Hello all, I am getting an error "Dot indexing is not supported for variables of this type."

Below is the error code.

Dot indexing is not supported for variables of this type.

Error in yolov2ObjectDetector/parseDetectInputs (line 580)
networkInputSize = network.Layers(this.LayerIndices.ImageLayerIdx).InputSize;

Error in yolov2ObjectDetector/detect (line 413)
params = this.parseDetectInputs(I,varargin{:});

Error in secondpage>pushbutton1_Callback (line 242)
[bboxes,scores,label] = detect(detector,s(k).cdata);

Error in gui_mainfcn (line 95)
feval(varargin{:});

Error in secondpage (line 42)
gui_mainfcn(gui_State, varargin{:});

Error in matlab.graphics.internal.figfile.FigFile/read>@(hObject,eventdata)secondpage('pushbutton1_Callback',hObject,eventdata,guidata(hObject))

Error while evaluating UIControl Callback.

May you please help resolve this.

Thank you

[dpb]

Not enough code context to see the definitions of the code to be able to tell what anything is...

[Amanpreet]

May you please tell what all code context should I share for complete insight ?

[Amanpreet]

Here is the link to complete code:-

https://github.com/EaintMM/Motorcyclist-Helmet-Detection-using-YOLO-Object-Detection

[Walter Roberson]

One of the struct entries or object properties or methods is returning [] instead of what is expected. Possibly the yolo is not properly initialized, or possibly you have a third party function that is interfering with operation of the code. You would need to use the debugger to track backwards.

[Walter Roberson]

The github link is missing some files; I had to download from the Google Drive link. And edit the code, because it uses \ directory separators.

[Amanpreet]

@Walter Roberson Thanks for helping with the same. Code is running now. I did the debugging to track back and it said that Deep learning toolbox was not installed.

Answer 1

[Walter Roberson]

I do not get that error when I test with R2022b on my system. Which MATLAB release are you using?

I did have to make some changes to files to get the code to run on my system, because it had hardcoded paths and used \ as the directory separator; I also worked around a warning. I have attached the modified versions.

Also, most of the test videos do not work at all on my system; I had to use sdVideo.mp4