R: Tick marks for Square plot

sqrTICXY {GEOmap} | R Documentation

## Tick marks for Square plot

### Description

Lat-Lon Tick marks and grid for Square plot

### Usage

    sqrTICXY(prsurf, proj, side = c(1, 2, 3, 4), PMAT=NULL, LLgrid = TRUE,
     col = "black", colt = "black", font=5, cex=1, lty=2, lwd=1,
    pcex=1, TICS=NULL)

### Arguments

`prsurf` | list with x, y
`proj` | projection
`side` | vector, which sides to plot, 1=bottom, 2=left, 3=top, 4=right
`PMAT` | projection matrix from persp
`LLgrid` | logical, whether to add grid
`col` | color for grid
`colt` | color for text
`font` | default=2, font for labels
`cex` | character expansion for tic labels
`lty` | Line type for lines, default=2
`lwd` | Line width for lines, default=1
`pcex` | character expansion for tics, pch=2
`TICS` | list(lat, lon) this will replace the default

### Value

Graphical side effects

### Author(s)

Jonathan M. Lees<jonathan.lees@unc.edu>

### See Also

addLLXY, plotGEOmapXY

### Examples

     KAMlat = c(48.5,  65)
        KAMlon = c(150, 171)
        proj = setPROJ( 2, LAT0=mean(KAMlat) , LON0=mean(KAMlon) )
        PLOC=list(LON=KAMlon,LAT=KAMlat)

        PLON = seq(from=KAMlon[1], to=KAMlon[2], by=2)
        PLAT = seq(from=KAMlat[1], to=KAMlat[2], by=2)

        proj = setPROJ(2, LON0=mean(KAMlon), LAT0=mean(KAMlat))
    library(geomapdata)
    data(worldmap)

     plotGEOmapXY(worldmap, LIM=c(KAMlon[1], KAMlat[1], KAMlon[2], KAMlat[2]),
    PROJ =proj, axes=FALSE, xlab="", ylab="" )

    kbox = GLOB.XY( KAMlat,KAMlon, proj)
     sqrTICXY(kbox , proj, side=c(1,2,3,4), LLgrid=TRUE, col=grey(.7) )

    #############  more detailed map:
    data(kammap)

     plotGEOmapXY(kammap, LIM=c(KAMlon[1], KAMlat[1], KAMlon[2], KAMlat[2]),
    PROJ =proj, axes=FALSE, xlab="", ylab="" )

    kbox = GLOB.XY( KAMlat,KAMlon, proj)
     sqrTICXY(kbox , proj, side=c(1,2,3,4), LLgrid=TRUE, col=grey(.7) )

[Package GEOmap version 2.4-0 Index]