Recent changes to bugs

Problem with ForceDirectedLayout

Jens Kanschik — Sun, 09 Nov 2008 11:08:00 -0000

In the topic map examples on the website, the ForceDirectedLayout seems to compute a position outside of the allowed range from time to time. Usually, one or more nodes have a location in the upper left corner and they don't move when the graph is moved.

Probably there is some rounding problem in the algorithm. The problem doesn't occur when using the TreeLayout as in the other examples.

website error

Ken Robertson — Tue, 04 Nov 2008 11:03:10 -0000

On your page http://hypergraph.sourceforge.net/examples-orga.html

This link
http://hypergraph.sourceforge.net/graphs/orga-rub.xml
returns the following display

XML Parsing Error: prefix not bound to a namespace
Location: http://hypergraph.sourceforge.net/graphs/orga-rub.xml
Line Number 18, Column 3:
<ref xlink:href = "http://www.ruhr-uni-bochum.de"/>
----------------^

--
Regards
Ken

HyperGraph displays only one component

Richard C. Yeh — Fri, 29 Feb 2008 16:07:37 -0000

It appears that HyperGraph displays only a single component. If the graph has multiple disjoint components, then the second component won't be shown.

Example:

<?xml version="1.0"?>
<!DOCTYPE GraphXML SYSTEM "GraphXML.dtd">
<GraphXML>
<graph id="two_components_example">

<node name="c1s" />
<node name="c1t" />
<edge source="c1s" target="c1t">
<label>first component</label>
</edge>

<node name="c2s" />
<node name="c2t" />
<edge source="c2s" target="c2t">
<label>second component</label>
</edge>

</graph>
</GraphXML>

Writing error in installation documentation

Anonymous — Sun, 02 Dec 2007 15:25:46 -0000

The installation documentation ( http://hypergraph.sourceforge.net/simple_graphs.html ) of the .xml file has little bug.

The <GraphXML> Tag at the end of the File is open and produces a parsing error.

AbstractTextRenderer.getFontHandle sometimes returns -1

Robert Dodier — Mon, 26 Nov 2007 19:10:29 -0000

hypergraph.hyperbolic.AbstractTextRenderer.getFontHandle sometimes returns -1, which causes hypergraph.hyperbolic.swt.SWTTextRenderer.configure to barf with ArrayIndexOutOfBoundsException.

SWTTextRenderer.configure expects the return value of getFontHandle to be a nonnegative integer (since it is used as an array index). But getFontHandle returns a negative value when its arguments is less than -0.05.

The argument of getFontHandle is a scale value. Maybe the scale is supposed to be positive; I don't understand enough about Hypergraph to say. I'll patch my copy of Hypergraph so getFontHandle returns 0 if scale < 0.

Graph root folder and specials caracters url

Anonymous — Wed, 18 Oct 2006 09:35:11 -0000

Hi!

I'm trying to use your hyperapplet.jar with xml graphs
and i've notive on my PC that if Graph root folder
have specials caracters in path, applet don't start.

I'm using Java 2 SE update 6 and W2K either with FF or
Opera explorers.

Hope it helps, and thank for ur great project!

citronized@gmail.com

typo in sample XML

Anonymous — Wed, 19 Apr 2006 18:46:07 -0000

http://hypergraph.sourceforge.net/simple_graphs.html

has the end tag written as <GraphXML> when it should be
</GraphXML>

Thanks for the great software!!

web site has incorrect documentation

Anonymous — Tue, 18 Apr 2006 15:48:12 -0000

the documented method for employing the 'target' option
for hyperlinks within hypergraph is wrong.

it states to use the property value
'hypergraph.examples.hexplorer.GraphPanel.target', it
should be:
'hypergraph.applications.hexplorer.GraphPanel.target'.

this mistake is found on several pages, these include:
http://hypergraph.sourceforge.net/propBrowser.html
http://hypergraph.sourceforge.net/hyperlinks.html

thanks for the great product.

matt zagrabelny
mzagrabe@d.umn.edu

Node name sometimes displayed instead of label

Muddle-headed Wombat — Mon, 06 Mar 2006 00:49:45 -0000

For some nodes, HyperGraph sometimes displays the node
name instead of the label. I have not been able to
precisely determine the conditions in which this happens.

In the attached graph, you'll see that "n19" is
displayed instead of "memes", and "n71" is displayed
instead of "mo scríobhaí".

Controller.getElement(int, int) doesn't work correctly

Jens Kanschik — Sun, 30 Oct 2005 13:51:54 -0000

The method
hypergraph.visualnet.Controller.getElement(int, int)
doesn't check the full text for nodes, but only the
distance to the location of the node.