From f73a451bf189482b858caf3b41ce38fe9b7ae468 Mon Sep 17 00:00:00 2001
From: Martin Preuss <martin@aquamaniac.de>
Date: Mon, 29 Dec 2025 18:36:49 +0100
Subject: [PATCH] add modifiers for daysums, monthsums etc.

---
 src/lib/aqdiagram/graph/timegraph.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/src/lib/aqdiagram/graph/timegraph.c b/src/lib/aqdiagram/graph/timegraph.c
index a184e04..d899da7 100644
--- a/src/lib/aqdiagram/graph/timegraph.c
+++ b/src/lib/aqdiagram/graph/timegraph.c
@@ -14,6 +14,8 @@
 
 #include <aqdiagram/data/date.h>
 #include <aqdiagram/data/floatingavg.h>
+#include <aqdiagram/data/accumulate.h>
+#include <aqdiagram/data/negate.h>
 
 #include <gwenhywfar/debug.h>
 
@@ -209,6 +211,31 @@ void AQDG_TimeGraph_ModifyDataAndAddCurve(AQDG_GRAPH *g, const char *sLabel, con
     case 'S': graphType=AQDG_GRAPH_TYPE_STEPLINE; s++; break;
     case 'P': graphType=AQDG_GRAPH_TYPE_POINTS;   s++; break;
     case 'B': graphType=AQDG_GRAPH_TYPE_BARS;     s++; break;
+
+    case 'A':
+      newDp=AQDG_Data_Accumulate(dpList);
+      AQDG_Graph_DataPair_List_free(dpList);
+      dpList=newDp;
+      AQDG_Graph_DataPair_List_SortByValueX(dpList, 1);
+      break;
+    case 'D':
+      newDp=AQDG_Data_DaySums(dpList);
+      AQDG_Graph_DataPair_List_free(dpList);
+      dpList=newDp;
+      AQDG_Graph_DataPair_List_SortByValueX(dpList, 1);
+      break;
+    case 'M':
+      newDp=AQDG_Data_MonthSums(dpList);
+      AQDG_Graph_DataPair_List_free(dpList);
+      dpList=newDp;
+      AQDG_Graph_DataPair_List_SortByValueX(dpList, 1);
+      break;
+    case 'N':
+      newDp=AQDG_Data_NegateY(dpList);
+      AQDG_Graph_DataPair_List_free(dpList);
+      dpList=newDp;
+      AQDG_Graph_DataPair_List_SortByValueX(dpList, 1);
+      break;
     case 'd':
       newDp=AQDG_Data_DayAverage(dpList);
       AQDG_Graph_DataPair_List_free(dpList);