[ncl-talk] dynamic variable names

[Rick Brownrigg]

Hi Sebastian,

As you point out, it can't be done directly with variables and $..$
notation.  But it would work if your variables were made to be attributes
of some "hosting variable":

ncl 0> hostVar = True
ncl 1> hostVar at ALLindex = 3.14159
ncl 2> user_selection = "ALL"
ncl 3> dynvar = user_selection + "index"
ncl 4> var1 = hostVar@$dynvar$
ncl 5> print(var1)

Variable: var1
Type: float
Total Size: 4 bytes
            1 values
Number of Dimensions: 1
Dimensions and sizes:   [1]
Coordinates:
(0)     3.14159

I hope that helps...
Rick


On Thu, Feb 4, 2016 at 3:30 AM, Milinski, Sebastian <
sebastian.milinski at mpimet.mpg.de> wrote:

> Hi,
>
> I would like to access a variable. The name of the variable to be accessed
> is created from user input (string) and a suffix (string)
>
> user_selection = "ALL"
> dynvar          = user_selection + "index"
> var1                    = dynvar                                        ;
> <- here I do not want the string ALLindex but the content of ALLindex.
> print(var1)
>
>
> The syntax var1 = $dynvar$ does not work. Is there an easy way to do this
> without several if-statements?
>
> Thanks,
> Sebastian
>
>
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