[ferret_users] overlaying plots with regridded time axis

[Arpita Shetty <arpitashettyn@xxxxxxxxx>]

Hello ferret users,

I have SST data for 12 years from 1998 to 2009. I need to extract data
for the month of may from each of these years and plot them for
comparison.

This is what i tried:

define axis/t/t=1-may:31-may:1/units=days myt

let sst1=sst[x=@ave,y=@ave,t=1-may-1998:31-may-1998]
let sst2=sst[x=@ave,y=@ave,t=1-may-1999:31-may-1999]

!regridding to myt axis & eliminating shift of data due to @mod transformation
let sst1n=sst1[gt=myt@asn]
let sst2n=sst2[gt=myt@asn]

plot/vlim=28.5:31.5 sst1n[gt=myt@mod]
plot/vlim=28.5:31.5/ov sst2n[gt=myt@mod]

The problem is, this works perfectly for variable sst1. But the
corresponding values for sst2 and so on are marked as zero.

Could you pls help me out with this?