Loading... 数据: data.txt ```txt 3 57.6 6 41.9 9 31.0 12 22.7 15 16.6 18 12.2 21 8.9 24 6.5 ``` 代码: ```cpp void a() { TCanvas *c = new TCanvas("c1", "Data Analysis", 500, 500); TGraph* gr = new TGraph("data.txt"); // 数据 gr->SetMarkerStyle(2); gr->SetMarkerSize(2); gr->SetMarkerColor(2); gr->Draw("AP"); } ```![c1.png][1] [1]: https://blog.literalkernel.work/usr/uploads/2020/04/4059709387.png Last modification：June 28th, 2021 at 09:56 pm © 允许规范转载 Support 如果觉得我的文章对你有用，请随意赞赏