NAME

v.bubble - Creates a vector file which consists of bubble(s) for each point in a site-file and with a size relative to the z value of that point.
(GRASS Vector Program)

SYNOPSIS

v.bubble
v.bubble help
v.bubble [ -s] [radius=value] sitefile=name output=name field=value

DESCRIPTION

"v.bubble" will create "polygon" circles or bubbles around points read from an existing "site_lists" file. The "site_lists" points will be the centers for those bubbles with one bubble created per point. The size of the bubble is relative to the z value (or "height" attribute") at that point. The maximum z value corresponds to a size of "radius". The "polygon" bubbles will be written to a binary vector file. Each "polygon" bubble will have 361 points with each point on the circumference of the bubble representing 1 degree of arc.

COMMAND LINE OPTIONS

Parameters

radius
Maximum radius corresponding with the maximum z value in the "site-file". One Unit of radius corresponds with one unit of the map.
default: 1.0

sitefile
GRASS site_lists file (input).
output
Vector file to be created (output).

field
Attribute field number to use for operation

The field number specifies the attribute field in sites list (point map) which shall be used. This is useful in case of multiple attribute sites maps.

Flags

-s
Automatically run "v.support" on newly created vector file.

NOTES

The programm is based on v.circle

SEE ALSO

v.circle

AUTHOR

Job Spijker (spijker@geo.uu.nl) , Utrecht University/Department of Geochemistry