set mode ignore_errors

can region
use coads_climatology
let a = avet(sst)
shade a
shade a - sst[l=@ave]
shade a[l=1:3]
set region/l=3
shade a

can region
plot a[x=180]
plot a                     ! DELIBERATE ERROR
plot a[y=10s:10n@ave]

set region/x=90:120/y=-90:-80
shade a                    ! DELIBERATE ERROR

set region/@w
shade a
shade a[x=180]             ! DELIBERATE ERROR
let b = a[x=180:170w@min,l=1:3@sbx]
shade b

can region
let a = x[i=1:30,k=1:10] + t[l=1:10]
let b = x[i=1:30,k=1:10]
let c = avet(a)
plot b
plot/over c

set mode/last ignore_errors