Map Options File: g_map.tbl

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                                 MAP DETAILS
LL | DASH | INT | LB | LSZ | LQL | P | TTL | TSZ | TQL | OUT | DOT | LW   | SP
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A  | PB   | D   | M  | 12  | 00  | Y | Y   |  8  | 00  | PS  | N   | D    |
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                                  MAP COLORS
LL LINES | LABELS | TITLE  | STATES     | COUNTRIES   | CONTINENTS | PERIMETER
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1        | 1      |  1     | 1          | 1           | 1          |  1
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Description of variables in g_map.tbl: (Text is provided by Dr. Mark Stoelinga of University of Washington.)
 

LL	lat/lon lines over land only (L), water only (W), none (N), or both land and water (D, A, or E)
DASH	lat/lon lines are dashed large (L), medium (M), small (SM), tiny (T), solid (SO), publ. style (P), or default (D) [LL.ne.N]
INT	lat/lon grid interval in degrees, or D for default [LL.ne.N]
LB	M for only MAPDRV labels (lat/lon on perimeter), N for none, or D or A for both
LSZ	lat/lon label size, 1 to 25 [LB.ne.N]
LQL	label quality: [LB.ne.N] 00 - Complex characters / High quality 01 - Complex characters / Medium quality 02 - Complex characters / Low quality 10 - Duplex characters / High quality 11 - Duplex characters / Medium quality 12 - Duplex characters / Low quality D - Default = 11
P	draw just a line perimeter (N) or a line perimeter with ticks (Y) [DASH.ne.P.or.LL.eq.N]
TTL	title flag: read the next two title parameters (Y) or skip to outline parameter (N)
TSZ and TQL	the same as LSZ and LQL except they refer to the title [both TTL.eq.Y]
OUT	determines which geo-political outlines will be drawn: NO - no outlines CO - continental outlines only US - U.S. State outlines only PS - Continental + International + State outlines PO - Continental + International outlines
DOT	determines whether geopolitical boundaries will be dotted (Y) or solid (N) [OUT.ne.NO]
LW	gives the line width, in multiples of default (which is 1000 "units"). D gives default line width. [OUT.ne.NO.and.DOT.eq.N] (LW=2 would double the line width for geographic boundaries)
SP	gives dot spacing. Default (D) is 12 [OUT.ne.NO.and.DOT.eq.Y]

With each parameter is given a conditional statement. If that conditional statement is not met, then that particular box should be made blank. The most common error that occurs when the routine attempts to read this table is "Too many entries on line", which simply means that the routine expected a box to be blank, but it wasn't.

One can also do color filled maps. To do so, add the following in the g_map.tbl:

                              MAP FILL
WATER |           SIX COLOR INDICES WITH WHICH TO COLOR IN THE MAP
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1     |              2    |  2      |  2     |   2     |  2      |  2
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In this example, the water will be colored white, and land light gray according to the color table.