Fixed update of covariance matrix when both variables are categorical.

[pspp-builds.git] / src / math / ChangeLog

diff --git a/src/math/ChangeLog b/src/math/ChangeLog
index b045df07cb09aaa0fc2e49625a0df6aa310f5e75..f2443b09f0db2704b8abba3397a6ce0788cd816f 100644 (file)
--- a/src/math/ChangeLog
+++ b/src/math/ChangeLog
@@ -1,3 +1,29 @@
+2008-07-16  Jason Stover  <jhs@math.gcsu.edu>
+
+       * covariance-matrix.c (covariance_pass_two): Renamed
+       covariance_pass_one. Fixed update of covariance matrix when both
+       variables are categorical.
+       (column_iterate): New function.
+
+2008-07-15  Jason Stover  <jhs@math.gcsu.edu>
+
+       * covariance-matrix.c (covariance_pass_one): New file, new function.
+
+2008-06-21  Jason Stover  <jhs@math.gcsu.edu>
+
+       * linreg.c (pspp_linreg): Accept a struct design_matrix.  Use new
+       accessor functions pspp_coeff_get_mean, pspp_coeff_get_sd.  New
+       functions pspp_linreg_get_indep_variable_mean,
+       pspp_linreg_set_indep_variable_mean,
+       pspp_linreg_get_indep_variable_sd,
+       pspp_linreg_set_indep_variable_sd. Altered pspp_linreg_get_coeff
+       to use accessor function pspp_coeff_var_to_coeff.
+
+       * coefficient.c: New functions pspp_coeff_get_mean,
+       pspp_coeff_set_mean, pspp_coeff_get_sd, pspp_coeff_set_sd,
+       pspp_coeff_var_to_coeff. Added doubles to hold mean and standard
+       deviation in struct varinfo.
+
 2008-06-14  Jason Stover  <jhs@math.gcsu.edu>
 
        * linreg/: moved linreg.[ch] to src/math.
@@ -10,7 +36,7 @@
        stopgap measure for portability until appropriate gnulib modules
        are available.
 
-2008-03-10  Jason Stover  <jhs@debs.hoobahooba.net>
+2008-03-10  Jason Stover  <jhs@math.gcsu.edu>
 
        * coefficient.c (pspp_linreg_get_coeff): Removed use of
        coefficient 0 as intercept.