diff options
Diffstat (limited to 'cmd/pggraph/main.go')
| -rw-r--r-- | cmd/pggraph/main.go | 22 |
1 files changed, 6 insertions, 16 deletions
diff --git a/cmd/pggraph/main.go b/cmd/pggraph/main.go index 9d9d26c..7d56145 100644 --- a/cmd/pggraph/main.go +++ b/cmd/pggraph/main.go @@ -33,7 +33,7 @@ this module. ` const middlePercent = 20 -const tickEvery = 30 +const numTicks = 30 // sideways flips an image sideways func sideways(img *image.Gray) *image.Gray { @@ -112,23 +112,13 @@ func graph(title string, points map[int]float64, w io.Writer) error { InnerSeries: middleSeries, } - width := xs[1] var ticks []chart.Tick - // if width is larger than tickEvery, just have a tick for each point, - // otherwise have a tick every tickEvery period - if width > tickEvery { - for _, v := range xs { - ticks = append(ticks, chart.Tick{float64(v), fmt.Sprintf("%d", v)}) - } - } else { - for i := 0; i < len(xs) - 1; i += tickEvery { - ticks = append(ticks, chart.Tick{float64(xs[i]), fmt.Sprintf("%d", xs[i])}) - } - if len(ticks) > 1 { - lastx := xs[len(xs) - 1] - ticks[len(ticks) - 1] = chart.Tick{float64(lastx), fmt.Sprintf("%d", lastx)} - } + var tickEvery = xs[len(xs) - 1] / numTicks + for i := 0; i < xs[len(xs) - 1]; i += tickEvery { + ticks = append(ticks, chart.Tick{float64(i), fmt.Sprintf("%d", i)}) } + lastx := xs[len(xs) - 1] + ticks[len(ticks) - 1] = chart.Tick{float64(lastx), fmt.Sprintf("%d", lastx)} graph := chart.Chart{ Title: title, |