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# RE: [femm] Density plot colours and Lua

- To: "'femm@yahoogroups.com'" <femm@yahoogroups.com>
- Subject: RE: [femm] Density plot colours and Lua
- From: Mark Smith <mark.smith@linx.co.uk>
- Date: Tue, 6 May 2003 13:14:34 +0100

    If it is of any use I have a mathcad document which I put together which
    generates a nice RGB spectrum (like white light through a prism) I have used
    it to tune the R G & B components for FEA postprocessing etc. The number of
    levels is easily catered for it is in Mathcad 2000 format. If there is any
    interest I'll place it in the Yahoogroups files area.
    the following link might be of interest also
    http://www.cs.utah.edu/~bes/papers/color/

    regards
    Mark

    -----Original Message-----
    From: Keith Gregory [mailto:k.gregory@lboro.ac.uk]
    Sent: 06 May 2003 08:20
    To: femm@yahoogroups.com
    Subject: Re: [femm] Density plot colours and Lua

    Dave,

    I would agree that too many colours can look messy but a few more could be
    an improvement, the range at the moment is a bit too course. MEGA and
    Quickfield (I think) use 32 colours and the plots look great but it is
    difficult to differentiate between some of the mid range steps, so 16 or
    perhaps 24 colours might be worth trying.

    On another point Dave. I notice that Lua version 5 is released. Any plans
    to update?

    Keith.

    >There is no easy way for an end user to make the program use more than
    >12 different colors for the density plots.
    >
    >However, there is no fundamental reason that the program couldn't be
    >changed to use more colors--it would be relatively easy to change the
    >source so that there were, for example, 16 colors instead of 12. I
    >just thought that things looked too busy with a lot more colors. I
    >suppose that I could change the code so that there is more of a
    >continuous-looking distribution of colors if there is a really strong
    >feeling about it.
    >
    >Dave.

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