Re: j instead of I
- To: mathgroup at smc.vnet.net
- Subject: [mg34630] Re: [mg34397] j instead of I
- From: Omega Consulting <omega_consulting at yahoo.com>
- Date: Thu, 30 May 2002 02:55:14 -0400 (EDT)
- Sender: owner-wri-mathgroup at wolfram.com
At 02:50 AM 5/18/2002, Oliver Friedrich wrote:
>Hallo,
>
>doing some electrical engineering, I would like to have the symbol
>j=sqrt(-1) instead of the I. What's the best way to do this permanent, so
>each time Mathematica starts it is done already?
>
>Oliver Friedrich
This can be accomplished by creating an autoload package. This is a
Mathematica package (*.m) placed in one of several possible locations. The
following command gives a list
In[1]:=
Map[ToFileName[#, "init.m"] &, {
{$TopDirectory, "AddOns", "Autoload", "*", "Kernel"},
{$PreferencesDirectory, "AddOns", "Autoload", "*", "Kernel"},
{$TopDirectory, "Configuration", "Kernel"}
}]
where * represents any directory name. So you can create as many autoload
packages as you want. In your package, you want the commands formatted in
InputForm. So for you, the init.m should look like
j=Sqrt[-1]
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