Error: unable to resolve the name

I have some code which generates a variable name iteratively in a loop, It was working fine but now I get the error: unable to resolve the name 'pre1min.windowchunkIdx'.

preORpost = {'pre' 'post'}

all_type_ALL = []; %output for all voc types for all ppts

%load raw data

for pOp = 1:length(preORpost)

for min = 1:2

%window = [preORpost{pOp} num2str(min) 'min'];

varName = [preORpost{pOp} num2str(min) 'min']; % Generate variable name

fieldName = 'windowchunkIdx'; % Generate field name

windowchunk = eval([varName '.' fieldName]);

[Stephen23]

https://www.mathworks.com/matlabcentral/discussions/tips/849901-tutorial-why-variables-should-not-be-named-dynamically-eval

You did not tell us the most important information: how exactly did you get all of those variables into the workspace?

Answer 1

[Kunal Kandhari]

The error, "Unable to resolve the name 'pre1min.windowchunkIdx'." suggests that the variable 'pre1min.windowchunkIdx' (or other similar variables) does not exist in the current workspace or does not have the expected structure. To address this, you need to ensure that these variables are loaded correctly and have the expected fields.

[Emu]

Ohhhh yes, i jsut reordered the script so this is below the loading, thank you :)