Hi Jim, vectorField worked a treat - thanks!


On 28 September 2013 01:57, Jim Lemon <jim@bitwrit.com.au> wrote:

> On 09/28/2013 04:56 AM, Conor Ryan wrote:
>
>> I am trying to plot points on a map for each ship locations (lat/long),
>> where
>> each point is a line whose angle (degrees) denotes ships heading and whose
>> line length denotes it's speed. Unfortunately arrows(); p.arrows (sfsmisc)
>> and ms.arrows (TeachingDemos) require start and end coordinates but I only
>> have a single coordinate and an angle to work with. Can you suggest any
>> other packages or commands that might allow me to plot this?
>> Alternatively,
>> can anyone suggest a method of making 'angle' a vector quantity when using
>> the arrows function? Any advice would be much appreciated!
>>
>>  Hi Conor,
> Try the vector.field function (plotrix).
>
> Jim
>
>

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