Posts on HiP-HOPS

Version Update 2.5.907

Thu, 27 Nov 2025 00:00:00 +0000

[fix] Error message appeared when attempting to open perspective as a component in the Matlab editor. Now this is more gracefully handled with dialog. [fix] Bug due to deprecated size method behaviour in 2025 Matlab version.

[note] There is a known issue when using Chrome as the default browser. If the output type is set to HTML, HiP-HOPS will automatically attempt to open the results output in the default browser. When the default browser is Chrome, and Chrome is not already open, the system call appears to wait indefinitely before releasing for other processes to continue when the browser is closed. This issue appears to be isolated to Chrome and does not present with other browsers including Edge and Firefox. There is no fix for this, but it can be worked around by opening Chrome before running the analysis.

Version Update 2.5.906

Fri, 02 May 2025 00:00:00 +0000

[fix] In Chrome based browsers there was a bug that prevented the treeview from operating properly when you returned to the treeview having navigated somewhere else.

Version Update 2.5.905

Sat, 30 Dec 2023 00:00:00 +0000

[fix] There was an error that prevented results from the optimisation example being automatically opened in the browser.

[fix] There was an error that prevented the warning list in the results from being correctly rendered.

Version Update 2.5.904

Sat, 23 Sep 2023 00:00:00 +0000

[feature] The Matlab Failure Editor UI has been updated to improve the user experience. The UI will automatically detect available deviations for a component based on the propagations from other connected components. These can then be added to a failure definition from a pre-populated list rather than having to manually type in the failure. This should result in fewer errors due to typos.

Version Update 2.5.903

Fri, 03 Feb 2023 00:00:00 +0000

[fix] Bug in Model Parameters Editor of the Matlab Simulink user interface where the state of the DecomposeSILs and OutputToExcel check boxes were not being properly recognised. [note] There is a known issue when using Chrome as the default browser. If the output type is set to HTML, HiP-HOPS will automatically attempt to open the results output in the default browser. When the default browser is Chrome, and Chrome is not already open, the system call appears to wait indefinitely before releasing for other processes to continue when the browser is closed. This issue appears to be isolated to Chrome and does not present with other browsers including Edge and Firefox. There is no fix for this, but it can be worked around by opening Chrome before running the analysis.

Version Update 2.5.902

Mon, 23 Jan 2023 00:00:00 +0000

[feature] complete overhaul of the Matlab Simulink user interface.
[feature] refresh of the manual. [feature] updated set of example/tutorial models to illustrate concepts in the updated manual.

Version Update 2.5.901

Mon, 17 Oct 2022 00:00:00 +0000

[feature] removed dependancy on Internet Explorer for viewing results; will now open in any browser.

Version Update 2.5.900

Sat, 13 Aug 2022 00:00:00 +0000

[feature] added severity field to Hazards dialog in the Matlab GUI
[fix] Matlab interface bug the prevented editing and deleting of failure causes in output deviations and hazards

Version Update 2.5.899

Sat, 18 Apr 2020 00:00:00 +0000

[feature] updated unavailability calculations
[feature] added frequency calculation
[fix] Matlab interface bug the prevented editing of exiting failure logic
[fix] Matlab interface bug preventing output to XML

Version Update 2.5.893

Thu, 18 Aug 2016 00:00:00 +0000

[fix] Bug in the Matlab GUI scripts that caused an error if the top subsystem in the model had the same name as the model.
[fix] Bug in the HiP-HOPS engine that prevented the user from targeting a system level implicit output deviation when the explicit deviation is in a subsystem.
[fix] The xml output from the Matlab GUI script now includes line breaks after tags to make the line numbers in the HiP-HOPS parse errors more meaningful.

Version Update 2.5.891

Mon, 01 Aug 2016 00:00:00 +0000

[fix] Issues with applying the consensus law in non-coherent fault trees.

Version Update 2.5.890

Tue, 19 Jul 2016 00:00:00 +0000

[fix] Fixed a number of sources of memory leaks.

Version Update 2.5.888

Tue, 12 Jan 2016 00:00:00 +0000

[fix] Fixed a bug which was causing a crash under certain circumstances when the command argument idevns=false was used.

Version Update 2.5.887

Tue, 08 Dec 2015 00:00:00 +0000

[fix] Fixed a bug in the Matlab GUI script where ports were not being properly exported to the HiP-HOPS xml model file.

Version Update 2.5.885

Wed, 26 Nov 2014 00:00:00 +0000

[fix] Fixed missing generations field in Matlab Failure Editor GUI

Version Update 2.5.883

Wed, 22 Oct 2014 00:00:00 +0000

Updated Matlab2Hipx to allow Matlab libraries to be analysed.

Version Update 2.5.881

Wed, 24 Sep 2014 00:00:00 +0000

Version Update 2.5.882

Wed, 24 Sep 2014 00:00:00 +0000

[fix] Fixed bug to do with cut set pruning. Should yield improved performance in certain fault trees.

Version Update 2.5.879

Tue, 08 Jul 2014 00:00:00 +0000

[feature] Added experimental ASIL decomposition utility.

Version Update 2.5.878

Tue, 10 Jun 2014 00:00:00 +0000

Updated the PCCF handling in the output so that they stay visible. This way it is possible to see which components are connecting to a given common cause failure. Also:
[Fix] Corrected a fault with lines that transform failure classes.

Version Update 2.5.877

Thu, 05 Jun 2014 00:00:00 +0000

Version Update 2.5.876

Mon, 17 Mar 2014 00:00:00 +0000

[fix] Corrected Minor Asil decompostion usability issue.

Version Update 2.5.873

Mon, 10 Mar 2014 00:00:00 +0000

[feature] Updated ASIL parameters to include number of output solutions and a cost heuristic.

Version Update 2.5.874

Mon, 10 Mar 2014 00:00:00 +0000

[fix] Updated to ensure backwards compatibility with Windows XP.

Version Update 2.5.872

Thu, 21 Nov 2013 00:00:00 +0000

[Fix] HiP-HOPS now gracefully handles running out of memory rather than crashing.

Version Update 2.5.870

Wed, 20 Nov 2013 00:00:00 +0000

[Fix] Excessive numbers of warnings no longer cause an out of memory crash. Warning numbers capped at 100 whilst still recording the total number of errors.
[Fix] Incorrect parser error causing crash.

Version Update 2.5.871

Wed, 20 Nov 2013 00:00:00 +0000

[Fix] Bug in Matlab Failure Editor that allowed component data to be overwritten with other component data.
[Fix] Bug in Matlab Failure Editor that occurred when users switched from a perspective to a component.

Version Update 2.5.869

Fri, 25 Oct 2013 00:00:00 +0000

[fix] Updated to ensure IE 11 compatibility.

Version Update 2.5.867

Fri, 18 Oct 2013 00:00:00 +0000

[Fix] Updated to support results viewing in IE10.
[Fix] Updated output format to show optimisation output in a consistent style to the other analysis results.
[Fix] Updated output to allow going back to the list of optimisation results from a specific candidate.

Version Update 2.5.862

Wed, 31 Jul 2013 00:00:00 +0000

[Fix] Added missing xsl files in FTOutput folder.

Version Update 2.5.861

Mon, 29 Jul 2013 00:00:00 +0000

Version Update 2.5.857

Thu, 18 Jul 2013 00:00:00 +0000

Version Update 2.5.859

Thu, 18 Jul 2013 00:00:00 +0000

Version Update 2.5.860

Thu, 18 Jul 2013 00:00:00 +0000