R: Add Tic marks to map

addTIX {GEOmap} | R Documentation

## 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

### Details

attempts to make correct default values

### Value

Graphical Side Effects

### Author(s)

Jonathan M. Lees<jonathan.lees.edu>

### 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)

[Package GEOmap version 2.4-0 Index]