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List:       gnuplot-info-beta
Subject:    html demos
From:       crawford richard <u600256 () gamma ! lanl ! gov>
Date:       1998-07-24 19:22:22
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Hi, all,

I'm forwarding an exchange I've had with Berthold Hoellmann for your
comments.

Dick Crawford, aka rccrawford@lanl.gov

=====================================================================

From: Berthold Hoellmann <se6y095@public.uni-hamburg.de>

crawford richard wrote:
> 
> Hi, Berthold,
> 
> Some time ago you wrote:
> 
> > The html version of the documentation uses some .gif's direcly from
> > 'http://www.nas.nasa.gov/~woo/gnuplot/'. Also all links to the examples
> > are leading to this site. This is very annoying if you use a dialup
> > conection to the WWW or have a very slow connection. I think the
> > distribution should include a file to produce the example pictures.
> > Including the pictures is not a good idea because of their seize.
> 
> I don't know why I didn't respond to this in a more timely fashion :-/
> 
> Actually command files for producing all the examples are included in
> the distribution -- in the "demos" subdirectory.  (At least I think all
> the examples are there ...)
> 
> I suppose I should put text references to these in the manual, instead of
> just the html pointers.
> 
> Or are you talking about something else?

Now the examples reachable are a little polished for html, but more
important they include gif's. I think the gif's are helpful. Also try
'gnuplot borders.dem'. Maybe a nice reread example, but hard to cancel
at least on my computer. I think a more verbose, lengthly example would
much more helpful. 

I was thining of enhancing the files in 'demo' by additional comments
like this:

##<GIF>set term gif
##<GIF>set out 'world1.gif'
##<PNG>set term gif
##<PNG>set out 'world1.png'
plot 'world.dat' with lines 3 4, 'world.cor' with points 1 2
##<HTML></pre>
##<HTML,GIF>will result in (gif mode)
##<HTML,GIF><IMG ALIGN=BOTTOM SRC=world1.gif>
##<HTML,PNG>will result in (png mode)
##<HTML,PNG><IMG ALIGN=BOTTOM SRC=world1.png>
##<HTML><pre>

to make it possible to stream edit the dem file. I should be possible to
produce the gifs and htmls from this. I like the idea to have only one
sourde for this. But I stopped it because of problems with portability.
First I'm not shure if I can rely on the existance of a stream editor on
all platforms. The second problem occured in 'vector.dem'. 'vector.dem'
contains some terminal swiches to term table and back to x11. This is of
course not portable. But the example bases on this. It would need a 'set
term default' like command.

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