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 9cbfd02..01b6799 100644 (file)
--- a/src/rrd_graph.h
+++ b/src/rrd_graph.h
@@ -5,8 +5,8 @@
 #include "rrd_rpncalc.h"
 #include "rrd_gfx.h"
 
-#define MAX_VNAME_LEN 29
-#define DEF_NAM_FMT "%29[-_A-Za-z0-9]"
+#define MAX_VNAME_LEN 255
+#define DEF_NAM_FMT "%255[-_A-Za-z0-9]"
 
 #define ALTYGRID        0x01   /* use alternative y grid algorithm */
 #define ALTAUTOSCALE    0x02   /* use alternative algorithm to find lower and upper bounds */
@@ -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 */