How to solve Function 'subsindex' is not defined of class 'strel'

i ran this code :

my_folder = 'D:\pcd\tester\ocr\training_set\training_set';
filenames =dir(fullfile(my_folder,'*.bmp'));
total_images = numel(filenames);
input108_2 = [];
se = strel('square', 3);
pad = 2;
%ft =[];
for n = 1 : total_images
	fullname = fullfile(my_folder, filenames(n).name);
	%our_images = logical(imread(fullname));
	rgb = rgb2gray(imread(fullname));
	bw = im2bw(rgb, graythresh(rgb));
	bw2 = bwareaopen(bw, 15);
	%bw2 = padarray(bw2, [pad pad], 'both'); % Adding Pads
	iedge = edge(uint8(bw2)); % edge detection operation
	imdilate = imdilate(iedge, se); % dilation operation
	imfill = imfill(imdilate, 'holes');
	our_images = imfill & bw2;
	thinImage = bwmorph(our_images, 'thin', Inf); % thinning Operation
	%thinImage = thinImage(pad+1:end-1, pad+1:end-1); % Removing Pads
	feature = feature_extract(thinImage);
    input108_2 = [input108_2; feature']; 	
end

but i got this error message:

Function 'subsindex' is not defined for values of class 'strel'.
Error in dataTrain (line 17)
	imdilate = imdilate(iedge, se); % dilation operation

i'd seen for line that given error. but i think there isn't something wrong with it.

Please someone help me to solve this.

Thanks before

Answer 1

[Rik]

You have overwritten the function imdilate with a variable imdilate. So now, the second time your code gets to that line it tries to subindex the variable imdilate with the iedge and se variables. The easy fix is by using a different name for the variable.

      im_dilate = imdilate(iedge, se); % dilation operation
	im_fill = im_fill(im_dilate, 'holes');
	our_images = im_fill & bw2;

[Guillaume]

Personally, I use names like dilated_image and filled_image for variable names. Names that are clearly nouns. Function names are usually verbs so there's very little chance of clash between variable names and function names. Plus, it's a lot clearer what's in the variable.

[Rik]

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[Bachtiar Muhammad Lubis]

yes, thanks a lot rik wisler. i just open this page

[Bachtiar Muhammad Lubis]

thank to you guillaume.