Copy Code Copy Command Calculate the 2-D gradient of xe−x2−y2 on a grid. Get x = -2:0.2:2; y = x'; z = x .* exp(-x.^2 - y.^2); [px,py] = gradient(z); Plot the contour lines and vectors in the same figure. Get figure contour(x,y,z) hold on quiver(x...
函数的数值梯度是根据函数在某些点的已知值预测每个维度上的偏导数值的一种方式。 对于有两个变量的函数F(x,y),梯度为 ∇F=∂F∂xˆi+∂F∂yˆj . 可将梯度视为指向F的值递增方向的向量集合。在 MATLAB®中,您可以计算有任意多个变量的函数的数值梯度。对于有N个变量的函数F(x,y,z, ...
Copy Code Copy Command Calculate the 2-D gradient of xe−x2−y2 on a grid. Get x = -2:0.2:2; y = x'; z = x .* exp(-x.^2 - y.^2); [px,py] = gradient(z); Plot the contour lines and vectors in the same figure. Get figure contour(x,y,z) hold on quiver(x...
Copy Code Copy Command Calculate the 2-D gradient of xe−x2−y2 on a grid. Get x = -2:0.2:2; y = x'; z = x .* exp(-x.^2 - y.^2); [px,py] = gradient(z); Plot the contour lines and vectors in the same figure. Get figure contour(x,y,z) hold on quiver(x...
Copy Code Copy Command Calculate the 2-D gradient of xe−x2−y2 on a grid. Get x = -2:0.2:2; y = x'; z = x .* exp(-x.^2 - y.^2); [px,py] = gradient(z); Plot the contour lines and vectors in the same figure. Get figure contour(x,y,z) hold on quiver(x...
Copy Code Copy Command Calculate the 2-D gradient of xe−x2−y2 on a grid. Get x = -2:0.2:2; y = x'; z = x .* exp(-x.^2 - y.^2); [px,py] = gradient(z); Plot the contour lines and vectors in the same figure. Get figure contour(x,y,z) hold on quiver(x...
Copy Code Copy Command Create a linearly interpolated map. Get map = signedDistanceMap(InterpolationMethod="linear"); Set the map data to an identity matrix to set the main diagonal of the map to occupied. Get setMapData(map,eye(10)); Set top left quadrant as occupied. Get setMapDa...
Copy Code Copy Command Find the gradient of the multivariable function f(x)=sin2(x1,1)+sin2(x1,2)+sin2(x1,3) with respect to the vector x=[x1,1,x1,2,x1,3]. Use a symbolic matrix variable to express the function f and its gradient in terms of the vector x. Get syms x [...
I've seen thisdone deliberatelyby setting the CData property of a scatter plot, but not with a standard line or errorbar plot. Could you check and see if you have anydefault propertiesset that might impact this? Simply enter this in the Command Window: ...
Copy Code Copy Command Evaluate gradients of the solution to a two-component elliptic system and plot the results. Create a PDE model for two components. Get model = createpde(2); Create the 2-D geometry as a rectangle with a circular hole in its center. For details about creating the ...