Code Analyzer Misses Variables

I noticed that the code analyzer, at least in Matlab R2016b, misses variables named "TFR". For instance, in the following code, code analyzer marks TFR in the left hand side of the first line as unused, even though it appears just two lines later. The automatic highlighting also doesn't work. Suggestions?

[ERP, TFR] = prelim(cfg);
for i = 1:6
  tmpTFR = TFR;
  tmpTFR.powspctrm = squeeze(TFR.powspctrm(i,:,:,:));
  tmpTFR.dimord = 'chan_freq_time';
  figure
  cfg = [];
  cfg.parameter = 'powspctrm';
  cfg.baseline     = [-1 -0.1];
  cfg.baselinetype = 'db';
  cfg.showlabels   = 'yes';
  cfg.layout       = 'CPC_vis_EEG_layout.mat';
  ft_multiplotTFR(cfg, tmpTFR);
end

[Matt J]

Well, I think the solution is obvious. You shouldn't be using TFR as a variable name ;)

[Nir Ofir]

I suppose :) I should have phrased the question differently: "Suggestions why it so?" rather than suggestions to what I could do to solve it...

[Matt J]

Looks like a bug to me. I don't see it in R2017b or R2018a. Can you upgrade?

[Nir Ofir]

Thanks for your suggestion.

Answer 1

[Steven Lord]

What's on the line between "[ERP, TFR] = prelim(cfg);" and "for i = 1:6" in your picture, the line covered by the Code Analyzer message? It looks like there's enough space for a blank line or one line of code.

If on that line you have code that assigned a value to TFR using non-subscripted indexing (TFR = something) then the Code Analyzer message would be correct as you would be overwriting the contents of that variable before using what prelim returned as its second output.

[Nir Ofir]

Thank you. Just a blank line.