.TH r.usler 1grass "" "GRASS 7.8.5" "GRASS GIS User's Manual"
.SH NAME
\fI\fBr.usler\fR\fR  \- Computes USLE R factor, Rainfall erosivity index.
.SH KEYWORDS
raster, hydrology, rainfall, soil, erosion
.SH SYNOPSIS
\fBr.usler\fR
.br
\fBr.usler \-\-help\fR
.br
\fBr.usler\fR \fBinput\fR=\fIname\fR \fBoutput\fR=\fIname\fR \fBmethod\fR=\fIstring\fR  [\-\-\fBoverwrite\fR]  [\-\-\fBhelp\fR]  [\-\-\fBverbose\fR]  [\-\-\fBquiet\fR]  [\-\-\fBui\fR]
.SS Flags:
.IP "\fB\-\-overwrite\fR" 4m
.br
Allow output files to overwrite existing files
.IP "\fB\-\-help\fR" 4m
.br
Print usage summary
.IP "\fB\-\-verbose\fR" 4m
.br
Verbose module output
.IP "\fB\-\-quiet\fR" 4m
.br
Quiet module output
.IP "\fB\-\-ui\fR" 4m
.br
Force launching GUI dialog
.SS Parameters:
.IP "\fBinput\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name of annual precipitation raster map [mm/year]
.IP "\fBoutput\fR=\fIname\fR \fB[required]\fR" 4m
.br
Name for output USLE R raster map [MJ.mm/ha.hr.year]
.IP "\fBmethod\fR=\fIstring\fR \fB[required]\fR" 4m
.br
Name of USLE R equation
.br
Options: \fIroose,  morgan,  foster,  elswaify\fR
.br
Default: \fImorgan\fR
.br
\fBroose\fR: Roosle (1975)
.br
\fBmorgan\fR: Morgan (1974)
.br
\fBfoster\fR: Foster (1981)
.br
\fBelswaify\fR: El\-Swaify (1985)
.SH DESCRIPTION
\fIr.usler\fR calculates USLE R factor for Rainfall erosivity. It
enables several empirical equations: Roosle (1975), Morgan (1974),
Foster(1981) and El\-Swaify (1985).
.SH NOTES
\fIr.watershed\fR provides for USLE L, S, LS factors.
.SH EXAMPLE
TBD.
.SH SEE ALSO
\fI
r.uslek,
r.watershed
\fR
.SH AUTHORS
Natialia Medvedeva, SIC\-ISDC, Ashgabat, Turkmenistan
.br
Yann Chemin, SIC\-ISDC, Ashgabat, Turkmenistan
.SH SOURCE CODE
.PP
Available at: r.usler source code (history)
.PP
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.PP
© 2003\-2020
GRASS Development Team,
GRASS GIS 7.8.5 Reference Manual