Issue 77963

Summary:	Overlapping Histograms
Product:	General	Reporter:	discoleo <discoleo>
Component:	chart	Assignee:	IngridvdM
Status:	CLOSED DUPLICATE	QA Contact:	issues@graphics <issues>
Severity:	Trivial
Priority:	P3	CC:	issues, pagalmes.lists, tony.galmiche.ooo
Version:	3.3.0 or older (OOo)
Target Milestone:	---
Hardware:	All
OS:	All
URL:	http://rapid-i.com/images/stories/rapidi/yale/screenshots/screenshot14.gif
Issue Type:	FEATURE	Latest Confirmation in:	---
Developer Difficulty:	---

Description discoleo 2007-05-30 20:14:01 UTC

One feature that I really miss are histograms (this is dealt in issue 49971, see
http://www.openoffice.org/issues/show_bug.cgi?id=49971).

An extension to the previous issue are overlapping histograms. These are
especially helpful when studying multiple groups of data. One application field
is in data mining. [Please note that data mining is extensively used by big
corporations.]

Overlapping histograms should allow *colour overlaying* to preserve visibility.
This is best viewed in the following example:
http://rapid-i.com/images/stories/rapidi/yale/screenshots/screenshot14.gif (see
also the other examples on the site for various data-mining techniques).

It would be surely useful to have the ability:
  - to plot multiple histograms (or other charts simultaneously) AND
  - have the ability to set various colour overlaying modes
     - add, XOR, ...
     - transparency, ...
     - IF ( overlap ) THEN slight shifting

For other types of simultaneous plots, see also:
http://addictedtor.free.fr/graphiques/RGraphGallery.php?graph=136 and various
other examples on http://addictedtor.free.fr/graphiques/ .

Comment 1 kla 2007-06-01 10:59:40 UTC

@Iha: one good idea for you.

Comment 2 IngridvdM 2007-09-12 11:05:23 UTC

adjusting target

Comment 3 IngridvdM 2007-11-09 11:59:47 UTC

I believe overlapping histograms will become available automatically when these
other features are implemented before:
1) Histogram charts ( issue 49971 )
2) Independent x axis ( issue 78093 or maybe issue 7637) 
Maybe point 2 is even not necessary.
You can make bars transparent already now.
I will not implement additional complex mechanisms for this.
So state is somewhere between duplicate and won't fix.


*** This issue has been marked as a duplicate of 78093 ***

Comment 4 Mechtilde 2008-11-05 21:04:38 UTC

close the duplicate