Re: Two legends for Four lines ?

Mary,

Thanks for writing the script. I will adapt it for my code.

Helen.

On Nov 17, 2011, at 10:44 AM, Mary Haley wrote:

> Helen,
>
> Please see example 13 on the legend page:
>
> http://www.ncl.ucar.edu/Applications/legend.shtml#ex13
>
> This example is probably a bit of overkill for what you need,
> for it tries to recreate an XY legend from scratch.
>
> Note that this XY plot has four curves, but I only created
> two legend items. See the "NumberLegendItems"
> attribute in this code.
>
> --Mary
>
> On Nov 17, 2011, at 6:16 AM, Helen Parish wrote:
>
>> Does anyone know if there is a way to plot legends for only some of
>> the lines on a plot ?. I have four lines in the example below, which
>> shows a section of the NCL code. I want to put legends on the plot
>> for
>> only two of these lines. For the other two lines I do not want any
>> part of the legend to appear. I tried just putting "" for one of the
>> legend labels I did not want, which removed the writing, but still
>> left a colored line for the legend. I also tried omitting the fourth
>> label in the ExplicitLegendLabels assignment, but this still left a
>> colored line and put rubbish in the written part of the legend.
>>
>> Is there a way to create legends for just 2 of the 4 lines ?.
>>
>> Thanks,
>> Helen.
>>
>>
>>
>> Below is an excerpt from the routine :
>>
>>
>> res@xyLineColors =
>> (/"black","blue","red","red"/) ; change line colour
>>
>> res@xyDashPatterns = (/0,1,2,2/) ;
>> choose dash patterns
>>
>> res@xyLineThicknesses = (/1.0,2.0,2.0,2.0/) ;
>> make 2nd, 3rd, 4th lines thicker
>>
>> ; add a legend
>> res@pmLegendDisplayMode = "Always" ; turn on legend
>>
>> res@pmLegendSide = "Top" ; Change location
>> of
>> res@pmLegendParallelPosF = .80 ; move units right
>> res@pmLegendOrthogonalPosF = -0.275 ; more neg = down
>>
>> res@pmLegendWidthF = 0.12 ; Change width and
>> res@pmLegendHeightF = 0.10 ; height of
>> legend.
>> res@lgLabelFontHeightF = .02 ; change font
>> height
>> res@lgPerimOn = False ; no box around
>> ; labels for the legend
>> res@xyExplicitLegendLabels = (/"","Mean","Standard deviation"/)
>>
>> plot = gsn_csm_xy (wks,x,y,res) ; create plot
>>
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Received on Fri Nov 18 05:01:14 2011