add web server sample

LICENSE

@@ -1,6 +1,7 @@
 MIT License
 
 Copyright (c) 2016 William Charczuk.
+Copyright (c) 2024 Zeni Kim.
 
 Permission is hereby granted, free of charge, to any person obtaining a copy
 of this software and associated documentation files (the "Software"), to deal

README.md

@@ -1,12 +1,98 @@
 go-chart
 ========
 
-This project is archived!
+This project starts from a full copy from [https://git.smarteching.com/zeni/go-chart](https://git.smarteching.com/zeni/go-chart). 28 Oct 2024.
 
-I originally released this as a way to publish stock charts in slack bots. It was kind of fun at the time! I never anticipated that it would become heavily used, and as often happens with open source, I have a ton of time commitments elsewhere, and can't reasonbly devote enough time to this project to match the usage.
+-
 
-There have been a number of forks over time, I'd encourage you all to seek those out, or new charting libraries. 
+Master should now be on the v3.x codebase, which overhauls the api significantly. Per usual, see `examples` for more information.
 
-Best,
+# Installation
 
-- Will
+To install `chart` run the following:
+
+```bash
+> go get git.smarteching.com/zeni/go-chart/v2@latest
+```
+
+Most of the components are interchangeable so feel free to crib whatever you want.
+
+# Output Examples
+
+Spark Lines:
+
+![](https://git.smarteching.com/zeni/go-chart/raw/branch/main/_images/tvix_ltm.png)
+
+Single axis:
+
+![](https://git.smarteching.com/zeni/go-chart/raw/branch/main/_images/goog_ltm.png)
+
+Two axis:
+
+![](https://git.smarteching.com/zeni/go-chart/raw/branch/main/_images/two_axis.png)
+
+# Other Chart Types
+
+Pie Chart:
+
+![](https://git.smarteching.com/zeni/go-chart/raw/branch/main/_images/pie_chart.png)
+
+The code for this chart can be found in `examples/pie_chart/main.go`.
+
+Stacked Bar:
+
+![](https://git.smarteching.com/zeni/go-chart/raw/branch/main/_images/stacked_bar.png)
+
+The code for this chart can be found in `examples/stacked_bar/main.go`.
+
+# Code Examples
+
+Actual chart configurations and examples can be found in the `./examples/` directory. They are simple CLI programs that write to `output.png` (they are also updated with `go generate`.
+
+If folder ends in "web", has web servers, so start them with `go run main.go` then access `http://localhost:8080` to see the output.
+
+# Usage
+
+Everything starts with the `chart.Chart` object. The bare minimum to draw a chart would be the following:
+
+```golang
+
+import (
+    ...
+    "bytes"
+    ...
+    "git.smarteching.com/zeni/go-chart/v2" //exposes "chart"
+)
+
+graph := chart.Chart{
+    Series: []chart.Series{
+        chart.ContinuousSeries{
+            XValues: []float64{1.0, 2.0, 3.0, 4.0},
+            YValues: []float64{1.0, 2.0, 3.0, 4.0},
+        },
+    },
+}
+
+buffer := bytes.NewBuffer([]byte{})
+err := graph.Render(chart.PNG, buffer)
+```
+
+Explanation of the above: A `chart` can have many `Series`, a `Series` is a collection of things that need to be drawn according to the X range and the Y range(s).
+
+Here, we have a single series with x range values as float64s, rendered to a PNG. Note; we can pass any type of `io.Writer` into `Render(...)`, meaning that we can render the chart to a file or a resonse or anything else that implements `io.Writer`.
+
+# API Overview
+
+Everything on the `chart.Chart` object has defaults that can be overriden. Whenever a developer sets a property on the chart object, it is to be assumed that value will be used instead of the default.
+
+The best way to see the api in action is to look at the examples in the `./_examples/` directory.
+
+# Design Philosophy
+
+I wanted to make a charting library that used only native golang, that could be stood up on a server (i.e. it had built in fonts).
+
+The goal with the API itself is to have the "zero value be useful", and to require the user to not code more than they absolutely needed.
+
+# Contributions
+
+Contributions are welcome though this library is in a holding pattern for the forseable future.

annotation_series_test.go

@@ -4,8 +4,8 @@ import (
 	"image/color"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/drawing"
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestAnnotationSeriesMeasure(t *testing.T) {

bar_chart_test.go

@@ -5,7 +5,7 @@ import (
 	"math"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestBarChartRender(t *testing.T) {

bollinger_band_series_test.go

@@ -5,7 +5,7 @@ import (
 	"math"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestBollingerBandSeries(t *testing.T) {

box_test.go

@@ -4,7 +4,7 @@ import (
 	"math"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestBoxClone(t *testing.T) {

chart_test.go

@@ -8,8 +8,8 @@ import (
 	"testing"
 	"time"
 
