GEMPAK Manual |
Programs | Parameters
BND
BND specifies the parameters needed for processing bounds areas:
name[|tag]/color/fillsiz/fillpat/filt/minpts !
lincol/linpat/linwid !
mrksym/col/typ/siz/wid
FILLING BOUNDS AREAS:
name - If name is "BG", then the entire background area in plot coordinates
if filled with the given color, pattern, etc.
tag - The tag option allows specification of a precise subarea to fill, e.g.,
fill a particular state instead of filling all the states. See examples.
color - Additional help for color is available in COLORS.
fillsiz, fillpat - The fill size is not yet implemented, however the fill
pattern may be set to 1 (solid), 2 (slanted dash) or 3 (slanted line).
filt - The filter value is used to reduce the number of points used to draw
the bound areas. Valid values for the filter flag are between 0 and 1.
The default is 0.
minpts - The minpts variable allows plotting of only bounds with a number
of points greater than a certain value, thus eliminating numerous small
areas, such as islands. The overall effect is to increase performance.
Care must be taken, however, since some large geographic areas may be
described with just a few points (e.g., the state of Wyoming). Usually,
a value of 100 or 200 will suffice.
OUTLINING BOUNDS AREAS:
lincol - Color of bound outline. Additional help for color is available
in COLORS.
linpat - Outline line pattern.
linwid - Outline line width.
Note that filt and minpts also apply to outlining.
PLOTTING A MARKER OR WEATHER SYMBOL AT BOUNDS CENTROID:
mrksym - Either "MARK" or "WTHR" to plot either a marker or weather symbol.
col - Color of marker or symbol. Additional help for color is available
in COLORS.
typ - Marker or weather symbol type (number).
siz, wid - Marker or symbol size and width.
NOTE: any or all plot options may be requested at the same time.
The attributes for multiple bounds may be set by separating the settings
for each bound with a plus sign (+).
Examples:
BND = bg/4 + state_bnds/23 + lakes/4
BND = state_bnds/23 + great_lakes/4
BND = state_bnds|FL/23
- fills only the state of Florida
BND = state_bnds|FL/23 ! 2/2/5
- fills only the state of Florida and outlines the
state of Florida with a dashed red line of
width 5.
BND = state_bnds|FL/23 ! 2/2/5 ! wthr/3/65/5/3
- fills only the state of Florida and outlines the
state of Florida with a dashed red line of
width 5. Also plots a weather symbol at the
centroid of the state of Florida. This symbol
is a green heavy rain symbol of size 5 and
width 3.