Re: color bar

From: H.Dang <danghy_at_nyahnyahspammersnyahnyah>
Date: Thu Aug 18 2011 - 10:59:34 MDT

Hi David,

Thanks a lot. The color bar is right now by adding one more values!

Cheers
Hongyan
2011/8/18 David Brown <dbrown@ucar.edu>

> Hi Hongyan,
>
> Your ispan expression only creates 19 values, but there are 20 boxes that
> you are trying to define in the color bar after the white color. Remember
> that there is always 1 more fill color than the number of contour levels.
> The purple color is retained from the default assignment of sequentially
> ascending colors starting from the beginning of the color map.
>
> As far as lines between the color boxes are concerned, the applicable
> resource for controlling their width is lbBoxLineThicknessF. However, there
> is a minimum width determined by the pixel size of the output device, so you
> may not see any difference even if you set lbBoxLineThicknessF to a very
> small value. The other option is to make the lines disappear completely by
> setting lbBoxLinesOn to False.
>
> On Aug 18, 2011, at 8:20 AM, H.Dang wrote:
>
> sorry, i missed a sentence. I mean the 237th color should be red, but I got
> dark purple.
>
> Thanks.
>
> On Thu, Aug 18, 2011 at 10:13 AM, H.Dang <danghy@gmail.com> wrote:
>
>> Good Morning!
>>
>> I got some new questions about color bar, please see my plot in the
>> attachment. I used the following setting:
>>
>> gsn_define_colormap(wks,"rainbow+white+gray")
>> ...
>> colors(7:) = ispan(165,237,4)
>>
>> res@lbBoxLineColor = "white"
>> res@lbFillLineThicknessF = "0.8"
>> res@lbLabelStride = 5
>> res@cnLevels = levels
>> res@cnFillColors = colors
>>
>> My question is: based on the color I choose, the 237th for
>> "rainbow+white+gray", but I got deep purple for label >19.5, I've tried 238
>> too, the same result.
>>
>> And how should I do to make the white interval between different colors
>> not so wide?
>>
>> Thank you.
>>
>> --
>> Cordially,
>> Hongyan(鸿雁)
>> Tel: 1-519-8884567ext36667
>>
>>
>>
>
>
> --
> Cordially,
> Hongyan(鸿雁)
> Tel: 1-519-8884567ext36667
>
>
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>
>

-- 
Cordially,
Hongyan(鸿雁)
Tel: 1-519-8884567ext36667

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Received on Thu Aug 18 11:00:13 2011

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