Improve float formatting in CSV output (#64)

mlange-42 · May 15, 2024 · ccf4255 · ccf4255
1 parent e83fbcf
commit ccf4255
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Showing 3 changed files with 10 additions and 2 deletions.
diff --git a/CHANGELOG.md b/CHANGELOG.md
@@ -1,5 +1,11 @@
 # Changelog
 
+## [[v0.8.1]](https://github.com/mlange-42/arche-model/compare/v0.8.0...v0.8.1)
+
+### Other
+
+* Improved float formatting in CSV output (#64)
+
 ## [[v0.8.0]](https://github.com/mlange-42/arche-model/compare/v0.7.0...0.8.0)
 
 ### Features

diff --git a/reporter/csv.go b/reporter/csv.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strconv"
 	"strings"
 
 	"github.com/mlange-42/arche-model/observer"
@@ -60,7 +61,7 @@ func (s *CSV) Update(w *ecs.World) {
 		s.builder.Reset()
 		fmt.Fprintf(&s.builder, "%d%s", s.step, s.Sep)
 		for i, v := range values {
-			fmt.Fprintf(&s.builder, "%f", v)
+			fmt.Fprint(&s.builder, strconv.FormatFloat(v, 'f', -1, 64))
 			if i < len(values)-1 {
 				fmt.Fprint(&s.builder, s.Sep)
 			}

diff --git a/reporter/csv_snaphot.go b/reporter/csv_snaphot.go
@@ -4,6 +4,7 @@ import (
 	"fmt"
 	"os"
 	"path/filepath"
+	"strconv"
 	"strings"
 
 	"github.com/mlange-42/arche-model/observer"
@@ -67,7 +68,7 @@ func (s *SnapshotCSV) Update(w *ecs.World) {
 		s.builder.Reset()
 		for _, row := range values {
 			for i, v := range row {
-				fmt.Fprintf(&s.builder, "%f", v)
+				fmt.Fprint(&s.builder, strconv.FormatFloat(v, 'f', -1, 64))
 				if i < len(row)-1 {
 					fmt.Fprint(&s.builder, s.Sep)
 				}