[ncl-talk] Some issue with plot

[Mary Haley]

Anahita,

You are calling gsn_csm_xy2 two times with the exact same arguments, so it
doesn't surprise me that you have two identical plots:

plot  = gsn_csm_xy2 (wks,aa,ams_alt,qcls_co2,resL,resR) ; create plot
plot  = gsn_csm_xy2 (wks,aa,ams_alt,qcls_co2,resL,resR)

This function is explicitly for allowing you to plot two Y curves that have
different axes, but share the same X data, so one call is all you need:

plot  = gsn_csm_xy2 (wks,aa,ams_alt,qcls_co2,resL,resR) ; create plot

If the plot that you're getting is not what you expected, then email
ncl-talk again and provide more detail on what you want.

Thanks,


--Mary



On Tue, Nov 13, 2018 at 12:38 PM, Anahita Amiri Farahani <aamir003 at ucr.edu>
wrote:

> Dear All,
>
> I used *gsn_csm_xy2*
> <https://www.ncl.ucar.edu/Document/Graphics/Interfaces/gsn_csm_xy2.shtml> to
> draw two lines each with their own separate Y-axis, but it gives me two
> identecal plots. Here is the code and Attached is the plot:
>
>
> ;************************************************
> wks   = gsn_open_wks ("eps","time_vs_alt")               ; send graphics
> to PNG file
>
> resL                  = True                     ; plot mods desired
> resL at tiMainString     = "Altitide vs. Time"          ; add title
>
> resR                        = True
> resR at xyLineColors      = "blue"                   ; line color
>
> plot  = gsn_csm_xy2 (wks,aa,ams_alt,qcls_co2,resL,resR) ; create plot
> plot  = gsn_csm_xy2 (wks,aa,ams_alt,qcls_co2,resL,resR)
> delete(wks)
>
>
>
> Thanks,
> Ana
>
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