-	"github.com/wcharczuk/go-chart/v2/drawing"
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestChartGetDPI(t *testing.T) {

cmd/chart/main.go

@@ -7,7 +7,7 @@ import (
 	"os"
 	"strings"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 var (

colors.go

@@ -1,6 +1,6 @@
 package chart
 
-import "github.com/wcharczuk/go-chart/v2/drawing"
+import "git.smarteching.com/zeni/go-chart/v2/drawing"
 
 var (
 	// ColorWhite is white.

concat_series_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestConcatSeries(t *testing.T) {

continuous_range_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestRangeTranslate(t *testing.T) {

continuous_series_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestContinuousSeries(t *testing.T) {

donut_chart_test.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestDonutChart(t *testing.T) {

drawing/color_test.go

@@ -6,7 +6,7 @@ import (
 
 	"image/color"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestColorFromHex(t *testing.T) {

drawing/curve_test.go

@@ -3,7 +3,7 @@ package drawing
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 type point struct {

ema_series_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 var (

examples/annotations/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/axes/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	chart "github.com/wcharczuk/go-chart/v2"
+	chart "git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/axes_labels/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	chart "github.com/wcharczuk/go-chart/v2"
+	chart "git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/bar_chart/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/bar_chart_base_value/main.go

@@ -5,8 +5,8 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func main() {

examples/bar_chart_web/main.go

@@ -0,0 +1,55 @@
+package main
+
+//go:generate go run main.go
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+	"os"
+
+	"git.smarteching.com/zeni/go-chart/v2"
+)
+
+func drawChart(res http.ResponseWriter, req *http.Request) {
+	graph := chart.BarChart{
+		Title: "Test Bar Chart",
+		Background: chart.Style{
+			Padding: chart.Box{
+				Top: 40,
+			},
+		},
+		Height:   512,
+		BarWidth: 60,
+		Bars: []chart.Value{
+			{Value: 5.25, Label: "Blue"},
+			{Value: 4.88, Label: "Green"},
+			{Value: 4.74, Label: "Gray"},
+			{Value: 3.22, Label: "Orange"},
+			{Value: 3, Label: "Test"},
+			{Value: 2.27, Label: "??"},
+			{Value: 1, Label: "!!"},
+		},
+	}
+
+	res.Header().Set("Content-Type", "image/png")
+	err := graph.Render(chart.PNG, res)
+	if err != nil {
+		fmt.Printf("Error rendering chart: %v\n", err)
+	}
+
+}
+
+func port() string {
+	if len(os.Getenv("PORT")) > 0 {
+		return os.Getenv("PORT")
+	}
+	return "8080"
+}
+
+func main() {
+	listenPort := fmt.Sprintf(":%s", port())
+	fmt.Printf("Listening on %s\n", listenPort)
+	http.HandleFunc("/", drawChart)
+	log.Fatal(http.ListenAndServe(listenPort, nil))
+}

examples/basic/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/benchmark_line_charts/main.go

@@ -8,7 +8,7 @@ import (
 	"os"
 	"time"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func random(min, max float64) float64 {

examples/css_classes/main.go

@@ -5,7 +5,7 @@ import (
 	"log"
 	"net/http"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 // Note: Additional examples on how to add Stylesheets are in the custom_stylesheets example

examples/custom_formatters/main.go

@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/custom_padding/main.go

@@ -5,8 +5,8 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func main() {

examples/custom_ranges/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/custom_styles/main.go

@@ -5,8 +5,8 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func main() {

examples/custom_stylesheets/main.go

@@ -5,7 +5,7 @@ import (
 	"log"
 	"net/http"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 const style = "svg .background { fill: white; }" +

examples/custom_ticks/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/descending/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/donut_chart/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/horizontal_stacked_bar/main.go

@@ -3,8 +3,8 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func main() {

examples/image_writer/main.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"log"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/legend/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	chart "github.com/wcharczuk/go-chart/v2"
+	chart "git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/legend_left/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/linear_regression/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	chart "github.com/wcharczuk/go-chart/v2"
+	chart "git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/logarithmic_axes/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/min_max/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/pie_chart/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/pie_chart_web/main.go

