IfcCSV can now create summary rows (e.g. total, average) at the end of the table (may or may not be in addition to group totals).

src/blenderbim/blenderbim/bim/module/csv/operator.py

@@ -82,6 +82,7 @@ class ImportCsvAttributes(bpy.types.Operator):
             new.header = attribute["header"]
             new.sort = attribute["sort"]
             new.group = attribute["group"]
+            new.summary = attribute["summary"]
         return {"FINISHED"}
 
     def invoke(self, context, event):
@@ -104,7 +105,8 @@ class ExportCsvAttributes(bpy.types.Operator):
         data = {
             "query": tool.Search.export_filter_query(props.filter_groups),
             "attributes": [
-                {"name": a.name, "header": a.header, "sort": a.sort, "group": a.group} for a in props.csv_attributes
+                {"name": a.name, "header": a.header, "sort": a.sort, "group": a.group, "summary": a.summary}
+                for a in props.csv_attributes
             ],
         }
 
@@ -152,11 +154,14 @@ class ExportIfcCsv(bpy.types.Operator):
 
         sort = []
         groups = []
+        summaries = []
         for attribute in props.csv_attributes:
             if attribute.sort != "NONE":
                 sort.append({"name": attribute.name, "order": attribute.sort})
             if attribute.group != "NONE":
                 groups.append({"name": attribute.name, "type": attribute.group, "varies_value": attribute.varies_value})
+            if attribute.summary != "NONE":
+                summaries.append({"name": attribute.name, "type": attribute.summary})
 
         sep = props.csv_custom_delimiter if props.csv_delimiter == "CUSTOM" else props.csv_delimiter
         ifc_csv.export(
@@ -174,6 +179,7 @@ class ExportIfcCsv(bpy.types.Operator):
             bool_false=props.false_value,
             sort=sort,
             groups=groups,
+            summaries=summaries,
         )
         return {"FINISHED"}
 

src/blenderbim/blenderbim/bim/module/csv/prop.py

@@ -49,6 +49,15 @@ class CsvAttribute(PropertyGroup):
         ]
     )
     varies_value: StringProperty(default="Varies", name="Varies Value")
+    summary: EnumProperty(
+        items=[
+            ("NONE", "None", ""),
+            ("SUM", "Sum", "Sums the total value of all rows."),
+            ("AVERAGE", "Average", "Averages the total value of all rows."),
+            ("MIN", "Min", "Gets the minimum value of all rows."),
+            ("MAX", "Max", "Gets the maximum value of all rows."),
+        ]
+    )
 
 
 class CsvProperties(PropertyGroup):
@@ -96,4 +105,5 @@ class CsvProperties(PropertyGroup):
     should_show_settings: BoolProperty(default=False, name="Show Settings")
     should_show_sort: BoolProperty(default=False, name="Show Sorting")
     should_show_group: BoolProperty(default=False, name="Show Grouping")
+    should_show_summary: BoolProperty(default=False, name="Show Summary")
     should_load_from_memory: BoolProperty(default=False, name="Load from Memory")

src/blenderbim/blenderbim/bim/module/csv/ui.py

@@ -47,8 +47,6 @@ class BIM_PT_ifccsv(Panel):
             row.alignment = "RIGHT"
             row.operator("bim.import_csv_attributes", icon="IMPORT", text="")
             row.operator("bim.export_csv_attributes", icon="EXPORT", text="")
-        row.prop(props, "should_show_sort", icon="SORTSIZE", text="")
-        row.prop(props, "should_show_group", icon="OUTLINER_COLLECTION", text="")
         row.prop(props, "should_show_settings", icon="PREFERENCES", text="")
 
         if not IfcStore.get_file() or not props.should_load_from_memory:
@@ -85,17 +83,22 @@ class BIM_PT_ifccsv(Panel):
 
         row = layout.row(align=True)
         row.operator("bim.add_csv_attribute", icon="ADD")
+        row.prop(props, "should_show_sort", icon="SORTSIZE", text="")
+        row.prop(props, "should_show_group", icon="OUTLINER_COLLECTION", text="")
+        row.prop(props, "should_show_summary", icon="SYNTAX_ON", text="")
 
         for index, attribute in enumerate(props.csv_attributes):
             row = layout.row(align=True)
             row.prop(attribute, "name", text="")
+            row.prop(attribute, "header", text="")
             if props.should_show_sort:
                 row.prop(attribute, "sort", text="")
             if props.should_show_group:
                 row.prop(attribute, "group", text="")
                 if attribute.group == "VARIES":
                     row.prop(attribute, "varies_value", text="")
-            row.prop(attribute, "header", text="")
+            if props.should_show_summary:
+                row.prop(attribute, "summary", text="")
             row.operator("bim.remove_csv_attribute", icon="X", text="").index = index
 
         row = layout.row(align=True)

src/ifccsv/ifccsv.py

@@ -74,6 +74,7 @@ class IfcCsv:
         bool_false="NO",
         sort=None,
         groups=None,
+        summaries=None,
     ):
         self.ifc_file = ifc_file
         self.results = []
@@ -112,7 +113,23 @@ class IfcCsv:
             else:
                 self.headers.append(attribute)
 
