[ferret_users] ploting error bar

["Yogesh K. Tiwari" <ktiwari@xxxxxxxxxxxxxxx>]

Hello Ferret Users,

Recently I solved a question related to error
bar. I have one more but very small peroblem.

(Script attacheed)

I am reading 12 error bar values from jan to
dec (just 12 numbers) and I have to plot this
on a time series curve...the script is
attached as follows.

I am making mistake , the ferret error is

#####
**ERROR: invalid command: illegal dimensions
for polygon coordinate(s) or values
polygon/thickness=1/col=4/nolab/over/over/coord=Z)
ERBx+ERBxbar*ERBwidth,ERBy+ERBerr_up*ERBybar
Command file, command group, or REPEAT
execution aborted
#####

Kindly help , what to change in the script

Thanks,

Yogesh
use "../AIRS_added_jan_dec_2003.cdf"

let error_bar={0.91,0.93,0.87,0.82,0.77,0.81,0.83,0.83,0.82,0.90,1.19,0.83}

let co2=ADDED_CO2_POINT[d=1]

let co2_ave = co2[x=-15:20@ave,l=1:12,y=20:30@ave]

!when erros are correlated

plot/vlimits=373:382/thickness=2/nolab co2_ave

go error_bars  polygon/thickness=1/col=4/nolab co2_ave, error

!frame/file=sahara_fig6_error_bar.gif

!##################