Is Arrayfun faster than for loop?
Is Arrayfun faster than for loop?
For example, I tested arrayfun vs a forloop, squaring the elements, and the speed difference was a factor of two. While this is concrete evidence that we should always use for loops instead of arrayfun, it’s obvious that the benefit varies.
Is MATLAB a gpuArray?
A gpuArray object represents an array stored in GPU memory. A large number of functions in MATLAB® and in other toolboxes support gpuArray objects, allowing you to run your code on GPUs with minimal changes to the code.
What is Bsxfun MATLAB?
The bsxfun function expands the vectors into matrices of the same size, which is an efficient way to evaluate fun for many combinations of the inputs.
What Does Not enough input arguments mean in MATLAB?
If your function requires input arguments, the Not enough input arguments error will occur as you have written a functions that expects inputs to go inside the function. Therefore, you cannot expect the function to run by simply pushing the Run button.
Is Cellfun faster than for loop?
Direct link to this comment. For the example Tom gave, however, cellfun with string is much faster than a for loop (in answer to the original question). Elapsed time is 0.755874 seconds. Elapsed time is 0.913470 seconds.
When should I use gpuArray?
You can use the gpuArray function to transfer data to the GPU and create a gpuArray , or you can create an array directly on the GPU. gpuArray provides GPU versions of many functions that you can use to create data arrays, such as linspace . For more information, see Create GPU Arrays Directly.
What does Too many input arguments mean in MATLAB?
Common causes: 1) You have passed a function more input arguments than it expected to receive, perhaps by passing a list of inputs rather than a vector of inputs, or have tried to obtain two outputs from a function that only returns one. 2) You have multiple functions with the same name.
What are input arguments in MATLAB?
The varargin argument is a cell array that contains the function inputs, where each input is in its own cell. Support Variable Number of Outputs. Define a function that returns a variable number of output arguments using varargout .
What is HDL Coder MATLAB?
HDL Coder™ generates portable, synthesizable Verilog® and VHDL® code from MATLAB® functions, Simulink® models, and Stateflow® charts. The generated HDL code can be used for FPGA programming or ASIC prototyping and design.
What actors are in the Matrix movies in order?
Cast (in credits order) verified as complete. #N#. Keanu Reeves. Neo. #N#Laurence Fishburne. Morpheus. #N#Carrie-Anne Moss.
What are the input and output types for arrayfun?
The input function to arrayfun must return a scalar or scalars that can be concatenated into an array. Code generation does not support cell array inputs to func. To predetermine the output type for func, the code generator can call func before processing the accumarray input arguments.
What is an arrayfun in MATLAB?
func can correspond to more than one function file and therefore can represent a set of overloaded functions. In these cases, MATLAB ® determines which function to call based on the class of the input arguments. Example: B = arrayfun (@round,A) returns the integer part of each element of A.
How do you apply a function to an array of elements?
B = arrayfun (func,A) applies the function func to the elements of A, one element at a time. arrayfun then concatenates the outputs from func into the output array B, so that for the i th element of A, B (i) = func (A (i)). The input argument func is a function handle to a function that takes one input argument and returns a scalar.