[ncl-talk] reference vector in weather_sym_9.ncl

[Mariangel Fedrizzi - NOAA Affiliate]

Thanks a lot, Mary!
I will try this approach and see how it works for my dataset.
It is great to know that a new release of NCL is coming up! NCL is great,
and you guys are the best in helping users.
Best regards,
Mariangel.

On Thu, Feb 16, 2017 at 11:02 AM, Mary Haley <haley at ucar.edu> wrote:

> Mariangel,
>
> Sorry for the delay in response. We are very busy trying to get a new
> release of NCL out the door.
>
> The problem is that these two pieces of code that generate the vector
> reference boxes are not related to each other, so I'm not sure what it's
> going to take to make them the same size.
>
> One work-around for now is to create two vector plots, one with the
> reference annotation box put in the lower left, and one in the lower
> right.  You can use vcRefAnnoXXXX resources to customize each of these
> boxes.
>
> You can then overlay the two plots and draw them as one.  See the attached
> script which will hopefully help you get started.
>
> --Mary
>
>
>
> On Mon, Feb 13, 2017 at 10:20 AM, Mariangel Fedrizzi - NOAA Affiliate <
> mariangel.fedrizzi at noaa.gov> wrote:
>
>> Hi All,
>>
>> I have not heard from anybody since last Thursday, so I'm sending more
>> info about my question in case that helps.
>>
>> In the figure below, I've used:
>>
>>   res at vcRefMagnitudeF         = 400.0             ; vec magnitude
>>   res at vcRefLengthF            = 0.04              ; size of ref vector
>>
>> to plot the black vectors, from a netcdf file, where I had values for all
>> lat lon grids. I used mainly the examples in
>> http://www.ncl.ucar.edu/Applications/polar.shtml to create that map.
>>
>> However, I had to overplot on that map vectors from a satellite pass
>> (white vectors on the plot), where I had an ascii file with lat, lon,
>> Veast, Vnorth. For that, I used:
>>
>>   wmsetp("vrs - size of reference vector in user space", 400.)
>>   wmsetp("vrn - size of reference vector on plot in NDC space", 0.07)
>>
>> following the example in http://www.ncl.ucar.edu/Applic
>> ations/Images/weather_sym_9_lg.png and http://www.ncl.ucar.edu/Applic
>> ations/Scripts/weather_sym_9.ncl.
>>
>> My question is how can I make the white vector with the same size and
>> label format (not scientific notation) as the black vector?
>>
>> I've used:
>>
>>  wmvectmap(wks, lat, lon,  Veast, Vnorth)  ; Plot vectors.
>>
>> to overplot the white vectors on the map. Is this the best procedure for
>> this case, or there are others that have more resources?
>>
>> Thanks,
>> Mariangel.
>>
>>
>>
>>
>>
>> [image: Inline image 1]
>>
>>
>>
>> On Thu, Feb 9, 2017 at 11:25 AM, Mariangel Fedrizzi - NOAA Affiliate <
>> mariangel.fedrizzi at noaa.gov> wrote:
>>
>>> Hi,
>>>
>>> I'm looking at the example http://www.ncl.ucar.edu/Applic
>>> ations/Scripts/weather_sym_9.ncl, and see that the reference vector in
>>> the label (http://www.ncl.ucar.edu/Applications/Images/weather_sym_9_l
>>> g.png) is 0.35E+02.
>>>
>>> Is there a way to set the reference vector in the label with the same
>>> value it is set in the script weather_sym_9.ncl, i.e. 40.0:
>>>
>>> wmsetp("vrs - size of reference vector in user space", 40.)
>>>
>>> Also, it there a way to change from scientific notation to float in the
>>> label box?
>>>
>>> Any suggestions on how to proceed?
>>>
>>> Thanks,
>>> Mariangel.
>>>
>>>
>>
>
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