-        if groups:
+        self.group_results(groups, attributes)
+        self.summarise_results(summaries, attributes)
+        self.sort_results(sort, attributes)
+
+        if format == "csv":
+            self.export_csv(output, delimiter=delimiter)
+        elif format == "ods":
+            self.export_ods(output, should_preserve_existing=should_preserve_existing)
+        elif format == "xlsx":
+            self.export_xlsx(output, should_preserve_existing=should_preserve_existing)
+        elif format == "pd":
+            return self.export_pd()
+
+    def group_results(self, groups, attributes):
+        if not groups:
+            return
+
         group_results = {}
         group_indices = {}
         group_values = {}
@@ -171,6 +188,44 @@ class IfcCsv:
 
         self.results = group_results.values()
 
+    def summarise_results(self, summaries, attributes):
+        self.summaries = [None] * len(attributes)
+
+        if not summaries:
+            return
+
+        summary_indices = {}
+        summary_values = {}
+
+        for summary in summaries:
+            index = attributes.index(summary["name"])
+            summary_indices.setdefault(summary["type"], [])
+            summary_indices[summary["type"]].append(index)
+
+        for row in self.results:
+            for summary_type, sis in summary_indices.items():
+                if summary_type in ("SUM", "AVERAGE", "MIN", "MAX"):
+                    for si in sis:
+                        summary_values.setdefault(si, [])
+                        try:
+                            value = float(row[si])
+                        except:
+                            continue
+                        summary_values[si].append(value)
+
+        for summary_type, sis in summary_indices.items():
+            for si in sis:
+                if summary_type == "SUM":
+                    self.summaries[si] = sum(summary_values[si])
+                elif summary_type == "AVERAGE":
+                    self.summaries[si] = mean(summary_values[si])
+                elif summary_type == "MIN":
+                    self.summaries[si] = min(summary_values[si])
+                elif summary_type == "MAX":
+                    self.summaries[si] = max(summary_values[si])
+                self.summaries[si] = summary_type.title() + ": " + str(self.summaries[si])
+
+    def sort_results(self, sort, attributes):
         if sort:
             def natural_sort(value):
                 if isinstance(value, str):
@@ -187,28 +242,24 @@ class IfcCsv:
         else:
             self.results = sorted(self.results, key=lambda x: x[1 if include_global_id else 0])
 
-        if format == "csv":
-            self.export_csv(output, delimiter=delimiter)
-        elif format == "ods":
-            self.export_ods(output, should_preserve_existing=should_preserve_existing)
-        elif format == "xlsx":
-            self.export_xlsx(output, should_preserve_existing=should_preserve_existing)
-        elif format == "pd":
-            return self.export_pd()
-
     def export_csv(self, output, delimiter=None):
         with open(output, "w", newline="", encoding="utf-8") as f:
             writer = csv.writer(f, delimiter=delimiter)
             writer.writerow(self.headers)
             for row in self.results:
                 writer.writerow(row)
+            if any([s for s in self.summaries if s is not None]):
+                writer.writerow(self.summaries)
 
     def export_ods(self, output, should_preserve_existing=False):
+        df = self.export_pd()
+        if self.summaries:
+            df.loc[df.shape[0]] = self.summaries
+
         if os.path.exists(output) and should_preserve_existing:
             ods_document = load(output)
             first_table = ods_document.spreadsheet.getElementsByType(Table)[0]
 
-            df = self.export_pd()
             for col_index, col in enumerate(df.columns):
                 # Assuming the first row of the table contains headers
                 header_cell = self.get_col(first_table.getElementsByType(TableRow)[0], col_index)
@@ -232,7 +283,6 @@ class IfcCsv:
 
             ods_document.save(output)
         else:
-            df = self.export_pd()
             df.to_excel(output, index=False, engine="odf")
 
     def set_cell_value(self, cell, value):
@@ -265,6 +315,10 @@ class IfcCsv:
         return new_cell
 
     def export_xlsx(self, output, should_preserve_existing=False):
+        df = self.export_pd()
+        if self.summaries:
+            df.loc[df.shape[0]] = self.summaries
+
         if os.path.exists(output):
             book = openpyxl.load_workbook(output)
             with pd.ExcelWriter(
@@ -273,10 +327,8 @@ class IfcCsv:
                 mode="a",
                 if_sheet_exists="overlay" if should_preserve_existing else "replace",
             ) as writer:
-                df = self.export_pd()
                 df.to_excel(writer, sheet_name=book.sheetnames[0], index=False)
         else:
-            df = self.export_pd()
             df.to_excel(output, index=False, engine="openpyxl")
 
     def export_pd(self):