! /GRAT, /HGRAT and /VGRAT to set graticule lines
! ACM March 12, 2004
! ACM 4/2005 set mode meta to save one of the plots for the metafile checks.
!            and cancel mode logo, so that .plt files are comparable.

ppl axnmtc,2,2

 ! GRAT on plot commands
PLOT/grat/i=1:100 sin(i/5)
let a = sin(i/5) * cos(j/8)
CONTOUR/color=ligh/grat=(color=red)/i=1:100/j=1:80 a
use coads_climatology
SHADE/grat=(color=white) sst[L=1]
FILL/grat=dash sst[l=1]
VECTOR/color=red/grat=(blue,dash) sst[l=1], sst[l=2]
let b = {1,2,1} 
let c = {2,1,0.5}
POLYGON/thick/color=red/pal=blue/grat b,c

! More complex GRAT arguments
plot/grat="large(dash),small(dash,color=blue)"/i=1:100 sin(i/5)
contour/color=ligh/grat="large(color=purple,thick=3,line),small(dash,color=blue)"/i=1:100/j=1:80 a
shade/grat="small(color=lightblue),large(thick,color=lightblue)" sst[l=1]
fill/i=1:50/j=1:30/grat="large(line),small(dash,color=lightblue)" i+j
poly/thi/col=red/pal=blue/grat="lar(col=pur,thi=3,lin),sma(dash,col=whi)" b,c
vector/i=1:50/j=1:30/grat="small(color=black),large(thick,color=blue)"  sst[l=1], sst[l=2]

! /HGRAT and /VGRAT
plot/vg=large(line,color=red),small(dash,color=blue)/i=1:100 sin(i/5)
plot/hg=small(color=red,dash),large(color=blue,line,thick)/i=1:100 sin(i/5)
plot/hg=small(color=red,dash,thick=1),large(color=blue,line,thick=3)/vg=large(line,color=red),small(dash,color=blue)/i=1:100 sin(i/5)

! Log axes: VLOG and HLOG with large and small tics

set mode meta graticules.plt
can mode logo 

set view left
def axis/z zlog=exp(k[k=1:10])
let fcn = k[gz=zlog]
plot/vlog/vlimits=1:100000/grat="large(color=black),small(color=lightblue)" fcn

set view right
def axis/z/depth dlog=exp(k[k=1:20])
let fcn = k[gz=dlog]
plot/vlog/vlimits=1:100000/hg="large(color=red),small(color=lightblue)" fcn

can mode meta
set mode logo

can view

! HLOG and VLOG

def axis/x ddlog = exp(-1*(10-i[i=1:10]))
let fcn = (i[gx=ddlog])^2
plot/thick/hlog/vlog/grat="large(color=red),small=(color=lightblue)" fcn

! Time axes
let a = sin(t[gt=tax]/5)
let b = sin(t[gt=tax]/100)

def axis/t=1-jan-1990:1-jan-1998:1/units=months tax

plot/t=1-jan-1990:31-dec-1992/trans/hg="large(dash,color=blue),small(line,color=lightblue)"/vg="(line,color=blue)" a

def axis/t=1-jan-1990:1-mar-1990:1/units=days tax
plot/hg="(line,color=blue)"/vg="large(line,color=blue),small(line,color=lightblue)" a
plot/trans/vg="(line,color=blue)"/hg="large(line,color=blue),small(line,color=lightblue)" a

def axis/t=1-jan-1950:1-jan-1990:1/units=years tax
plot/hg="(line,color=blue)"/vg="large(line,color=blue),small(line,color=lightblue)" a
plot/trans/vg="(line,color=blue)"/hg="large(line,color=blue),small(line,color=lightblue)" a

def axis/t=1-jan-1800:1-jan-1990:1/units=years tax
plot/thick/trans/grat="(line,color=blue)" a

def axis/t="1-jan-1990:01":"2-jan-1990:12:00":1/units=minutes tax
plot/thick/grat="large(line,color=blue),small(line,color=lightblue)" b
plot/trans/thick/vg="(line,color=blue)"/hg="large(line,color=blue),small(line,color=lightblue)" b

! Tests for MODE GRATICULE  added in Ferret v5.7
show mode graticule
set mode graticule
show mode graticule

PLOT/i=1:100 sin(i/5)
can mode graticule

PLOT/i=1:100 cos(i/5)

set mode graticule:color=red
PLOT/i=1:100 cos(i/5)
set mode graticule:(thick,color=red)
PLOT/i=1:100 cos(i/5)

set mode graticule:(dash,color=blue)
PLOT/i=1:100 cos(i/5)
can mode graticule

pplus/reset   ! restore tics etc

