[ncl-talk] adding legends to xy plot

[Adam Phillips]

Hi Tabish,
The data array that you are passing in is dimensioned 49 x49. I think you
want that to be dimensioned 2 x 49. Change this:
data = new((/49,49/),"float")
to this:
data = new((/2,49/),"float")

(If you do not do that you will get 49 labeled legend lines.)

If that doesn't solve your issue or if you have further questions please
respond to ncl-talk.
Adam


On Thu, Aug 27, 2015 at 9:54 AM, Tabish Ansari <tabishumaransari at gmail.com>
wrote:

> Hi
>
> I am using the following script:
>
> ​load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_code.ncl"
> load "$NCARG_ROOT/lib/ncarg/nclscripts/csm/gsn_csm.ncl"
>
> begin
>  a     = addfile ("consolidated_d04.nc","r")
>  wks   = gsn_open_wks ("x11","xy")                ; open workstation
>  res                  = True                     ; plot mods desired
>  res at tiMainString     = "PM2.5 at Mandir Marg"          ; add title
> res at xyLineColors      = (/"blue","red"/)          ; change line color
> res at xyDashPattern = 0               ; Make curves all solid
> res at xyLineThicknesses = (/2.0,2.0/)               ; make 2nd lines thicker
> res at pmLegendDisplayMode    = "Always"            ; turn on legend
> res at xyExplicitLegendLabels = (/"Sim.","Obs."/)         ; create explicit
> labels
>
> time = fspan(0, 48, 49)
> data = new((/49,49/),"float")
> PM25_sim = a->PM25(:,0,38,37)
> PM25_obs = asciiread("PM2_5_MM.txt",(/49/),"float")
> data(0,:)= PM25_sim
> data(1,:)= PM25_obs
>  plot  = gsn_csm_xy (wks,time,data,res) ; create plot
> end
>
>
> However, I ​
> ​am not getting the desired legend names.
>
> Please help me out
>
> Thanks a lot
>
> Tabish​
>
>
>
>
> Tabish U Ansari
> IBM Research India Laboratory
> New Delhi
>
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-- 
Adam Phillips
Associate Scientist,  Climate and Global Dynamics Laboratory, NCAR
www.cgd.ucar.edu/staff/asphilli/   303-497-1726

<http://www.cgd.ucar.edu/staff/asphilli>
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