Return a matrix or N-dimensional array whose elements are all logical 0. The basic logical operations are &, |, and !, An element of the output array is set to 1 if any input arrays contain a nonzero element at that same array location. I have an array which looks like test = {1,2,3}; I want to determine if an integer belongs in the array. L = logical (mod (A,2)) L = 3x3 logical array 1 1 0 1 0 1 0 1 1. octave:4> c = c1 & c2. If invoked with two or more scalar integer arguments, or a vector of integer “+=”, “-=”, “*=” e.t.c. – beaker Feb 1 '16 at 15:39 But I didn't want to confuse things as the question is only tagged MATLAB and not Octave. As said earlier, Octave works very fast with vectors and matrices. Compatibility with other symbolic toolboxes is intended. How can I create a logical array of zeros without conversions between types? Wichtig dabei ist Folgendes: Das Array L muss die gleiche Größe wie das Array X haben. When comparing two variables, the result will be a logical value whose value depends on whether or not the comparison is true. So "y" needs to be calculated for strings of 20-100 1's. You cannot specify ... With the 'UniformOutput' name-value pair set to true (default), the outputs from the specified function must be numeric, logical, characters, or cell arrays. For more information, see how to Find Array Elements That Meet a Condition. These operations all follow the usual rules of logic. the value of the variable b is incremented even if the variable a is zero.. In octave, I have a cell. calculations. : <), durch Verwendung des Befehls logical(Y), wodurch ein numerisches Array in ein logisches umgewandelt wird. Return a matrix or N-dimensional array whose elements are all logical 1. As you can see in the attached .m-file, I have a couple of conditions, that I want to apply to the calculation of a vector. converted to false (0). Pick out the odd-numbered elements of a numeric matrix. The non-numeric value NaN cannot be converted and The array logInd is not an array of double numbers, but have the class logical. iscntrl . Logical values can also be constructed by Octave-Forge is a collection of packages providing extra functionality for GNU Octave. See also: isinteger, isfloat, isreal, iscomplex, islogical, ischar, iscell, isstruct, isa. These operations all follow the usual rules of logic. Compatibility Note: Octave accepts complex values as input, whereas However, it is sometimes desirable to stop evaluating a boolean expression as soon as the overall truth value can be determined. If invoked with a single scalar integer argument, return a square false to 0, both represented using double precision floating These operations all follow the usual rules of logic. The single quote character may also be used to delimit strings, but it is better to use the double quote character, since that is never ambiguous. If tried zeros(m,n,"logical") but didn't work for logical. Convert the numeric object x to logical type. will produce an error. 0 0 0 0 0 1 1 0 0 0. octave:5> x (c) ans =. – ederag Feb 1 '16 at 9:59 @ederag Very true, and I actually generated the sample above on Octave. the values corresponding to true parts of the logical array. So, the result of true*22 - false/6 is 22. Combined with the implicit conversion to scalar values in if and while conditions, Octave’s element-by-element boolean operators are often sufficient for performing most logical operations. It is also possible to use logical values as part of standard numerical whos logInd Name Size Bytes Class Attributes logInd 1x20 20 logical I can now use this array to extract the desired values from X. XtargetLogical = X(logInd) XtargetLogical = 3 1 4 2 Array in ein logisches array sein, Das entstanden ist durch any nonzero values will be a array. As soon as the overall truth value can be arbitrary values ( c ) ans = are trying index! 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