2D contour line algorithm REFERENCE?

2D contour line algorithm REFERENCE?

Post by ra-use » Fri, 25 Sep 1998 04:00:00



I am looking for a reference of a book or article in which
(one or more) 2D contour line algorithms are described.
I am not looking for an algorithm because I wrote one myself
(it's not that difficult), but I need a reference to a 'good book'
(I guess numerous graphics books elaborate on this).

Thanks very much in advance,

Reinier Sterkenburg
email: sterkenburg_AT_pml.tno.nl

 
 
 

2D contour line algorithm REFERENCE?

Post by Sebastian Modersoh » Fri, 02 Oct 1998 04:00:00


Hi,

sorry that I can't help with the book, but I'm indeed looking for one
myself. But an algorithm would be perfect anyway as I don't find it easy at
all. Could you give me some hints how this can be done or even the
algorithm????

Would be perfect!

Thanks in advance

Sebastian Modersohn


Quote:>I am looking for a reference of a book or article in which
>(one or more) 2D contour line algorithms are described.
>I am not looking for an algorithm because I wrote one myself
>(it's not that difficult), but I need a reference to a 'good book'
>(I guess numerous graphics books elaborate on this).

>Thanks very much in advance,

>Reinier Sterkenburg
>email: sterkenburg_AT_pml.tno.nl


 
 
 

2D contour line algorithm REFERENCE?

Post by David Wats » Fri, 02 Oct 1998 04:00:00


: sorry that I can't help with the book, but I'm indeed looking for one
: myself. But an algorithm would be perfect anyway as I don't find it easy at
: all. Could you give me some hints how this can be done or even the
: algorithm????


: >I am looking for a reference of a book or article in which
: >(one or more) 2D contour line algorithms are described.
: >I am not looking for an algorithm because I wrote one myself
: >(it's not that difficult), but I need a reference to a 'good book'
: >(I guess numerous graphics books elaborate on this).
: >
: >Thanks very much in advance,
: >
: >Reinier Sterkenburg
: >email: sterkenburg_AT_pml.tno.nl

http://www.iinet.com.au/~watson/contour.html

--
Dave Watson          
P.O. Box 734                 http://www.iinet.com.au/~watson

Australia                         tel & fax: +61 8 9385 2227

 
 
 

2D contour line algorithm REFERENCE?

Post by Sebastian Modersoh » Fri, 02 Oct 1998 04:00:00


David,

thanks for the tip. Your book looks very interesting (but I got some
problems with ordering it here in Germany ;->).

Do you think that for understanding and implementing your algorithms it is
neccessary to have your natural neighbor interpolation stuff? The problem
with my data is, that it is very low-res and the Conrec routine from Paul
Bourke seems not to work with my data.

Thanks for your help

Sebastian



>: sorry that I can't help with the book, but I'm indeed looking for one
>: myself. But an algorithm would be perfect anyway as I don't find it easy
at
>: all. Could you give me some hints how this can be done or even the
>: algorithm????

>http://www.iinet.com.au/~watson/contour.html

>--
>Dave Watson
>P.O. Box 734                 http://www.iinet.com.au/~watson

>Australia                         tel & fax: +61 8 9385 2227

 
 
 

1. Line Reconstruction Algorithm (from contour line segments)

Hi,

        I have as output, a series of line segment from a contouring
subroutine. The list of line segment are not sorted in any order.

                _____start_______       _______end_______
        Id      X       Y       Z       X       Y       Z
        0       1.2     2.5     2.2     2.1     8.8     2.2
        1       3.7     6.2     3.2     6.2     2.3     3.2
        2       0.7     2.8     4.2     5.3     4.1     4.2
        3       9.8     9.3     2.2     1.1     6.8     2.2
        4       6.1     4.7     3.2     2.8     1.4     3.2

        I am looking for some algorithm that looks at all the line segment and
reconstruct the contour line(s).

        Does anyone have reference to papers or books on such algorithm ?

Cheers
--
Nicholas Yue                    | JavaBeans.

http://www.cwr.uwa.edu.au/~yue  | +61 08 9380-1897 (Office)
The Centre for Water Research   | +61 08 9380-1015 (Fax)

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