@@ -0,0 +1,55 @@
+package main
+
+import (
+	"fmt"
+	"log"
+	"net/http"
+
+	"git.smarteching.com/zeni/go-chart/v2"
+)
+
+func drawChart(res http.ResponseWriter, req *http.Request) {
+	pie := chart.PieChart{
+		Width:  512,
+		Height: 512,
+		Values: []chart.Value{
+			{Value: 5, Label: "Blue"},
+			{Value: 5, Label: "Green"},
+			{Value: 4, Label: "Gray"},
+			{Value: 4, Label: "Orange"},
+			{Value: 3, Label: "Deep Blue"},
+			{Value: 3, Label: "??"},
+			{Value: 1, Label: "!!"},
+		},
+	}
+
+	res.Header().Set("Content-Type", "image/png")
+	err := pie.Render(chart.PNG, res)
+	if err != nil {
+		fmt.Printf("Error rendering pie chart: %v\n", err)
+	}
+}
+
+func drawChartRegression(res http.ResponseWriter, req *http.Request) {
+	pie := chart.PieChart{
+		Width:  512,
+		Height: 512,
+		Values: []chart.Value{
+			{Value: 5, Label: "Blue"},
+			{Value: 2, Label: "Two"},
+			{Value: 1, Label: "One"},
+		},
+	}
+
+	res.Header().Set("Content-Type", chart.ContentTypeSVG)
+	err := pie.Render(chart.SVG, res)
+	if err != nil {
+		fmt.Printf("Error rendering pie chart: %v\n", err)
+	}
+}
+
+func main() {
+	http.HandleFunc("/", drawChart)
+	http.HandleFunc("/reg", drawChartRegression)
+	log.Fatal(http.ListenAndServe(":8080", nil))
+}

examples/poly_regression/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	chart "github.com/wcharczuk/go-chart/v2"
+	chart "git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/request_timings/main.go

@@ -9,7 +9,7 @@ import (
 	"strconv"
 	"time"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/rerender/main.go

@@ -6,7 +6,7 @@ import (
 	"sync"
 	"time"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 var lock sync.Mutex

examples/scatter/main.go

@@ -6,8 +6,8 @@ import (
 
 	_ "net/http/pprof"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func drawChart(res http.ResponseWriter, req *http.Request) {

examples/simple_moving_average/main.go

@@ -5,7 +5,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/stacked_bar/main.go

@@ -3,7 +3,7 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/stacked_bar_labels/main.go

@@ -3,8 +3,8 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func main() {

examples/stock_analysis/main.go

@@ -6,8 +6,8 @@ import (
 	"os"
 	"time"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func main() {

examples/text_rotation/main.go

@@ -5,8 +5,8 @@ package main
 import (
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 func main() {

examples/timeseries/main.go

@@ -4,7 +4,7 @@ import (
 	"net/http"
 	"time"
 
-	chart "github.com/wcharczuk/go-chart/v2"
+	chart "git.smarteching.com/zeni/go-chart/v2"
 )
 
 func drawChart(res http.ResponseWriter, req *http.Request) {

examples/twoaxis/main.go

@@ -6,7 +6,7 @@ import (
 	"fmt"
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

examples/twopoint/main.go

@@ -7,7 +7,7 @@ import (
 	"log"
 	"os"
 
-	"github.com/wcharczuk/go-chart/v2"
+	"git.smarteching.com/zeni/go-chart/v2"
 )
 
 func main() {

first_value_annotation_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestFirstValueAnnotation(t *testing.T) {

font.go

@@ -3,8 +3,8 @@ package chart
 import (
 	"sync"
 
+	"git.smarteching.com/zeni/go-chart/v2/roboto"
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/roboto"
 )
 
 var (

go.mod

@@ -1,8 +1,8 @@
-module github.com/wcharczuk/go-chart/v2
+module git.smarteching.com/zeni/go-chart/v2
 
