GEOmap (version 2.1)

addTIX: Add Tic marks to map

Description

Add Tic marks to map

Usage

addTIX(lats, lons, PROJ = list(), PMAT = NULL, col = gray(0.7), TICS = c(1, 1), OUTER = TRUE, sides = c(1, 2, 3, 4))

Arguments

lats

Latitudes in Degrees

lons

Longitude in Degrees

PROJ

Map Projection list

PMAT

Perspective matrix conversion

col

color

TICS

tic labels

OUTER

logical

sides

sides, 1,2,3,4

Value

• Graphical Side Effects

Details

attempts to make correct default values

See Also

addLLXY

Examples

##########3  this program is run internally


PLOC=list(LON=c(137.008, 141.000),
LAT=c(34.000, 36.992),
x=c(137.008, 141.000),
y=c(34.000, 36.992))

PROJ = setPROJ(type=2, LAT0=mean(PLOC$y) , LON0=mean(PLOC$x) )

gxy = GLOB.XY(PLOC$LAT, PLOC$LON, PROJ)

PLAT =  pretty(PLOC$LAT)

PLAT = c(min(PLOC$LAT),PLAT[PLAT>min(PLOC$LAT)&PLAT<max(PLOC$LAT)],max(PLOC$LAT)) 

PLON  = pretty(PLOC$LON)

PLON = c(min(PLOC$LON), PLON[PLON>min(PLOC$LON)&PLON<max(PLOC$LON)], max(PLOC$LON))
     

plot(gxy$x, gxy$y,  asp=TRUE)

 addTIX(PLAT, PLON, PMAT=NULL, col='red', TICS=c(.1,.1), PROJ=PROJ)