Re: Problem with variable indices

[Ansley Manke <Ansley.B.Manke@xxxxxxxx>]

Hi Michael,
Here is the syntax; note that these are the back-quotes,
also known as grave accent marks:

LET A = 1
LIST APS[I=`A`]

The topic you want to read up on in the Users Guide,
is immediate-mode evaluation.  See "immediate mode,
embedded expressions" in the index.   You want Ferret
to evaluate the variable A as the command line is read.

Ansley Manke


Michael Traub wrote:

> Dear Ferreters!
>
> I have got problems with variable indices:
> If I do:
>
> LIST APS[I=1]     --> I get the values
>
> But if I do:
>
> LET A=1; LIST APS[I=A] -->  **ERROR: command syntax: A
>
> What is the correct way to work with variable indices???
>
> Thanx
>
> Michael

--
Ansley Manke  Pacific Marine Environmental Laboratory  Seattle WA