It is hard to believe it has been a few years since the last version of SCraMP! In a reflection of the years gone by, this version contains "under the hood" code updates and modernization that should make it run better on newer devices, without looking much different to end users. Additionally, I've added a thank you to the newest source of grant support for this, and related fishing vessel safety app work, from the Northeast Center for Occupational Health and Safety.

Bug fixes

Added a feature to auto-save data while recording.

Bug fixes

Version 3.13 features two new warning metrics. One metric helps identify potential parametric roll conditions by comparing roll period to pitch period and providing audible and visual warnings when this ratio approaches 2. The second metric helps identify heave periods and accelerations that may exacerbate motion sickness, specifically, periods between 5-6s with a heave acceleration larger than 0.2g.

Updates for iOS7

Added GPS timestamp to recording feature.

Cleaned up GUI to better accommodate device variations

Due to the removal of RSS support in Safari with iOS 6, I have removed the one-click buoy data launch option from the Location screen. It saddens me to remove any functionality, but with the bevy of excellent buoy apps in the App Store, it didn't seem to make sense to invest in coding a buoy reader specifically for SCraMP. As always, I welcome user feedback on this and other changes.

You asked and we listened! Version 3.8 includes audible alarms and universal iPad support. NOTE: iOS6 users, Apple has disabled the RSS feed reader in Safari thereby disabling the NOAA buoy data link. I'm going to wait it out a bit in hopes they add the RSS feature back in; otherwise, expect a fix in Version 3.9 in the not too distant future!

(1) This version records many user settings so that, for example, you won't have to enter your boat's beam every time you launch the app. (2) By user request (so that you don't have to mount your iPhone level) I've added a zeroing option on the gyroscope screen, which is also reflected in the metrics in the safety metrics screen (3) For tow-tank/data acquisition users, I've added a choice of coordinate systems: Tait-Bryan (a special case of Euler angles), which is the usual boat-fixed coordinate system normally used when someone refers to a boat's "roll, pitch, or yaw," or an earth-fixed Euler angle representation, which is what past versions of SCraMP used. The recording feature records motions in both coordinate systems. (4) Added heading and compass

Added ability to estimate roll period and GM. Roll period and GM estimates are plotted each roll cycle (rather than at the sampling frequency) so that trend behavior can be seen.

Incorporated location data into recording feature.

Links to National Data Buoy Center to provide user wave buoy data.

Added ability to set nominal sample rate and to pass large data recordings via iTunes.

Various performance enhancements for iOS5

Added an indicator to display when data is being recorded.

Added ability to record accelerometer and gyroscope data Improved GUI

Improved GUI; added access to location data