[ncl-talk] Adding arrow head at the and of the polylines

[Xi Chang]

Hi Mary and NCL,

The script for the arrow-head can only work in the X and Y are in cartesian
coordinate. It did NOT work when *X is the latitude and Y is the height*
(hPa), the head of the vector is placed wrongly when I used "polylines"
function. Can you help me with this issue?

Best,

Chang





On Thu, May 11, 2017 at 3:42 PM, Mary Haley <haley at ucar.edu> wrote:

> Xi,
>
> I don't think we have any examples of this, but I typed "arrow polyline"
> in the search box of the NCL home page, and found this post by Arindam
> Chakraborty:
>
> https://www.ncl.ucar.edu/Support/talk_archives/2010/1344.html
>
> I've attached the arrow.ncl script that he included in that post. You
> should be able to run it as-is.
>
> --Mary
>
>
> On Wed, May 10, 2017 at 5:28 PM, Xi Chang <xi.chang01 at gmail.com> wrote:
>
>> Dear NCL,
>>
>> Is there any a function to add an arrow head to show the direction of a
>> line (using polylines)?
>> Thanks a lot,
>>
>> Best,
>> Xi
>>
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