[ncl-talk] Wondering Why I Get This Error

[Barry Lynn]

So, then I need to convert 0.5 and 0.33 to byte values, I assume --
regarding my last question.

Thank you for clarifying.

On Fri, Sep 8, 2017 at 11:48 AM, Guido Cioni <guidocioni at gmail.com> wrote:

> dbz is byte type -> wrap_around thus is byte type.
>
> 256. will be a floating point variable. In fortran, and thus NCL, if you
> write 256 you will get an integer variable, 256. (with the point) a float
> variable.
>
> Thus when making wrap_around=256. you are forcing an assignment between
> byte and float type, which NCL cannot do without spitting out a warning or
> and error. Imagine if this would happen without noticing...it could lead to
> all sort of weird errors.
>
> You have to convert wrap_around to float (for example with the function
> tofloat) before attempting that.
> Cheers
>
> On 8. Sep 2017, at 10:11, Barry Lynn <barry.h.lynn at gmail.com> wrote:
>
> Hi:
>
> I have some simple code, copied below.
>
> I cannot add the value of 256 to dbz or the value of wrap_around after
> setting it to 256.
>
>   wrap_around = dbz
>
>   wrap_around = 256.
>
>
>   do j = 0,dims2d(0)-1
>
>   do i = 0,dims2d(1)-1
>
>   check = ismissing(dbz(j,i))
>
>    if (check.eq.False)then
>
>    if (dbz(j,i).lt.0)then
>
>     dbz(j,i) = dbz(j,i) + wrap_around(j,i)
>
>    end if
>
>    end if
>
>   end do
>
>   end do
>
> fatal:["NclVar.c":1390]:Assignment type mismatch, right hand side can't
> be coerced to type of left hand side
>
> fatal:["Execute.c":8575]:Execute: Error occurred at or near line 35 in
> file ./ra
> PrintVarSummary gives:
>
> Variable: dbz
>
> Type: byte
>
> Total Size: 480960 bytes
>
>             480960 values
>
> Number of Dimensions: 2
>
> Dimensions and sizes: [radialR | 360] x [gateR | 1336]
>
> Coordinates:
>
> Number Of Attributes: 14
>
>   units : dBz
>
>   long_name : Reflectivity
>
>   missing_value : 0
>
>   signal_below_threshold : 0
>
>   scale_factor : 0.5
>
>   add_offset : -33
>
>   _Unsigned : true
>
>   range_folding_threshold : 50
>
>   _CoordinateAxes : timeR elevationR azimuthR distanceR
>
>   scale_factor_metadata : 0.5
>
>   add_offset_metadata : -33
>
>   range_folded_value_packed : 1
>
>   range_folded_value : -32.5
>
>   _FillValue : 0
> --
> Barry H. Lynn, Ph.D
> Senior 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
> US 914 432 3108 <(914)%20432-3108>
> _______________________________________________
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>
>
>
> Guido Cioni
> http://guidocioni.altervista.org
>
>


-- 
Barry H. Lynn, Ph.D
Senior 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
US 914 432 3108
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