Add Tic marks to map
addTIX(lats, lons, PROJ = list(), PMAT = NULL, col = gray(0.7), TICS = c(1, 1), OUTER = TRUE, sides = c(1, 2, 3, 4))
lats
: Latitudes in Degreeslons
: Longitude in DegreesPROJ
: Map Projection listPMAT
: Perspective matrix conversioncol
: colorTICS
: tic labelsOUTER
: logicalsides
: sides, 1,2,3,4attempts to make correct default values
Graphical Side Effects
Jonathan M. Lees<jonathan.lees.edu>
addLLXY
##########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)
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