[Plplot-devel] Re: cgm driver reasonably stable now

[Alan W. I. <ir...@be...>]

On Fri, 14 Dec 2001, Alan W. Irwin wrote:

> In non-familied mode, page 4 of x16c has red and rather fat contour lines
> rather than the expected thin, yellow contours.  In familied mode the colour
> is fine, but the contours are still fat in error.

N.B. Andrew privately reminded me that the contours of page 4 are supposed to
be wider.  You just cannot see it as well for the psc driver (which I was
comparing with) because the width scale there changes more gradually than
the cgm width scale.  Therefore, the cgm driver was doing the right thing
there.

>
> Also in non-familied mode, p. 6 of the pythondemos and tcldemos has a red
> grid rather than the expected yellow grid.  This error does not occur
> for familied mode.

I just checked, and Andrew's recent fix has solved *all* these mentioned
colour problems for the cgm driver.  Thus, as far as I am concerned it is
perfect. Thanks, Andrew!

In addition to cgm, there is one other vector graphics standard we should
probably support called SVG (Scalable Vector Graphics).  (I hasten to add
this is not something to consider for the current release, but probably
something we should do in the next 6 months or so.) SVG is a vector graphics
format that has recently been adopted as a W3C standard. There is tremendous
excitement about this format as the next big thing for web publishing
because it is XML based and because many kinds of graphics are smaller if
represented as vectors rather than bitmaps.  To see the maturity of static
SVG support already available in a free package, check out the batik
(http://xml.apache.org/batik/index.html) project.

Alan