Issue plotting large scatter plot data set

[bwebb702]

I'm attempting to create a scatter plot, but anytime I try to plot more than ~2900 points, the points turn in to lines. I suspect it's something with the backend, because if I zoom in on a large dataset far enough, it will display properly. I've tried setting the backend flag regarding the number of vertices, but I'm unsure of what else to look at. I'm a really new Go programmer, and a new programmer in general. Here's the code, with the result below:

Thanks for any help.

package main

import (
	imgui "cimgui-go"
	"math/rand"
	"os"
)

var (
	xt, yt     []float32
	window     imgui.GLFWwindow
	showWindow bool = true
)

func main() {
	imgui.SetAfterCreateContextHook(afterCreateContext)
	imgui.SetBeforeDestroyContextHook(beforeDestroyContext)
	imgui.SetTargetFPS(60)

	//2900
	xt = make([]float32, 3500)
	yt = make([]float32, 3500)

	for i := 0; i < len(xt); i++ {
		xt[i] = float32(rand.Intn(6000) + (-3000))
		yt[i] = float32(rand.Intn(6000) + (-3000))
	}

	window = imgui.CreateGlfwWindow("", 700, 700, 0)
	IO := imgui.CurrentIO()
	IO.SetBackendFlags(8)
	//debug.SetGCPercent(-1)
	//debug.SetMemoryLimit(math.MaxInt64)
	window.Run(loop)
}

func loop() {
	xtLen := int32(len(xt))

	imgui.SetNextWindowPosV(imgui.NewVec2(0, 0), imgui.CondOnce, imgui.NewVec2(0, 0))
	imgui.SetNextWindowSizeV(imgui.NewVec2(1400, 900), imgui.CondOnce)
	if !(imgui.BeginV("", &showWindow, 134218752)) {
		imgui.End()
		os.Exit(1)
	}

	if imgui.PlotBeginPlotV("", imgui.NewVec2(-1, -1), 0) {
		imgui.PlotPlotScatterFloatPtrFloatPtr("what", xt, yt, xtLen)
		//imgui.PlotPlotScatterFloatPtrFloatPtr("what", xt[0:1000], yt[0:1000], 1000)
		//imgui.PlotPlotScatterFloatPtrFloatPtr("what2", xt[1000:2000], yt[1000:2000], 1000)
		//imgui.PlotPlotScatterFloatPtrFloatPtr("what3", xt[2000:3000], yt[2000:3000], 1000)
		//imgui.PlotPlotScatterFloatPtrFloatPtr("what4", xt[3000:4000], yt[3000:4000], 1000)
		imgui.PlotEndPlot()
	}
	imgui.End()
	imgui.Refresh()

}

func afterCreateContext() {
	imgui.PlotCreateContext()
}

func beforeDestroyContext() {
	imgui.PlotDestroyContext()
}

https://i.imgur.com/BBJrdsn.jpg

[runrc]

The API calls you are using are not correct.
The following snippet shows how to populate and show a scatter plot.

basePos := imgui.MainViewport().Pos()
imgui.SetNextWindowPosV(imgui.NewVec2(basePos.X+400, basePos.Y+60), imgui.CondOnce, imgui.NewVec2(0, 0))
imgui.SetNextWindowSizeV(imgui.NewVec2(500, 300), imgui.CondOnce)
imgui.Begin("Plot window")
if implot.BeginPlotV("Plot", imgui.NewVec2(-1, -1), 0) {
	implot.PlotScatterFloatPtrFloatPtr("what", utils.SliceToPtr(xt), utils.SliceToPtr(yt), int32(len(xt)))
	implot.EndPlot()
}
imgui.End()