New VDEF functions for least squares slope, intercept & correlation for simple foreca...

[rrdtool.git] / src / rrd_graph.h

diff --git a/src/rrd_graph.h b/src/rrd_graph.h
index 9ced52e..01b6799 100644 (file)
--- a/src/rrd_graph.h
+++ b/src/rrd_graph.h
@@ -42,6 +42,9 @@ enum vdef_op_en {
                ,VDEF_TOTAL     /* average multiplied by time */
                ,VDEF_FIRST     /* first non-unknown value and time */
                ,VDEF_LAST      /* last  non-unknown value and time */
+               ,VDEF_LSLSLOPE  /* least squares line slope */
+               ,VDEF_LSLINT    /* least squares line y_intercept */
+               ,VDEF_LSLCORREL /* least squares line correlation coefficient */
                };
 enum text_prop_en { TEXT_PROP_DEFAULT=0,   /* default settings */
                    TEXT_PROP_TITLE,       /* properties for the title */