Answered
Reference to non-existent field 'axe2'. to display stego image
What is the tag property of hte control? Is it axe2 (unlikely) or axes2 (more likely)? Try axes(handles.axes2);

2 days ago | 0

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Answered
How to remove elements from the vector while we save the index of those removed elements?
Is this what you want? b = [2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1]; y = b; % Find out which elements have a value of more t...

2 days ago | 0

Answered
Making a histogram with two variables in the same graph
You can try this: % Create sample data. z1 = 7000 * randn(1, 1000) + 12000; z2 = 7000 * randn(1, 1000) + 12000; % Create his...

2 days ago | 0

Answered
How to calculate alignments of fingerprint minutiae in MATLAB
If X is a vector of all your x values and Y is a vector of all your y values, do this: distances = pdist2([X(:), Y(:)], [X(:), ...

2 days ago | 0

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Trying to avoid using eval for looping through structures with data in the variable names.
I think you should get a table, either directly from readtable() or by converting your struct to a table with struct2table(). T...

2 days ago | 0

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Random steps of molecules undergoing Brownian motion
Basically you can construct arrays for x and y where the row represents that particle, and the column is the step number (time p...

2 days ago | 0

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Answered
Correlation between 1 number and set of numbers
One way to do it is to use nlfilter(). I'm attaching a demo. Inside your custom function you'd take the local neighborhood and...

2 days ago | 0

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Contrast vs brightness vs gamma
Those charts are a mapping of output gray level versus input gray level. A linear 45 degree line means that the output is the s...

2 days ago | 1

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Answered
How can I calculated centroid contour distance in image at every 10 degree?
No, that won't work (as you know). Try it this way, in my well-commented/explained example below: clc; % Clear the command ...

2 days ago | 0

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Answered
GUIDE - using the data of a Textbox to use it in other functions in the main
Just call this code to get minVelocity whenever you need it minVelocity = str2double(handles.minVelocity.String); The function...

2 days ago | 0

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How to change 1 channel image to 3 channel
Try cat() to stack the gray scale image into 3 slices (color channels): rgbImage = cat(3, grayImage, grayImage, grayImage); It...

3 days ago | 0

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Label segments based on percentage
Your data didn't seem to have any segments where the value was 1, at least in the several cells I looked in, but I think this sh...

3 days ago | 0

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Invalid syntax at'='. Possibly, a ')' is missing.error in this sentence .a red line under the "=" sign.
Assignments are made with a single equals sign, not a double equals sign. I fixed a ton of those and then it bombed when you ge...

4 days ago | 0

Answered
Invalid syntax at'='. Possibly, a ')' is missing.error in this sentence .a red line under the "=" sign.
FOR and END need to be lower case. You forgot to attach C:\Users\macbook\Desktop\Powerquality\Assignment1.xls so we can't run y...

4 days ago | 0

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How to create an identity matrix with three identical rows each time
Use repelem()

4 days ago | 0

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Inner matrix dimensions must agree
The error is described in the FAQ

4 days ago | 0

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matrix of matrices - matrix with matrices inside it
Some more ways A = [1 2 3 4; 5 6 7 8] % Create a 2-D array with the vectors in it. A = cat(2, [1 2 3 4], [5 6 7 8]); % Create ...

4 days ago | 0

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Subplot images from database folder using index value.
Regarding your edited question (where you took out mention of the "r" variable over which you wished to sort), you might want to...

4 days ago | 0

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Subplot images from database folder using index value.
I don't understand the question, but to sort by decreasing values of r, read in the image for each r, and display the image, for...

5 days ago | 0

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Using the Mod Function to Turn a Vector (i.e. 1:15) into [1, 2, 3, 1, 2, 3, 1, 2, 3] etc.
Yeah, you could do it like that, though a much more straightforward way is to simply use repmat n = 5; % Whatever you want out...

5 days ago | 0

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How to fit an ellipse to an image in matlab.
See Steve's blog: Visualizing regionprops ellipse measurements

5 days ago | 0

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Running Average of a Massive data set
Well 20,000 points is far from massive. Maybe if it were 10,000 times that big. 20k is actually pretty small. Anyway you can ...

5 days ago | 0

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Answered
Left and right sides have a different number of elements
You need to preallocate the 3-by-3-by-n array Qb. This works: n = 2 ang = 0 % (however I'd like it to iterate throuhg 0 and 9...

5 days ago | 0

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Calculating area under a curve
Depends on what the signal values truly represent. I'd suggest either summing the signal with sum() or using trapz(). You can ...

5 days ago | 0

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How to show/ indicate the absolute Maximum and Minimum on a plot in matlab?
Since you know x and y, how about hold on; plot(x, y, 'ro', 'LineWidth', 2, 'MarkerSize', 20); % Plot a circle around the max ...

6 days ago | 0

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Object-Detection on the Edge of my Image
Not sure why this 10 month old post popped up on the current list, but whatever. The function you're looking for is imclearbord...

6 days ago | 0

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Answered
alternate row sorting on changing row value
Sounds a lot like homework. So look at functions like sort(), flipup(), findgroups(), mod(), rem(), etc. and look at indexing, ...

6 days ago | 0

Answered
Remove parts from Image and Fill Parts
Pretty easy. Threshold, fill holes, take the 3 largest. Solution below. Adapt as needed. % Initialization steps. clc; % ...

6 days ago | 0

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Answered
how to calculate the distance between different pixels
Try imdistline() or improfile() to get the distance either in pixels or real world units (if you've used XDAta when you called i...

7 days ago | 0

Answered
Segment Dumbbell Structure into Two Circles and One Rectangle
Try imfindcircles() to find the centers and radii of the circles. Then create a circular mask to mask them out -- see The FAQ...

7 days ago | 0

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