color filled contour map 2 - 段彩で等深線を強調する 

  使うコマンド  makecpt, grdimage, grdcontour, pscoast,  psbasemap



bash スクリプト例
#  plot bathymetry color fill map

# parameter setting
region=130/145/25/35                    # map region east/west/south/north
proj=M10                                # map projection and scale
ticks=a5f1g5                            # boundary tick info
frame=WSne+tcolor_fill                     # boundary frame info
climit=-10000/0/500                  # color table min/max/interval
cint=500                                # contour interval
limit=-10000/-500                       # contour min/max
aint=2000                               # annotation contour interval
grdfile=JTOPO1_30.grd                   # input bathymetry grid file
cptfile=gray_step.cpt                  # color table
psfile=colfilcnt2.ps                  # output postscript file name
#
# making color table
gmt makecpt -Cgray -T$climit -V > $cptfile
#
# plot
gmt grdimage $grdfile -R$region -J$proj -C$cptfile -K -V > $psfile
gmt grdcontour $grdfile -R$region -J$proj -C$cint -A$aint -L$limit -K -O >> $psfile
gmt pscoast -R$region -J$proj -Di -Ggray -Wthin,black -K -V -O >> $psfile
gmt psbasemap -R$region -J$proj -B$ticks -B$frame -O  -V >> $psfile
#



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