! Tests of `var,RETURN=ISDEPTH`

define axis/units=meters/z=0:100:2 zup
let zz = z[gz=zup]
say `zz,return=isdep`

define axis/units=meters/z=0:200:2/depth zdn
let zz = z[gz=zdn]
say `zz,return=isdep`

use gtbc011
say `temp,return=isdepth`

use coads_climatology
say `sst,return=isdepth`

can data 2

cancel axis/depth `temp,return=zaxis`
say `temp,return=isdepth`

