Re: Having problem with tangent calculation

Thank you so much for the reply. I used "doubletofloat" and it fixed
the problem but units are in "degrees_north".
So is it possible to convert the degrees_north to radians using any
function in NCL?

Thanks,
Soumik

On 2012-09-05 09:56, shea@ucar.edu wrote:
> This is a common issue that has been mentioned numerous times on
> ncl-talk.
>
> Speculation: variable is type double.
> lat = in->lat
> printVarSummary(lat)
>
> Speculation: variable 'tans' is type float.
> printVarSummary(tans)
>
> NCL does not allow a double to be placed into a variable of float.
> That is exactly what the error message is telling you.
>
> The right hand side is double, the left hand side is float.
> If it was reversed, NCL would not complain
>
> Perhaps above, you have defined
>
> tans = new ( nlat, "float") change that to "double"
>
> ---
>
>
> Actually, you need not decalre a 'new' variable
>
> lat = in->lat
> tans = tan(lat) ; automatically create an array named tans
>
> Also, please look at the units of 'lat'.
> If they are (say) 'degrees_north' then the above
> will not give the correct answer!!! *All* the trigonometric
> functions require *radians* as noted in the documentation.
>
>
>
>
>
>
>
>
>
>> Hi,
>>
>> I am trying to calculate term like tan(phi) where phi is the
>> latitude.
>> But when I am using the function "tan" it is giving me this error
>> message.
>>
>> fatal:Assignment type mismatch, right hand side can't be coerced to
>> type of left hand side
>>
>> I tried reading the lat from the model file and pass it to the
>> function
>> as an array.
>>
>> lat = in->lat
>>
>> do k = 0,nlat-1
>>
>> tans(k) = tan (lat(k))
>>
>> end do
>>
>> Can anybody please suggest what did I need to do make it work.
>>
>> Thanks,
>> Soumik
>>
>> --
>> "Numbing the pain for a while will make it worse when you finally
>> feel
>> it.
>> ~J.K. Rowling"
>> *****************************************
>> Soumik Basu
>> Graduate Student, Research Assistant
>> International Arctic Research Center
>> University of Alaska Fairbanks
>> Fairbanks,Alaska,USA
>> *****************************************
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>
>
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-- 
"Numbing the pain for a while will make it worse when you finally feel 
it.
  ~J.K. Rowling"
*****************************************
Soumik Basu
Graduate Student, Research Assistant
International Arctic Research Center
University of Alaska Fairbanks
Fairbanks,Alaska,USA
*****************************************
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