How to pass a struct as name-value-pairs to a function?

75 views (last 30 days)
Is it possible to convert a struct to name-value-pairs that is then fed to a function that takes Name-Value pairs as input arguments? The fieldname of the struct would represent the Name and and the fieldvalue the Value of the Name-Value pairs.
One particular function that use Name-Value pairs as input is the GlobalSearch function in MATLAB.
gs = GlobalSearch(Name,Value,...)
For example is the following possible
% I want this
gs = GlobalSearch('BasinRadiusFactor',.5,'NumTrialPoints',400)
% To be equal to this
options.BasinRadiusFactor = 0.5
options.NumTrialPoints = 400
gs = GlobalSearch(options)

Accepted Answer

Matt J
Matt J on 1 Jul 2019
Edited: Matt J on 1 Jul 2019
Some functions may enable this (in particular, those that use inputParser to parse string-value pairs will always accept a struct), but clearly not all functions, as you found out when you ran your example. However, you can always pre-convert a struct to a cell of string value pairs using the utility below.
function C=struct2pairs(S)
%Turns a scalar struct S into a cell of string-value pairs C
% C=struct2pairs(S)
%If S is a cell already, it will be returned unchanged.
if iscell(S)
C=S; return
elseif length(S)>1
error 'Input must be a scalar struct or cell';
C=[fieldnames(S).'; struct2cell(S).'];

More Answers (1)

Hyeokjin Jho
Hyeokjin Jho on 30 Mar 2021

Sign in to comment.




Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!