Re: Can't assign value to symbols
- To: mathgroup at smc.vnet.net
- Subject: [mg58445] Re: Can't assign value to symbols
- From: Bill Rowe <readnewsciv at earthlink.net>
- Date: Sat, 2 Jul 2005 04:07:07 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
On 7/1/05 at 2:02 AM, leenewm at umich.edu (Lee Newman) wrote:
>Situation: I have a table that contains parameters and sets of
>values that I want to assign to the parameters for the purposes of
>running a simulation.
>- parameters = {{a,b,c},{1,2,3},{4,5,6},{7,8,9}}
>- want to assign values in a given row to the symbols listed in the
>first row.
>- tried using: MapThread[ #1 = #2 &, {parameters[[1]], parameters[[3]]} ]
>- fails with error "Tag Slot in #1 is Protected"
>- tried adding Unprotect[#1] and a variety of other attemps, but can't
>get it to work.
>Anyone know how might accomplish this?
Instead of
MapThread[#1 = #2&, {parameters[[1]], parameters[[3]]}]
use
MapThread[Set[#1,#2]&, {parameters[[1]], parameters[[3]]}]
I don't know why the second form works when the first form fails.
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