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Re: Printing a value from index array

From: Przemek Klosowski
Subject: Re: Printing a value from index array
Date: Tue, 24 Jul 2018 12:03:49 -0400
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.8.0

On 07/23/2018 11:07 AM, harish3679 wrote:

for this experiment

choice = menu("beverages"{"beer","whiskey","brandy","vodka"});

it asks me to select a number
[1] beer
[2] whiskey
[3] brandy
[4] vodka

when I enter a number it just displays the number and excludes the strings
like beer, whiskey. .

Can I use listdlg instead?

Yes, but listdlg() is not yet widely available--for instance, the latest Fedora version is 4.2.2 and it still doesn't have it.

As you indicated, menu() returns simply the menu sequence number---you have to keep track of the item yourself:

itemlist = {"Neutron", "Electron", "Quark", "Proton", "Neutrino"};
octave:10> menu('particle',itemlist)
  [ 1] Neutron
  [ 2] Electron
  [ 3] Quark
  [ 4] Proton
  [ 5] Neutrino

Select a number: 3
ans =  3
octave:11> disp(itemlist{3})

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