54 lines
1.2 KiB
Matlab
54 lines
1.2 KiB
Matlab
function plot_3d_grid_data_scatter(nx, ny, nz, dx, dy, dz, data)
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% 绘制三维网格数据的点云图
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% 输入参数：
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% nx, ny, nz - 各方向的网格数
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% dx, dy, dz - 各方向的网格尺寸向量
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% data - 物理量数据，维度为(nx, ny, nz)
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% 计算每个网格点的坐标位置
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x = zeros(1, nx);
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x(1) = dx(1)/2;
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for i = 2:nx
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x(i) = x(i-1) + (dx(i-1) + dx(i))/2;
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end
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y = zeros(1, ny);
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y(1) = dy(1)/2;
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for i = 2:ny
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y(i) = y(i-1) + (dy(i-1) + dy(i))/2;
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end
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z = zeros(1, nz);
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z(1) = dz(1)/2;
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for i = 2:nz
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z(i) = z(i-1) + (dz(i-1) + dz(i))/2;
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end
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% 创建所有网格点的坐标矩阵
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[X, Y, Z] = ndgrid(x, y, z);
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% data已经是(nx, ny, nz)格式，与ndgrid输出匹配
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% 将数据展平用于scatter3
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X_flat = X(:);
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Y_flat = Y(:);
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Z_flat = Z(:);
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data_flat = data(:);
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% 创建新图形
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figure('Position', [100, 100, 800, 600]);
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% 使用scatter3绘制点云图
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scatter3(X_flat, Y_flat, Z_flat, 20, data_flat, 'filled');
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colorbar;
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colormap('jet');
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xlabel('X');
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ylabel('Y');
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zlabel('Z');
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title('三维网格物理量分布（点云图）');
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axis equal;
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view(3);
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grid on;
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% 添加透明度设置（可选，用于显示内部点）
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alpha(0.8);
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end |