-go 1.15
+go 1.23.1
 
 require (
 	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0
-	golang.org/x/image v0.18.0
+	golang.org/x/image v0.21.0
 )

go.sum

@@ -1,64 +1,4 @@
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
-github.com/google/go-cmp v0.6.0/go.mod h1:17dUlkBOakJ0+DkrSSNjCkIjxS6bF9zb3elmeNGIjoY=
-github.com/yuin/goldmark v1.4.13/go.mod h1:6yULJ656Px+3vBD8DxQVa3kxgyrAnzto9xy5taEt/CY=
-golang.org/x/crypto v0.0.0-20190308221718-c2843e01d9a2/go.mod h1:djNgcEr1/C05ACkg1iLfiJU5Ep61QUkGW8qpdssI0+w=
-golang.org/x/crypto v0.0.0-20210921155107-089bfa567519/go.mod h1:GvvjBRRGRdwPK5ydBHafDWAxML/pGHZbMvKqRZ5+Abc=
-golang.org/x/crypto v0.13.0/go.mod h1:y6Z2r+Rw4iayiXXAIxJIDAJ1zMW4yaTpebo8fPOliYc=
-golang.org/x/crypto v0.19.0/go.mod h1:Iy9bg/ha4yyC70EfRS8jz+B6ybOBKMaSxLj6P6oBDfU=
-golang.org/x/crypto v0.23.0/go.mod h1:CKFgDieR+mRhux2Lsu27y0fO304Db0wZe70UKqHu0v8=
-golang.org/x/image v0.18.0 h1:jGzIakQa/ZXI1I0Fxvaa9W7yP25TqT6cHIHn+6CqvSQ=
-golang.org/x/image v0.18.0/go.mod h1:4yyo5vMFQjVjUcVk4jEQcU9MGy/rulF5WvUILseCM2E=
-golang.org/x/mod v0.6.0-dev.0.20220419223038-86c51ed26bb4/go.mod h1:jJ57K6gSWd91VN4djpZkiMVwK6gcyfeH4XE8wZrZaV4=
-golang.org/x/mod v0.8.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/mod v0.12.0/go.mod h1:iBbtSCu2XBx23ZKBPSOrRkjjQPZFPuis4dIYUhu/chs=
-golang.org/x/mod v0.15.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/mod v0.17.0/go.mod h1:hTbmBsO62+eylJbnUtE2MGJUyE7QWk4xUqPFrRgJ+7c=
-golang.org/x/net v0.0.0-20190620200207-3b0461eec859/go.mod h1:z5CRVTTTmAJ677TzLLGU+0bjPO0LkuOLi4/5GtJWs/s=
-golang.org/x/net v0.0.0-20210226172049-e18ecbb05110/go.mod h1:m0MpNAwzfU5UDzcl9v0D8zg8gWTRqZa9RBIspLL5mdg=
-golang.org/x/net v0.0.0-20220722155237-a158d28d115b/go.mod h1:XRhObCWvk6IyKnWLug+ECip1KBveYUHfp+8e9klMJ9c=
-golang.org/x/net v0.6.0/go.mod h1:2Tu9+aMcznHK/AK1HMvgo6xiTLG5rD5rZLDS+rp2Bjs=
-golang.org/x/net v0.10.0/go.mod h1:0qNGK6F8kojg2nk9dLZ2mShWaEBan6FAoqfSigmmuDg=
-golang.org/x/net v0.15.0/go.mod h1:idbUs1IY1+zTqbi8yxTbhexhEEk5ur9LInksu6HrEpk=
-golang.org/x/net v0.21.0/go.mod h1:bIjVDfnllIU7BJ2DNgfnXvpSvtn8VRwhlsaeUTyUS44=
-golang.org/x/net v0.25.0/go.mod h1:JkAGAh7GEvH74S6FOH42FLoXpXbE/aqXSrIQjXgsiwM=
-golang.org/x/sync v0.0.0-20190423024810-112230192c58/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.0.0-20220722155255-886fb9371eb4/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.1.0/go.mod h1:RxMgew5VJxzue5/jJTE5uejpjVlOe/izrB70Jof72aM=
-golang.org/x/sync v0.3.0/go.mod h1:FU7BRWz2tNW+3quACPkgCx/L+uEAv1htQ0V83Z9Rj+Y=
-golang.org/x/sync v0.6.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk=
-golang.org/x/sys v0.0.0-20190215142949-d0b11bdaac8a/go.mod h1:STP8DvDyc/dI5b8T5hshtkjS+E42TnysNCUPdjciGhY=
-golang.org/x/sys v0.0.0-20201119102817-f84b799fce68/go.mod h1:h1NjWce9XRLGQEsW7wpKNCjG9DtNlClVuFLEZdDNbEs=
