[ncl-talk] Disappearing Dots (Revisited)

[Barry Lynn]

Hi:

I have a bit of a mystery:

I have a loop where I am calling gsn_add_polymarker. I created an array
(dum_b(n_calls)) so I could plot the markers within the loop.

dum_b(i) = gsn_add_polymarker(wks,plot,lon_old(i),lat_old(i),mkres)


However, when I call:


array(i) = arrow(wks,plot,xpts,ypts,mkres)


I am not able to make the lines with the arrows (more than once).


warning:TransformPostDraw: tfPolyDrawList element 1 is invalid


Yet, if I call the same with


arr_0 = arrow...


arr_1 = arrow...


up to n_calls, I have no problem.


If someone can solve the mystery, I would be curious to find out the reason
for this "strange" behavior.


https://www.ncl.ucar.edu/Support/talk_archives/2010/att-1344/arrow.ncl

On Mon, Jul 8, 2019 at 12:13 PM Barry Lynn <barry.h.lynn at gmail.com> wrote:

> Hi:
>
> That was absolutely the correct solution -- thank you.
>
> Are you aware of a way to increase the spacing between maps?  I am using
> wrf resources so this is very obtuse.
>
> Barry
>
> On Mon, Jul 8, 2019 at 10:44 AM Rashed Mahmood <rashidcomsis at gmail.com>
> wrote:
>
>> Hi Barry,
>> A quick look suggests that it may be related to not specifying unique ids
>> for markid and textid:
>>     markid = gsn_add_polymarker(wks,plots(0),lon,lat,mkres)
>>     textid = gsn_add_text(wks,plots(0),cities,lon,lat,txres)
>>
>> Next lines should have,
>> markid*1 *= gsn_add_polymarker(wks,plots(0),lon,lat,mkres)
>> textid*1* = gsn_add_text(wks,plots(0),cities,lon,lat,txres)
>>
>> and so on...
>>
>> Cheers
>>
>> Rashed
>>
>>
>> On Mon, Jul 8, 2019 at 7:51 AM Barry Lynn via ncl-talk <ncl-talk at ucar.edu>
>> wrote:
>>
>>> Hello:
>>>
>>> For some reason, the markid only appears on the last graph, but not the
>>> first two.  Yet, the "call" to each is the same.  I had this problem in
>>> other programs I wrote.
>>>
>>> If you have a suggestion, thank you,
>>>
>>> Barry
>>> --
>>> Barry H. Lynn, Ph.D
>>> Senior Associate Scientist, Lecturer,
>>> The Institute of the Earth Science,
>>> The Hebrew University of Jerusalem,
>>> Givat Ram, Jerusalem 91904, Israel
>>> Tel: 972 547 231 170
>>> Fax: (972)-25662581
>>>
>>> C.E.O, Weather It Is, LTD
>>> Weather and Climate Focus
>>> http://weather-it-is.com
>>> Jerusalem, Israel
>>> Local: 02 930 9525
>>> Cell: 054 7 231 170
>>> Int-IS: x972 2 930 9525
>>>
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>>
>>
>
> --
> Barry H. Lynn, Ph.D
> Senior Associate Scientist, Lecturer,
> The Institute of the Earth Science,
> The Hebrew University of Jerusalem,
> Givat Ram, Jerusalem 91904, Israel
> Tel: 972 547 231 170
> Fax: (972)-25662581
>
> C.E.O, Weather It Is, LTD
> Weather and Climate Focus
> http://weather-it-is.com
> Jerusalem, Israel
> Local: 02 930 9525
> Cell: 054 7 231 170
> Int-IS: x972 2 930 9525
>
>

-- 
Barry H. Lynn, Ph.D
Senior Associate Scientist, Lecturer,
The Institute of the Earth Science,
The Hebrew University of Jerusalem,
Givat Ram, Jerusalem 91904, Israel
Tel: 972 547 231 170
Fax: (972)-25662581

C.E.O, Weather It Is, LTD
Weather and Climate Focus
http://weather-it-is.com
Jerusalem, Israel
Local: 02 930 9525
Cell: 054 7 231 170
Int-IS: x972 2 930 9525
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