Version Date Description ------- -------- --------------------------------------------------------- 4.0 01/27/05 In the computation of the concurrent record matrix, removed write to screen that was warning about each pair of stations for which one or both were partial record sites. 11/01/04 In developing the concurrent record matrix, previous versions limited the time period to 1800-1999. This has been changed to 1800 - 2049. In previous versions, the time series of 1.0 and -99999. developed with the Stedinger option was on a calendar year rather than the appropriate climatic year of March - April; this conflicts with how the annual n-day low flows are calculated in the N-day option in swstat. glsnet has been modified to consider the month the measurements were made. The year associated with a measurement using the climatic year is the year March occurs. Depending on the dates of the partial record measuremnts, this may shift the time period for the site forward one year (likely) and may also increase or decrease the number of years in the record (less likely.) Revised code for Partial option to add the attribute STATCD to the partial record data sets. STATCD is set to 99 to indicate the data set contains a partial record record site. These sites will not be used in the cross-correlation versus distanc plot. For partial record data entered using the Manual option in previous versions of glsnet, there were some logic problems in the code. For low flows other than 7-day low flows, there will probably be errors in the statistics stored in the data sets. Numerous cosmetic changes have been made. Command (log) files developed using earlier versions of glsnet will not work with this version. 3.0 02/02/25 Version 3.0 was never formally distributed. The changes noted below are included in version 4.0. Revised code to use the logs of the annual peaks to compute cross correlations to be plotted. The program had been using annual peaks in cubic feet per second. Two new attributes were added to data sets computed using the n-day option in swstat version 3.2. SEADBG (443) is the starting day of a season and SEADND (444) is the ending day of a season. They are used in combination with SEASBG AND SEASND. The index numbers used for these attributes conflicted with attributes DATCRE and DATMOD which were added for another application to document the dates a data set was created and last modified, respectively. The index numbers for SEADBG and SEADND are now 446 and 447. If you have wdm files that were created using version 3.2 of swstat, you will need to run the wdmrx program to correct these attributes before you use any other applications to analyze the data sets (wdmrx is included in the bin directory of the glsnet program distribution and is also found in the annie distribution, see http://water.usgs.gov/software/annie.html). 2.6 98/05/21 Network analysis changed to run a zero planning horizon. Corrected a problem in the code that caused the program to quit if the user tried to have a 6th parameter in the network analysis regression equation. 2.5 97/09/29 Corrected an error in the calculation of the derivative of the objective function with respect to the number of years of record. 2.4 97/05/09 Changed how the average sampling error varience is computed in the network analysis. Should be faster. Simplified proceedures for recompiling program with different dimensions. The new version computes average sampling error variance by averaging over all sites including potential (or new) sites whether they are designated to be operated in the future or not. The old version did the averaging over the existing sites plus any new sites that were designated to be operated in the future. Thus, the new version averages over the same set of sites at each step, while the old version did not necessarily average over the same set of sites for each step. New include file psize.inc contains the parameter SIZE, which is the number of stations (old and new) that can be processed. Makefile was modified to allow for making glsnet in various sizes (300, 600, and 700 provided). 2.3 96/12/17 Incorrect conversion of degree-minute-second latitudes and longitudes to decimal degrees (off by a factor of 10) has been corrected. This would only have been a problem in the following cases: 1. latitudes and longitudes were stored in the WDM attributes LATDMS & LNGDMS. (Note that data entered with the iowdm options peak, n-day, and (or) basin would not have this problem as lat/lng were stored as decimal degrees in attributes LATDEG & LNGDEG.) 2. when proposed stations were being added for the network analysis. 2.2 95/10/08 Increased the maximum number of stations from 300 to 600. 95/10/21 Fixed graphics to correctly handle Modify/Device. ** 95/11/14 Correction made in how peak qualification codes are being handled. There was a problem if the user specified no qualification codes (all peaks were to be included). In this case, peaks that had no qualification codes may not have been included. 2.1 94/11/01 Corrections made in the Partial record option and the Ols option. Corrected a bug that caused the program to bomb when the user entered an invalid name for the input file. Corrected bugs that caused the Ols option to fail.