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Re: Button Problem

  • To: mathgroup at smc.vnet.net
  • Subject: [mg109284] Re: Button Problem
  • From: dh <dh at metrohm.com>
  • Date: Tue, 20 Apr 2010 05:52:11 -0400 (EDT)
  • References: <hqgued$6k1$1@smc.vnet.net>

On 19.04.2010 08:49, Gehrmann wrote:
> I am using Mathematica 7 to analyze a large data set and have written
> a program which runs successfully when invoked as follows:
>
> analyzer["C:\\mdtp\\Jim\\Data\\Data\\Field07Aout.txt", "abc", "All",
>    "All", "-9", "PT", "-9", "CC", "EQ", "1", "1", "No", "{1}"];
>
> However, I would like to create a button notebook which allows the
> user to change parameters and push a button once the desired
> parameters have been chosen.  I've tried the following statements:
>
> Get["C:\\mdtp\\currentparameters.txt"];  (*reads the same parameters
> used above from a file*)
>
> Button["Click Here to Produce Summary and Question Analyses",
>    analyzer[testnamex, sourcenm, specification, selecteddatnm,
>    posttestcorr, posttestnm, coursecorr, coursecorrnm, equator,
>    ToExpression[alph], ToExpression[bet], graffile, qtoshow]]
>
> which displays a button--on pushing the button the analyzer routine is
> invoked but doesn't complete--no error message is displayed.  I
> believe that this button approach is exceeding some time or memory
> limit but haven't been able to determine which in order to make the
> button invocation method work.  I would appreciate any help on this.
> Thanks.
>
Hi Gehrmann,
could it be that you forget to print the output?
Consider:
fun[x_] := 1/x;
Button["DoIt", fun[x]]
which displays nothing. However it works with the following change:
fun[x_] := 1/x;
Button["DoIt", Print@fun[x]]
Daniel

-- 

Daniel Huber
Metrohm Ltd.
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CH-9100 Herisau
Tel. +41 71 353 8585, Fax +41 71 353 8907
E-Mail:<mailto:dh at metrohm.com>
Internet:<http://www.metrohm.com>



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