# Array of booleans with the disk shape disk = ((x_grid-center_x)**2 + (y_grid-center_y)**2) <= radius**2 ———disk 是距离中心格网点(center_x, center_y) 小于等于 radius**2(x, y) # You can now do all sorts of things with the mask "disk": # For instance, the follo...
% By default program is trying to convert everything to struct’s and arrays % of structs. In case arrays of structs all the structs in array need to have the % same fields, and if they are not than MATLAB creates empty fields. Pref=[]; Pref.NoCells=true; gen_object_display(xml_re...
The CellStr class provides support for passing data from Java® to MATLAB® as a MATLAB cell array of char vectors (called a cellstr in MATLAB, see cellstr). There are MATLAB functions that require cell arrays of char vectors as inputs. To pass arguments from Java to a MATLAB functio...
y(iter) = double(ya) + double(remain)./double(xlen); else y(iter) = cast(ya + xcs(end) ./ xlen, outclass); end end if ~isscalar(y) y = reshape(y,ysiz); end end function [flag, omitnan] = parseInputs(flag, flag2, isFlag2Set) % Process flags, return boolean omitnan and...
FMINCON attempts to solve problems of the form: min F(X) subject to: A*X <= B, Aeq*X = Beq (linear constraints)线性约束 X C(X) <= 0, Ceq(X) = 0 (nonlinear constraints)非线性约束 LB <= X <= UB (bounds) *//*FMINCON implements four different algorithms: interior point, SQP,...
数组操作和矩阵操作(Array Operations vs. Matrix Operations) 对矩阵的元素一个一个孤立进行的操作称作数组操作;而把矩阵视为一个整体进行的运算则成为矩阵操作。布朗数组操作(Boolean Array Operations)对矩阵的比较运算是数组操作,也就是说,是对每个元素孤立进行的。因此其结果就不是一个“真”或者“假”,而是一堆...
有的 函数logical可以把数字变成逻辑型 >> help logical LOGICAL Convert numeric values to logical.LOGICAL(X) converts the elements of the array X into logicals,thus returning an array that can be used for logical indexing or logical tests. logicals can have the values 0 and 1 ...
logical Logical (Boolean) Operations Use in relational conditions or to test state. Can have one of two values: true or false. Also useful in array indexing. Two-dimensional arrays can be sparse. function_handle Function Handles Pointer to a function. Enables passing a function to another funct...
1.“计算向量、矩阵化，尽量减少for循环。”因为MATLAB本来就是矩阵实验室的意思，他提供了极其强大而灵活的矩阵运算能力，你就没必要自己再用自己编写的for循环去实现矩阵运算的功能了。另外由于matlab是一种解释性语言，所以最忌讳直接使用循环语句。但在有些情况下，使用for循环可以提高程序的易读性，在效率提高不是...
% mean of boolean array {(mean_amplitude)/(envelope_amplitude) > THRESHOLD} < TOLERANCE % % where mean_amplitude and envelope_amplitude have definitions similar to the % real case % % IMF = EMD(X,...,'Option_name',Option_value,...) sets options Option_name to ...