gcf:获取当前显示图像的句柄: 默认 plot 的 position 是 [232 246 560 420] 0. save >> A = randn(3, 4); >> B = 'hello world'; >> save 'data.mat' A B % 将多个对象保存进 data.mat 文件中 >> save data A B % 两个保存语句是等价的: 1. imwrite.saveas.print I = imread('./name.bmp'
计算次幂 Trial>> 3 ^ 2 % 3 raised to the power of 2 ans = 9 MATLAB 计算正弦值 Trial>> sin(pi /2) % sine of angle 90o ans = 1 MATLAB 除以零 Trial>> 7/0 % Divide by zero ans = Inf MATLAB 数学计算表达式 Trial>> 123 * 23.259 ans = 2.8609e+03 MATLAB MATLA
代码如下: using System.Runtime.InteropServices; using System.Drawing.Imaging; [System.Runtime.InteropServices.DllImportAttribute("gdi32.dll")] private static extern bool BitBlt( IntPtr hdcDest, // 目标 DC的句柄 int nXDest, int nYDest, int nWidth, int nHe