help
Print usage summary
--verbose
Verbose module output
--quiet
Quiet module output
--ui
Force launching GUI dialog

Parameters:

map=name [required]
Name of input elevation raster map
image=image [required]
Name for output graph file (png)

Table of contents

DESCRIPTION

r.hypso produces the hypsometric and hypsographic curve related to a digital elevation model and prints the percentiles.

NOTES

The hypsographic curve gives the distribution of surfaces in different altitude ranges. Each point on the function reports on the y-axis the elevation and on the x-axis the portion of the basin surface placed above such elevation value. The hypsometric curve uses adimensional axes.

Flags:

-a: generates hypsometric curve

-b: generates hyposographic curve

EXAMPLE

r.hypso -b map=elevation image=/tmp/hypso
generates hypsographic curve, and 
r.hypso -a map=elevation image=/tmp/hypso
generates hypsometric curve.

Dependencies

SEE ALSO

r.basin,

REFERENCES

Rodriguez-Iturbe I., Rinaldo A. — Fractal River Basins, Chance and Self-Organization. Cambridge Press (2001)

In Italian: Di Leo M., Di Stefano M., Claps P., Sole A. — Caratterizzazione morfometrica del bacino idrografico in GRASS GIS (Morphometric characterization of the catchment in GRASS GIS environment), Geomatics Workbooks, n. 9 (2010)

AUTHORS

Margherita Di Leo (grass-dev AT lists DOT osgeo DOT org), Massimo Di Stefano, Francesco Di Stefano

SOURCE CODE

Available at: r.hypso source code (history)

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© 2003-2020 GRASS Development Team, GRASS GIS 7.8.3dev Reference Manual