-golang.org/x/sys v0.0.0-20210615035016-665e8c7367d1/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220520151302-bc2c85ada10a/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.0.0-20220722155257-8c9f86f7a55f/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.5.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.8.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.12.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
-golang.org/x/sys v0.17.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/sys v0.20.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
-golang.org/x/telemetry v0.0.0-20240228155512-f48c80bd79b2/go.mod h1:TeRTkGYfJXctD9OcfyVLyj2J3IxLnKwHJR8f4D8a3YE=
-golang.org/x/term v0.0.0-20201126162022-7de9c90e9dd1/go.mod h1:bj7SfCRtBDWHUb9snDiAeCFNEtKQo2Wmx5Cou7ajbmo=
-golang.org/x/term v0.0.0-20210927222741-03fcf44c2211/go.mod h1:jbD1KX2456YbFQfuXm/mYQcufACuNUgVhRMnK/tPxf8=
-golang.org/x/term v0.5.0/go.mod h1:jMB1sMXY+tzblOD4FWmEbocvup2/aLOaQEp7JmGp78k=
-golang.org/x/term v0.8.0/go.mod h1:xPskH00ivmX89bAKVGSKKtLOWNx2+17Eiy94tnKShWo=
-golang.org/x/term v0.12.0/go.mod h1:owVbMEjm3cBLCHdkQu9b1opXd4ETQWc3BhuQGKgXgvU=
-golang.org/x/term v0.17.0/go.mod h1:lLRBjIVuehSbZlaOtGMbcMncT+aqLLLmKrsjNrUguwk=
-golang.org/x/term v0.20.0/go.mod h1:8UkIAJTvZgivsXaD6/pH6U9ecQzZ45awqEOzuCvwpFY=
-golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
-golang.org/x/text v0.3.3/go.mod h1:5Zoc/QRtKVWzQhOtBMvqHzDpF6irO9z98xDceosuGiQ=
-golang.org/x/text v0.3.7/go.mod h1:u+2+/6zg+i71rQMx5EYifcz6MCKuco9NR6JIITiCfzQ=
-golang.org/x/text v0.7.0/go.mod h1:mrYo+phRRbMaCq/xk9113O4dZlRixOauAjOtrjsXDZ8=
-golang.org/x/text v0.9.0/go.mod h1:e1OnstbJyHTd6l/uOt8jFFHp6TRDWZR/bV3emEE/zU8=
-golang.org/x/text v0.13.0/go.mod h1:TvPlkZtksWOMsz7fbANvkp4WM8x/WCo/om8BMLbz+aE=
-golang.org/x/text v0.14.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
-golang.org/x/text v0.15.0/go.mod h1:18ZOQIKpY8NJVqYksKHtTdi31H5itFRjB5/qKTNYzSU=
-golang.org/x/text v0.16.0/go.mod h1:GhwF1Be+LQoKShO3cGOHzqOgRrGaYc9AvblQOmPVHnI=
-golang.org/x/tools v0.0.0-20180917221912-90fa682c2a6e/go.mod h1:n7NCudcB/nEzxVGmLbDWY5pfWTLqBcC2KZ6jyYvM4mQ=
-golang.org/x/tools v0.0.0-20191119224855-298f0cb1881e/go.mod h1:b+2E5dAYhXwXZwtnZ6UAqBI28+e2cm9otk0dWdXHAEo=
-golang.org/x/tools v0.1.12/go.mod h1:hNGJHUnrk76NpqgfD5Aqm5Crs+Hm0VOH/i9J2+nxYbc=
-golang.org/x/tools v0.6.0/go.mod h1:Xwgl3UAJ/d3gWutnCtw505GrjyAbvKui8lOU390QaIU=
-golang.org/x/tools v0.13.0/go.mod h1:HvlwmtVNQAhOuCjW7xxvovg8wbNq7LwfXh/k7wXUl58=
-golang.org/x/tools v0.21.1-0.20240508182429-e35e4ccd0d2d/go.mod h1:aiJjzUbINMkxbQROHiO6hDPo2LHcIPhhQsa9DLh0yGk=
-golang.org/x/xerrors v0.0.0-20190717185122-a985d3407aa7/go.mod h1:I/5z698sn9Ka8TeJc9MKroUUfqBBauWjQqLJ2OPfmY0=
+golang.org/x/image v0.21.0 h1:c5qV36ajHpdj4Qi0GnE0jUc/yuo33OLFaa0d+crTD5s=
+golang.org/x/image v0.21.0/go.mod h1:vUbsLavqK/W303ZroQQVKQ+Af3Yl6Uz1Ppu5J/cLz78=

