MATLAB: How to get field value from a struct as a variable in order to use in a code

structvariable

Hey all

I want to extract x and y from this struct, as a seperate variables in my workplace, in order to use them in my code.

  struct with fields:
       Geometry: 'Polygon'
    BoundingBox: [2×2 double]
              X: [1×125458 double]
              Y: [1×125458 double]

please help me

thanks a lot

Best Answer

There's no need to. Creating separate variables is usually not a good idea. Wherever you were going to use X, use yourstruct.X. Makes no difference to the code.

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clc; clear all ;
file = 'cpc_rfe_v2.0_sa_dly.bin.20020101.nc' ;
lon = ncread(file,'lon') ;
lat = ncread(file,'lat') ;
RF = ncread(file,'RF') ;
%
path = [pwd filesep 'India State wise with telangana' filesep 'india27-11.shp'] ;
S = shaperead(path) ;
n = length(S) ;
x = zeros(n,1) ;  y =zeros(n,1) ;
pcolor(lon,lat,RF') ; shading interp ;
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MATLAB: How to refer to all fields (of a particular level) within a structure

What "works" is probably going to depend on what is contained in the sub-fields and what you intend to do with this data downstream in your code. E.g., for your simplistic example if you wanted to extract the data (assuming the Height was scalar):

result = cellfun(@(x)Students.(x).Height,fieldnames(Students))

That would give you a result variable that you could use downstream.

Maybe you could give us more detail on the fields of your structure, and what operations you intend.

Best Answer

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MATLAB: How to refer to all fields (of a particular level) within a structure

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