[Blindmath] Drawing a family tree

[Richard Baldwin]

Hi Sharon,

Well, it isn't always upside down, but probably more often than not the
most distant ancestor (the root) is shown at the top and the leaves (the
youngest family members) are shown at the bottom.

This is also typically true when we draw "tree structures" such as a binary
tree in programming classes.

However, in the typical tree structure showing folders and files on the
disk on your computer, the root is at the upper left and the tree grows
toward the right and down with the leaves (files) being at the right.

Dick Baldwin

On Mon, Jan 30, 2012 at 2:30 PM, Sharon Clark
<sharonjackson03 at comcast.net>wrote:

> Dick,
>
> Thanks for this explaination. I never realized that the family tree is
> opposite of a real one.
>
> Sharon
>
> -----Original Message-----
> From: blindmath-bounces at nfbnet.org [mailto:blindmath-bounces at nfbnet.org]
> On
> Behalf Of Richard Baldwin
> Sent: Monday, January 30, 2012 12:31 PM
> To: Blind Math list for those interested in mathematics
> Subject: Re: [Blindmath] Drawing a family tree
>
> Pranav,
>
> I have attached a zip file containing a png bitmap drawing of a physical
> tree, along with an svg rendition of the same drawing. All of the leaves
> have been stripped away in both versions making the limbs clearly visible.
> Emboss them and you will know what a physical tree looks like.
>
> Be aware, however, that when people create charts commonly called family
> trees, the charts are typically very stylized versions of an actual tree,
> often with the root at the top and the limbs and the leaves at the bottom.
> In other words, a family tree chart is often upside down as compared to a
> real tree in nature.
>
> Dick Baldwin
>
> On Mon, Jan 30, 2012 at 11:01 AM, Pranav Lal <pranav.lal at gmail.com> wrote:
>
> > Hi all,
> >
> > I am trying to draw my family tree in SVGDraw01. Well, what does a
> > tree look like in 2 dimentions? Is it a long line representing the
> > trunk and smaller lines coming out of that line at different heights
> > that represent the nodes?
> >
> > Note:
> > If this is off topic for this list, I apologize and could someone
> > please point me to a forum where I could ask such a question?
> > Pranav
> >
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> >
>
>
>
> --
> Richard G. Baldwin (Dick Baldwin)
> Home of Baldwin's on-line Java Tutorials http://www.DickBaldwin.com
>
> Professor of Computer Information Technology Austin Community College
> (512) 223-4758
> mailto:Baldwin at DickBaldwin.com
> http://www.austincc.edu/baldwin/
>
>
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-- 
Richard G. Baldwin (Dick Baldwin)
Home of Baldwin's on-line Java Tutorials
http://www.DickBaldwin.com

Professor of Computer Information Technology
Austin Community College
(512) 223-4758
mailto:Baldwin at DickBaldwin.com
http://www.austincc.edu/baldwin/