Cell contents reference from a non-cell array object?

function [ information ] = printInfo( subjects )  
s=height(struct2table(subjects));  
for x=1:s  
   name=subjects(x).name;
   weight=subjects(x).weight;
   maxweight=max(weight);  
   feet=subjects(x).height.feet;  
   inches=subjects(x).height.inches;
   str='%d: %d''%d", %d pounds'; 
   information=sprintf(str,name,feet,inches,maxweight);  
end
end

[Birdman]

What is your input to the function?

[Garrett Miller]

It is a struct array that has a varying amount of subsets, hence the first line of code

s=height(struct2table(subjects));

[Walter Roberson]

Which line is the error occurring on?

You should probably be replacing the assignment to s with

s = numel(subjects);

[Garrett Miller]

That's kind of the issue, it occurs on the .gui code that I am supposed to be using to check the functionality

clear subjects;
subjects.name = char( randi( 26 , 1 , randi( 10 ) ) + 96 );
subjects.id = randi( 100 );
subjects.weight = randi( 100 , 1 , 2 ) + 100;
subjects.height.feet = randi( 4 ) + 3;
subjects.height.inches = randi( 12 ) - 1;
for s = 2 : randi( 10 )
    subjects( s ).name = char( randi( 26 , 1 , randi( 10 ) ) + 96 );
    subjects( s ).id = randi( 100 );
    subjects( s ).weight = randi( 100 , 1 , 2 ) + 100;
    subjects( s ).height.feet = randi( 4 ) + 3;
    subjects( s ).height.inches = randi( 12 ) - 1;
end

yourInfo = printInfo( subjects );

for string = 1 : length( yourInfo )
    y = 1 - string / length( yourInfo );
    uicontrol( 'style' , 'text' , 'units' , 'normalized' , ...
        'fontunits' , 'normalized' , ...
        'fontname' , 'fixedwidth' , 'string' , ...
        yourInfo{ string } , ...
        'position' , [ 0 y 1 1 / length( yourInfo ) ] );
end

The error is on yourInfo{ string } , ...

Answer 1

[per isakson]

• See Debug a MATLAB Program

yourInfo is a character array, not a cell array, thus replace

yourInfo{ string }

by

yourInfo( string )

After done that correction your code produces a plot and no errors.

btw: string is a poor name of a loop-variable - IMO

Answer 2

[Walter Roberson]

function [ information ] = printInfo( subjects )  
s=numel(subjects);  
for x=1:s  
   name=subjects(x).name;
   weight=subjects(x).weight;
   maxweight=max(weight);  
   feet=subjects(x).height.feet;  
   inches=subjects(x).height.inches;
   str='%s: %d''%d", %d pounds'; 
   information{x}=sprintf(str,name,feet,inches,maxweight);  
end
end