From 8922e7ea1995f755a18eb45a4d52f78718c5c57b Mon Sep 17 00:00:00 2001
From: Cloakd <2733949+cloakd@users.noreply.github.com>
Date: Wed, 15 Oct 2025 13:18:37 +0100
Subject: [PATCH 1/2] Respect precision when set by caller for all numbers

---
 asciigraph.go | 28 +++++++++++++++-------------
 1 file changed, 15 insertions(+), 13 deletions(-)

diff --git a/asciigraph.go b/asciigraph.go
index 608eb6a..60417c7 100644
--- a/asciigraph.go
+++ b/asciigraph.go
@@ -104,21 +104,23 @@ func PlotMany(data [][]float64, options ...Option) string {
 	}
 
 	precision := config.Precision
-	logMaximum = math.Log10(math.Max(math.Abs(maximum), math.Abs(minimum))) //to find number of zeros after decimal
-	if minimum == float64(0) && maximum == float64(0) {
-		logMaximum = float64(-1)
-	}
+	if precision == 0 {
+		logMaximum = math.Log10(math.Max(math.Abs(maximum), math.Abs(minimum))) //to find number of zeros after decimal
+		if minimum == float64(0) && maximum == float64(0) {
+			logMaximum = float64(-1)
+		}
 
-	if logMaximum < 0 {
-		// negative log
-		if math.Mod(logMaximum, 1) != 0 {
-			// non-zero digits after decimal
-			precision += uint(math.Abs(logMaximum))
-		} else {
-			precision += uint(math.Abs(logMaximum) - 1.0)
+		if logMaximum < 0 {
+			// negative log
+			if math.Mod(logMaximum, 1) != 0 {
+				// non-zero digits after decimal
+				precision += uint(math.Abs(logMaximum))
+			} else {
+				precision += uint(math.Abs(logMaximum) - 1.0)
+			}
+		} else if logMaximum > 2 {
+			precision = 0
 		}
-	} else if logMaximum > 2 {
-		precision = 0
 	}
 
 	maxNumLength := len(fmt.Sprintf("%0.*f", precision, maximum))

From e5b6833470c4df1d8a55d2a2482c5bfa942cb598 Mon Sep 17 00:00:00 2001
From: Cloakd <thecloakdone@gmail.com>
Date: Wed, 15 Oct 2025 13:35:58 +0100
Subject: [PATCH 2/2] Fix tests vs option

---
 asciigraph.go | 36 +++++++++++++++++++-----------------
 options.go    |  4 ++--
 2 files changed, 21 insertions(+), 19 deletions(-)

diff --git a/asciigraph.go b/asciigraph.go
index 60417c7..d018ed1 100644
--- a/asciigraph.go
+++ b/asciigraph.go
@@ -17,7 +17,7 @@ func PlotMany(data [][]float64, options ...Option) string {
 	var logMaximum float64
 	config := configure(config{
 		Offset:    3,
-		Precision: 2,
+		Precision: nil,
 	}, options)
 
 	// Create a deep copy of the input data
@@ -103,24 +103,26 @@ func PlotMany(data [][]float64, options ...Option) string {
 		plot[i] = line
 	}
 
-	precision := config.Precision
-	if precision == 0 {
-		logMaximum = math.Log10(math.Max(math.Abs(maximum), math.Abs(minimum))) //to find number of zeros after decimal
-		if minimum == float64(0) && maximum == float64(0) {
-			logMaximum = float64(-1)
-		}
+	var precision uint = 2 //Default precision to maintain backwards compatibility
+	if config.Precision != nil {
+		precision = *config.Precision
+	}
 
-		if logMaximum < 0 {
-			// negative log
-			if math.Mod(logMaximum, 1) != 0 {
-				// non-zero digits after decimal
-				precision += uint(math.Abs(logMaximum))
-			} else {
-				precision += uint(math.Abs(logMaximum) - 1.0)
-			}
-		} else if logMaximum > 2 {
-			precision = 0
+	logMaximum = math.Log10(math.Max(math.Abs(maximum), math.Abs(minimum))) //to find number of zeros after decimal
+	if minimum == float64(0) && maximum == float64(0) {
+		logMaximum = float64(-1)
+	}
+
+	if logMaximum < 0 {
+		// negative log
+		if math.Mod(logMaximum, 1) != 0 {
+			// non-zero digits after decimal
+			precision += uint(math.Abs(logMaximum))
+		} else {
+			precision += uint(math.Abs(logMaximum) - 1.0)
 		}
+	} else if logMaximum > 2 && config.Precision == nil {
+		precision = 0
 	}
 
 	maxNumLength := len(fmt.Sprintf("%0.*f", precision, maximum))
diff --git a/options.go b/options.go
index 17dd4d0..ae49ef1 100644
--- a/options.go
+++ b/options.go
@@ -15,7 +15,7 @@ type config struct {
 	LowerBound, UpperBound *float64
 	Offset                 int
 	Caption                string
-	Precision              uint
+	Precision              *uint
 	CaptionColor           AnsiColor
 	AxisColor              AnsiColor
 	LabelColor             AnsiColor
@@ -80,7 +80,7 @@ func Offset(o int) Option {
 
 // Precision sets the graphs precision.
 func Precision(p uint) Option {
-	return optionFunc(func(c *config) { c.Precision = p })
+	return optionFunc(func(c *config) { c.Precision = &p })
 }
 
 // Caption sets the graphs caption.