Chapter 6. Software Change History
6.1 Changes from ART 2
Multiple time-histories can be selected for importation into ART.
Absolute and relative input energy spectra can be computed, plotted and exported.
Drift spectra for a cantilever shear-beam can be computed, plotted and exported.
Various strong-motion parameters based on cycle counting can be computed and exported.
Various additional strong-motion parameters can be computed and exported.
Graphs can be customized in more ways compared to ART2.0.
Records and derived parameters can be exported in Microsoft Excel .xls and Matlab .mat format.
Basic database functionality was added so that earthquake and station meta-data can be recorded and used.
Comparisons can be made between observed elastic response spectra and spectra predicted by various ground-motion prediction equations (GMPEs) and seismic design codes.
Time-histories can be plotted on to maps to show the geographical distribution of ground motions.
The software now supports accessing modem-connected instruments.
The code was made more efficient leading to better performance.
The software was made more user-friendly.
6.2 Changes from ART 1
Adjusted absolute time of record to account for zero-padding added before instrument correction and filtering in display and when exporting.
Added ability to export all derived strong-motion parameters (e.g. Arias intensity and Fourier amplitudes).
Correction for instrument response is now performed automatically when a time-history is loaded.
Added ability to process and view many records at once.
Comparisons between derived parameters (e.g. response spectral ordinates) from different records can by made.
Added zoom in and out functionality to time-history windows.
Graphs can now be exported in a variety of graphical formats (formats supported are: .bmp, .eps, .jpg, .png and .tif).
Graphs can now be printed.
Time-histories and derived strong-motion parameters can be displayed using different units.
Data from instruments with a velocity response can be imported, converted to acceleration and processed appropriately.
A file-name is automatically suggested for the export of time-histories and derived parameters.
Some minor bugs were corrected.
The appearance of some windows was improved.
Options have been add to allow the user to customize the appearance and functioning of some features.
The code was made more efficient leading to slightly better performance.
The polarity of the peak ground motion parameters is now displayed.
The absolute significant (effective) duration is now computed.
The cut-off frequency and order of the high-pass Butterworth filter can be chosen interactively using Fourier amplitude spectra of the signal and the noise (estimated from the pre-event portion of the time-history).
The units used to display accelerations, velocities and displacements can be chosen.