How do I use Xmosaic's ISMAP flag with CERN httpd (Marcus Speh)
Date: 21 Jun 1993 09:03:02 +0000 (GMT)
From: (Marcus Speh)
Subject: How do I use Xmosaic's ISMAP flag with CERN httpd
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Organization: Deutsches Elektronen-Synchrotron, Hamburg, Germany.
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    I am currently writing the hypertext doc to a class library
which I want to be fully transparent for the public. Thus, I
prepared an image of the Class Inheritance Tree with neat
boxes. I thought I'd use the ISMAP feature [I have XMosaic v1.1
for SGI-Irix4d]: I followed your demo, i.e. I have a file which
<A HREF="./decodeMGLIB"><IMG SRC="MGLIB-all.gif" ISMAP>
and in the same dir a file
<A HREF="/decodeMGLIB?90,400">ISU</A>
<A HREF="/decodeMGLIB?180,299">MultiGrid</A>
Now, only if I accidentally hit the right coordinates,
(90,400) or (180,299), I get the wanted answer, written to files

respectively, while for other coordinates, I get the error:
**** HTAccess: socket or file number returned by obsolete
load routine!  **** HTAccess: Internal software error.
Please mail!
In his reply, Tony Sanders (
who contributed this feature said he did not even know the
CERN httpd supported it. Tony also writes:
  What Mosaic
  should be passing to the server for your example
  would be:

  GET /decode?xxx,yyy

  It's the job of the server to decode the xxx,yyy
  coords and translate that to some document.

  > these are the upper right corners of subimages

  I would imagine that you have to describe both corners,
  and I'll bet it's the upper-left and lower-right, not
  upper-right but that's just a guess.
Now, I dont know whether this quote helps, but maybe one or the
other wizard at CERN, or an XMosaic expert knows the answer.
  If that should be necessary: the files I am talking about above are
at at URL, or
<A HREF="">here</a>
(if you're reading this with WWW)
        <A HREF="">
marcus                                                  </a>