This site is designated as a Year 2000 Readiness Disclosure
and the information contained herein is provided pursuant to the Year 2000 Information and
Readiness Disclosure Act. The information contained on Mitre Software's Year 2000 Internet
Web site page(s) regarding products offered by Mitre Software are "Year 2000
Readiness Disclosures" under the Year 2000 Information and Readiness Disclosure Act
of 1998, a U.S. statute enacted on October 19, 1998.
Statement of Year 2000 Compatibility - GSLOPETM
GSLOPE uses dates in only two places; the first is in the Main Header, which contains a
field labelled "Date". The data in this field is recorded as a string variable,
and is not used in any calculation nor manipulated in any way. It therefore poses no
problem for Y2000 Compatibility. The other place where the date is used is on plots and
printouts, where the system date is used. Again, there is no calculation involving this
date.
Statement of Year 2000 Compatibility - GTILT®
Mitre Software Corporation does not warrant the correctness of this information, but
should any part of this statement prove to be materially incorrect, Mitre Software will
use its best efforts to provide a fix to affected licensed users of versions 1.52b or
later and all versions of GTILT for Windows® at no additional charge. This information is
not warranted in any other way. References to GTILT® in this document apply also to GTILT
PLUS® software.
GTILT® for DOS
All DOS versions of GTILT® use two-digit years. Versions 1.52b and later for DOS
handle Y2000 by assuming that years in the range from zero to 49 represent the calendar
years 2000 to 2049. Apart from printing out the current date on printouts, these programs
do not use the built-in system date of the machine they run on. Version 1.52b was
published in January 1997.
Versions 1.52a and earlier will produce incorrect Time-Displacement plots when used
with surveys dated after 1999. Those versions will also identify datasets dated 00, 01
etc. as being earlier than sets dated in the 1980's and 1990's, and as a result may offer
to rearrange the datasets in what the software sees as correct chronological order when
saving a file to disk.
GTILT® for Windows
The windows versions of GTILT® read and write essentially the same format of GTL file
as the DOS versions, except that they use four digits for the year. Dates are handled
using Microsoft Windows functions which we understand can handle dates up to 9999. Limited
testing under Windows 95 indicates that this is indeed the case.
The DOS versions of GTILT® can read files written with four-digit dates, but the DOS
versions read only the last two digits and interpret them as described above. Files
written by the Windows versions may include additional data (e.g. stratigraphy, sketch
objects) which is not used by the DOS version. When importing files which contain
two-digit dates, the Windows version of GTILT interprets the years 0 to 49 as calendar
years 2000 to 2049.
Suggested Procedure to Test GTILT Software for Y2000 compatibility
- Choose an existing GTL file containing several sets of readings, and rename it as
Y2000.GTL. It is best to choose a file which has a well-defined movement zone which has
been monitored over several years, eg. 1985 to 1995.
- Load Y2000.GTL file into GTILT, and verify that a Displacement-Time graph can be
displayed correctly. Print out the graph, and compare it with the version on the screen.
- Advance the date of every dataset by, say, ten years, to get a range of dates that
straddle 2000. In the DOS versions, express a date in 2002 as being in 02, for example.
- Redisplay the Displacement-Time graph and print it out. Check that the point spacing on
the new plot is the same as on the original, apart from subtle changes in horizontal
spacing due to the presence of leap years.
If you want to satisfy yourself that 2000 is treated as a leap-year, use the SubHeader to
change the dates of three consecutive datasets to noon on February 28, February 29 and
March 1, 2000. Display the Displacement-Time plot, then use either File/Print/Dump
Coordinates of Latest Plot (DOS versions) or File/Tabulate/Dump Coordinates of Latest Plot
(Windows versions) to display the dates, elapsed time, shear displacements, and rates of
displacement on the screen. Verify that the three readings whose dates you modified are
indeed spaced one day apart in the "elapsed days" column.
Other possible sources of Y2000 problems
GTILT could be affected by:
The system date of the computer system on which the program runs.
Inclinometer loggers which may have their own Y2000 issues.
Data transfer utilities which may or may not be provided by Mitre Software.
One possible sequence of actions which may be of assistance in testing for these types of
problems is given at the end of this section.
Check GTILT’s use of the system date
Reset the system date on the PC on which GTILT® is being run to a date in the year
2004. Make a data tabulation from GTILT® to confirm that the system date is correctly
reflected on the printout.
Check your Inclinometer Logger and Data Transfer Utility
Many different models of inclinometer logger are commonly used to collect data for
input to GTILT, and most of these use only two digits for the date. In general, if these
loggers are reset to show the year as 00, then GTILT® for DOS versions 1.52b and later,
and all Windows versions of GTILT, should register dates correctly until the year 2049.
Satisfactory operation has been tested and confirmed for some loggers, but because of the
many equipment combinations available, multiple firmware versions for each logger/readout,
and the various utilities used to transfer data, no blanket statement can be issued. Users
are encouraged to check the compatibility of their inclinometer logger and data transfer
method as follows:
- Temporarily reset the year on your inclinometer logger to 2000, or to 00 if the logger
uses only two digits.
- Generate some readings on the logger(dummy readings are OK).
- Transfer the readings to a PC using whatever method you normally use.
- Import the readings to GTILT® using the appropriate import format for your data.
- Check the SubHeader for the latest set to see that the date has been imported correctly.
Note that in DOS versions, only two digits will be displayed.
- Repeat for a later year, such as 2004.
GTILT® is a registered trademark of Mitre Software Corporation.
Windows® is a registered trademark of Microsoft Corporation.