grid_line_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestGenerateGridLines(t *testing.T) {

histogram_series_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestHistogramSeries(t *testing.T) {

jet.go

@@ -1,6 +1,6 @@
 package chart
 
-import "github.com/wcharczuk/go-chart/v2/drawing"
+import "git.smarteching.com/zeni/go-chart/v2/drawing"
 
 // Jet is a color map provider based on matlab's jet color map.
 func Jet(v, vmin, vmax float64) drawing.Color {

last_value_annotation_series_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestLastValueAnnotationSeries(t *testing.T) {

legend.go

@@ -1,7 +1,7 @@
 package chart
 
 import (
-	"github.com/wcharczuk/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 )
 
 // Legend returns a legend renderable function.

legend_test.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestLegend(t *testing.T) {

linear_regression_series_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestLinearRegressionSeries(t *testing.T) {

logarithmic_range_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestLogRangeTranslate(t *testing.T) {

macd_series_test.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 var (

matrix/matrix_test.go

@@ -3,7 +3,7 @@ package matrix
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestNew(t *testing.T) {

matrix/regression_test.go

@@ -3,7 +3,7 @@ package matrix
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestPoly(t *testing.T) {

percent_change_series_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestPercentageDifferenceSeries(t *testing.T) {

pie_chart_test.go

@@ -4,7 +4,7 @@ import (
 	"bytes"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestPieChart(t *testing.T) {

polynomial_regression_series.go

@@ -4,7 +4,7 @@ import (
 	"fmt"
 	"math"
 
-	"github.com/wcharczuk/go-chart/v2/matrix"
+	"git.smarteching.com/zeni/go-chart/v2/matrix"
 )
 
 // Interface Assertions.

polynomial_regression_test.go

@@ -3,8 +3,8 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/matrix"
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/matrix"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestPolynomialRegression(t *testing.T) {

raster_renderer.go

@@ -6,8 +6,8 @@ import (
 	"io"
 	"math"
 
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/drawing"
 )
 
 // PNG returns a new png/raster renderer.

renderer.go

@@ -3,8 +3,8 @@ package chart
 import (
 	"io"
 
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/drawing"
 )
 
 // Renderer represents the basic methods required to draw a chart.

seq_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestSeqEach(t *testing.T) {

sma_series_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 type mockValuesProvider struct {

stringutil_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestSplitCSV(t *testing.T) {

style.go

@@ -4,8 +4,8 @@ import (
 	"fmt"
 	"strings"
 
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/drawing"
 )
 
 const (

style_test.go

@@ -3,9 +3,9 @@ package chart
 import (
 	"testing"
 
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/drawing"
-	"github.com/wcharczuk/go-chart/v2/testutil"
 )
 
 func TestStyleIsZero(t *testing.T) {

text_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestTextWrapWord(t *testing.T) {

tick_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestGenerateContinuousTicks(t *testing.T) {

time_series_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestTimeSeriesGetValue(t *testing.T) {

value_buffer_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestBuffer(t *testing.T) {

value_formatter_test.go

@@ -4,7 +4,7 @@ import (
 	"testing"
 	"time"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestTimeValueFormatterWithFormat(t *testing.T) {

value_provider.go

@@ -1,6 +1,6 @@
 package chart
 
-import "github.com/wcharczuk/go-chart/v2/drawing"
+import "git.smarteching.com/zeni/go-chart/v2/drawing"
 
 // ValuesProvider is a type that produces values.
 type ValuesProvider interface {

value_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestValuesValues(t *testing.T) {

vector_renderer.go

@@ -9,8 +9,8 @@ import (
 
 	"golang.org/x/image/font"
 
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
 	"github.com/golang/freetype/truetype"
-	"github.com/wcharczuk/go-chart/v2/drawing"
 )
 
 // SVG returns a new png/raster renderer.

vector_renderer_test.go

@@ -6,8 +6,8 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/drawing"
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/drawing"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestVectorRendererPath(t *testing.T) {

viridis.go

@@ -1,6 +1,6 @@
 package chart
 
-import "github.com/wcharczuk/go-chart/v2/drawing"
+import "git.smarteching.com/zeni/go-chart/v2/drawing"
 
 var viridisColors = [256]drawing.Color{
 	{R: 0x44, G: 0x1, B: 0x54, A: 0xff},

xaxis_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestXAxisGetTicks(t *testing.T) {

yaxis_test.go

@@ -3,7 +3,7 @@ package chart
 import (
 	"testing"
 
-	"github.com/wcharczuk/go-chart/v2/testutil"
+	"git.smarteching.com/zeni/go-chart/v2/testutil"
 )
 
 func TestYAxisGetTicks(t *testing.T) {