C# plplot 1 - Simple plot

Ref: http://plplot.sourceforge.net/docbook-manual/plplot-html-5.13.0/simple-graph.html

VS 2017 @ Windows 10 x64 (ASUS X450J)

In order to draw such a simple graph, it is necessary to call at least four of the PLplot functions:

1. plinit, to initialize PLplot.
2. plenv, to define the range and scale of the graph, and draw labels, axes, etc.
3. One or more calls to plline or plstring to draw lines or points as needed. Other more complex routines include plbin and plhist to draw histograms, and plerrx and plerry to draw error-bars.
4. plend, to close the plot.

1-1 New console project

1-2 nuget add  plplot (5.13.4 latest 5.13.7)

1-3 using PLplot;

1-4 example 0x1

1-5 error

System.BadImageFormatException: '試圖載入格式錯誤的程式。 (發生例外狀況於 HRESULT: 0x8007000B)'

1-6 Any cpu 改成 x64

double[] x = new double[10], y = new double[10];

            for (int i=0; i<10; i++)

            {

                x[i] = (double)i;

                y[i] = Math.Pow(x[i], 2);

            }

            var pl = new PLStream();

            pl.sdev("pngcairo");

            pl.sfnam("pngex1.png");

            pl.spal0("cmap0_alternate.pal");

            pl.init();

            pl.env(0, 10, 0, 100, AxesScale.Independent, AxisBox.BoxTicksLabelsAxes);

            pl.schr(0, 1.25);

            pl.lab("X-axis", "Y-axis", "Title");

            pl.col0(9);

            pl.line(x, y);

            pl.col0(3);

            pl.sym(x, y, '0');

            pl.eop();

            pl.gver(out var verText);

            //Console.ReadLine();

            Console.WriteLine("Showing chart...");

            var p = new Process();

            string chartFileNamePath = @".\" + "pngex1.png";

            p.StartInfo = new ProcessStartInfo(chartFileNamePath)

            {

                UseShellExecute = true

            };

            p.Start();

           // Console.ReadLine();

1-7 Console mode 程式需結束，否則會有一個大的黑色方塊在中下方。

1-8 座標軸標示無法處理中文。