The array logInd is not an array of double numbers, but have the class logical . In this session we want to look closer to how we can plot a conditional plot using Matlab Here is an easy example of a conditional … Conditional Plotting in Matlab. For more information, see Array Indexing . The loop condition should be reducable to a single boolean value, T or F, not an array. *X + (~COND). *Y ; Advantage: works wonderfully in parallel for vectors or large arrays - each item in A gets assigned depending on the corresponding condition. Multidimensional arrays in MATLAB are an extension of the normal two-dimensional matrix. Introduction to If-Else Statement in Matlab. A function call any( array ) will return true if array contains any nonzero values and false if all values are zero. by Tutorial45 April 8, 2020. written by Tutorial45. An array having more than two dimensions is called a multidimensional array in MATLAB. Generally to generate a multidimensional array, we first create a two-dimensional array and extend it. For example, if str is a string containing zero characters, then str == "" returns logical 1 (true).For more information on testing empty strings, see Test for Empty Strings and Missing Values.For information on string comparison, see Compare Text. Two common ways of doing this are the "any" and the "all" functions. If the statement executes code or statement block only when the condition is true. To determine whether a string array has empty strings (string elements with zero characters), use the == operator. For older releases the syntax below is not valid, so then you must use mo(:) instead of mo. For example, let's create a two-dimensional array a. An expression can include relational operators (such as < or ==) and logical operators (such as &&, ||, or ~).Use the logical operators and and or to create compound expressions. You need to make sure you have a scalar condition, instead of having an array. Hi, I am trying to add values to a pre-allocated array based on whether the row number belongs to a set of values. By now, you should have learned the basics of plotting in Matlab using previous post. Note that the isequal MATLAB command also works when A and B are numbers even, though we usually use this method for vectors and matrices.. A And B Are Strings. It has three parts if statement, else statement and else if statement if-else statement in Matlab. The any and all functions are very useful in cases like this. Within the conditional expression of an if...end block, logical operators & and | behave as short-circuit operators. MATLAB returns an array that matches the elements of the array X, element-by-element holding 1s where the matching values in X are the desired values, and 0s otherwise. It is a conditional programming keyword used to give conditions to the program on Matlab. MATLAB ® evaluates compound expressions from left to right, adhering to operator precedence rules.. The same line works for: condition is … In this case, the logical array being used as an index is the same size as the other array, but this is not a requirement. % MATLAB % A, X and Y are numerics % COND is a logical condition. This MATLAB function returns the piecewise expression or function pw whose value is val1 when condition cond1 is true, is val2 when cond2 is true, and so on. A = COND. In this example, I have generated an array with 7 rows and 900 columns, and only when the row number of another array matches the numbers in a specified vector, do I want the column values from that array to be added to my new array. Some problems require information about the locations of the array elements that meet a condition rather than their actual values.