Lazarus
Home
Help
TinyPortal
Search
Login
Register
Lazarus
»
Forum
»
Programming
»
Graphics and Multimedia
»
TAChart
(Moderator:
Ask
) »
Line Simplification
Free Pascal
Website
Downloads
Wiki
Documentation
Bugtracker
Mailing List
Lazarus
Website
Downloads (Laz+FPC)
Packages (OPM)
FAQ
Wiki
Documentation (RTL/FCL/LCL)
Bugtracker
CCR Bugs
IRC channel
GIT
Mailing List
Other languages
Foundation
Website
Useful Wiki Links
Project Roadmap
Getting the Source
Screenshots
How to use the forum
About donations (wiki)
Bookstore
Computer Math and Games in Pascal
(preview)
Lazarus Handbook
Search
Advanced search
Recent
Database standards OR Am ...
by
paweld
[
Today
at 01:07:33 pm]
Who is Indy mattias?
by
paweld
[
Today
at 12:58:14 pm]
How to: create DLL file f...
by
440bx
[
Today
at 12:42:21 pm]
Access violation when ope...
by
Чебурашка
[
Today
at 12:27:34 pm]
Step-into the field sette...
by
Martin_fr
[
Today
at 11:31:48 am]
Access violation when re-...
by
Chris Osborne
[
Today
at 11:31:25 am]
AI, NLP and CAI: Text Gen...
by
Dzandaa
[
Today
at 11:03:26 am]
dwindows for Android
by
PierceNg
[
Today
at 10:54:44 am]
create system unit from s...
by
Laksen
[
Today
at 10:53:57 am]
how to get class and meth...
by
cdbc
[
Today
at 10:52:22 am]
[Solved] Find child contr...
by
Joanna
[
Today
at 09:53:43 am]
FpDebug unexpected Assemb...
by
Marc
[
Today
at 08:46:38 am]
Offical launch of the 1 B...
by
Handoko
[
Today
at 07:59:07 am]
Big Numbers Math
by
iLya2IK
[
Today
at 07:13:20 am]
Lazarus for Windows on aa...
by
dbannon
[
Today
at 07:02:55 am]
BUG REPORT: Unable to gen...
by
dbannon
[
Today
at 06:29:49 am]
what to do if my target M...
by
Laksen
[
Today
at 12:49:12 am]
For-in loop over constant...
by
ASerge
[
Today
at 12:36:09 am]
Converting a string/index...
by
TRon
[April 18, 2024, 11:56:37 pm]
exclude ALL packages from...
by
PascalDragon
[April 18, 2024, 11:33:29 pm]
Demoscene The Champs Crac...
by
KodeZwerg
[April 18, 2024, 11:29:50 pm]
Poll: Watches and Display...
by
440bx
[April 18, 2024, 10:55:14 pm]
Have anyone develop UEFI ...
by
PascalDragon
[April 18, 2024, 10:14:15 pm]
The weird Rewrite bug
by
PascalDragon
[April 18, 2024, 09:58:53 pm]
Assign (textfile) not com...
by
PascalDragon
[April 18, 2024, 09:51:50 pm]
« previous
next »
Print
Pages: [
1
]
Author
Topic: Line Simplification (Read 1179 times)
tudi_x
Hero Member
Posts: 532
Line Simplification
«
on:
May 21, 2019, 01:59:59 pm »
hi,
i need to write some line simplification code (ex.
https://en.wikipedia.org/wiki/Ramer%E2%80%93Douglas%E2%80%93Peucker_algorithm
).
i was wondering how line simplification is achieved in TAChart.
i am interested in how from N point to leave only n points with least degradation of the theoretical curve.
thank you
Logged
Lazarus 2.0.2 64b on Debian LXDE 10
wp
Hero Member
Posts: 11916
Re: Line Simplification
«
Reply #1 on:
May 21, 2019, 02:42:46 pm »
This algorithm is not available within TAChart. Of course you can use TAChart to plot the initial and final curves, but the algorithms has to be written by yourself.
Logged
avra
Hero Member
Posts: 2514
Re: Line Simplification
«
Reply #2 on:
May 22, 2019, 04:03:43 pm »
https://web.archive.org/web/20120622080422/https://www.simdesign.nl/douglaspeucker.html
https://github.com/WouterVanNifterick/delphi-maps/blob/master/source/DelphiMaps.DouglasPeuckers.pas
«
Last Edit: May 23, 2019, 09:37:01 pm by avra
»
Logged
ct2laz
- Conversion between Lazarus and CodeTyphon
bithelpers
- Bit manipulation for standard types
pasettimino
- Siemens S7 PLC lib
Print
Pages: [
1
]
« previous
next »
Lazarus
»
Forum
»
Programming
»
Graphics and Multimedia
»
TAChart
(Moderator:
Ask
) »
Line Simplification
TinyPortal
© 2005-2018