Renaming loaded variable with initially unknown name

Hello All,

Currently I am working with genome scale models. So, I have .mat files of those models. After loading the files, I get random variables (suppose: xyz, data type: 1x1 struct) in my workspace. I want to fetch variables inside the loaded variable. Like xyz.reactions or xyz.genes. But I am unable to get the name 'xyz'. How can I rename them automaically without knowing the variable names?

I tried > model = load('filename.mat'); but this creates a struct with the unknown name inside model, so unable to fetch variables in it.

Any suggestions would be highly appreciated!

Thanks!

[Stephen23]

"Any suggestions would be highly appreciated!"

https://www.mathworks.com/help/matlab/ref/fieldnames.html

Answer 1

[Steven Lord]

data = load('census.mat')

data = struct with fields:
    cdate: [21×1 double]
      pop: [21×1 double]

variableNames = fieldnames(data)

variableNames = 2×1 cell array
    {'cdate'}
    {'pop'  }

dataFromVariable1 = data.(variableNames{1})

dataFromVariable1 = 21×1

1790 1800 1810 1820 1830 1840 1850 1860 1870 1880

fprintf('Variable %s from census.mat is %s\n', variableNames{1}, mat2str(dataFromVariable1))

Variable cdate from census.mat is [1790;1800;1810;1820;1830;1840;1850;1860;1870;1880;1890;1900;1910;1920;1930;1940;1950;1960;1970;1980;1990]

[Pratyay Sengupta]

Thanks a lot!