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RE: [Groff] Surface Integral in eqn
From: |
Ted Harding |
Subject: |
RE: [Groff] Surface Integral in eqn |
Date: |
Wed, 17 Aug 2005 14:53:11 +0100 (BST) |
On 11-Aug-05 Frank Jahnke wrote:
> Although I'm pretty proficient at eqn, I've never figured out how one
> makes the symbol for a surface integral. This looks like a regular
> integral, but it has an open circle in the middle of it. How might I
> do
> so? Thanks in advance!
>
> Frank
This is a quick reply -- there's a better approach (using the
'special' command in eqn) but it would take me a little longer
to work out details.
Try the following, or some variant of it:
.EQ
sdefine Sint %{type "operator" vcenter \
size +10 {"\Z'\h'0.04n'\v'-0.8n'\D'c 0.5n''\[is]"}}%
.EN
or put the material between ".EQ" and ".EN" in your .../tmac/eqnrc
file.
Example (with the above already defined):
.EQ I
Sint sub S f(x) ~ dS
.EN
Hoping this helps,
Best wishes,
Ted.
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Date: 17-Aug-05 Time: 14:53:08
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