[ncl-talk] Printing the +- sign on a plot in NCL

[Tabish Ansari]

Dear Ehsan and Dave,

Many thanks for your replies. I managed to get the desired output by using
"~F34~1~F21~" inside the string.

best regards,

Tabish

--------------------------------------------------------------------------------------
Dr Tabish Ansari
Research Associate
Air Quality Modelling Group
Research Institute for Sustainability (RIFS) - Helmholtz Centre Potsdam
Potsdam, Germany


On Mon, 1 Sept 2025 at 22:14, Dave Allured - NOAA Affiliate <
dave.allured at noaa.gov> wrote:

> Tabish, NCL uses font tables for special symbols.
> https://www.ncl.ucar.edu/Document/Graphics/font_tables.shtml
>
> There are two different plus/minus signs in the math symbol tables.  I did
> not look in the other tables.  Symbols are added to plot strings with the
> documented encoding method.  Try this NCL example.  Change one line as
> follows, to show the two different plus/minus symbols.
> https://www.ncl.ucar.edu/Applications/Scripts/eqn_5.ncl
>
> eqn2 = "Table 18 selector 'S' is :F18:S:F: symbol:C:" \
>          + "Table 34 selector '1' is :F34:1:F: symbol"
>
>
> On Mon, Sep 1, 2025 at 11:04 AM Tabish Ansari via ncl-talk <
> ncl-talk at mailman.ucar.edu> wrote:
>
>> Dear NCL folks,
>>
>> I'm posting here after a long time, partly because I've gotten better at
>> using NCL over the years and partly because nowadays the AI LLMs are able
>> to answer most of my queries on NCL and solve the errors. However, I
>> finally have a question at which all the LLMs failed: How do I print the +-
>> sign (+ on top of -) in an NCL plot? What's the appropriate function code
>> to use inside the string?
>>
>> Thank you very much in advance!
>>
>> best regards,
>> Tabish
>>
>> --------------------------------------------------------------------------------------
>> Dr Tabish Ansari
>> Research Associate
>> Air Quality Modelling Group
>> Research Institute for Sustainability (RIFS) - Helmholtz Centre Potsdam
>> Potsdam, Germany
>>
>
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