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Solved

All capital?

Are all the letters in the input string capital letters? Examples: 'MNOP' -> 1 'MN0P' -> 0

8 years ago

Solved

Back to basics 15 - classes

Covering some basic topics I haven't seen elsewhere on Cody. Return the class of the input variable.

8 years ago

How can I solve this error ... Error using * Inner matrix dimensions must agree. Error in Naivayes (line 74) ProbN = prob_table(A11,A1 - 1,1) *prob_table(A21,A2 - 1,1) *prob_table(A31, A3 - 1,1) *prob_table(A41,A4 - 1,1) *fy(1);

Please check the values of the variables A1, A2, A3 and A4. These should be scalar and greater than 1, otherwise they generat...

8 years ago | 0

Tracks are the same length but wont concatenate

From your data given above, one of them is a row and the other is a column. They should both read 1-by-566272 *OR* 566272-by-1. ...

8 years ago | 1

Trouble running 5 separate data sets through one code and saving the answers for each data set.

The loop scheme you have here is not serving any purpose. I suggest creating a function out of the lines of code that you have I...

8 years ago | 0

I have two images of the same matrix size (512x512) but different pixel spacing. One image has a pixel spacing of 0.7 and the other 0.4. How do I get the two images to have the same pixel spacing and still maintain the matrix size of both images.

You could extract the image pixel values into new arrays. This would preserve the size of the images and ignore pixel spacing (o...

8 years ago | 0

How can I use wcodemat to re-scale an intensity/gray-scale image?

You could get a map of your original grayscale image X using the |<https://mathworks.com/help/matlab/ref/contrast.html contrast>...

8 years ago | 1

| accepted

Hi I have a matrix that is 100x100 and i would like to know if its possible to change the font size of the matrix when it shows as output ?

You might find some useful information here: <https://mathworks.com/help/matlab/matlab_env/change-fonts.html>

8 years ago | 0

How to remove subplot grey space between images

The best (and possibly only) way to do that would be to create a new, larger image where you combine all your smaller subplots i...

8 years ago | 1

Replace elements between two matrices

Try the |<https://mathworks.com/help/matlab/ref/setxor.html setxor>| function. You may need to tweak the directionality of the i...

8 years ago | 0

Solved

Reindex a vector

You are given two vectors of equal length. Vector N has numeric values (no Inf or NaN) while vector IDX has integers. Place th...

8 years ago

Solved

intersection of matrices

Given two matrices filled with ones and zeros, determine if they share a common row, column entry. These matrices are of identi...

8 years ago

Solved

Getting the indices from a matrice

Getting the indices from a matrice. Inspired by Problem 645. Getting the indices from a vector by the great Doug Hull. Given a...

8 years ago

Solved

We love vectorized solutions. Problem 1 : remove the row average.

Given a 2-d matrix, remove the row average from each row. Your solution MUST be vectorized. The solution will be tested for ac...

8 years ago

Solved

Create logical matrix with a specific row and column sums

Given two numbers *|n|* and *|s|*, build an |n-by-n| logical matrix (of only zeros and ones), such that both the row sums and th...

8 years ago

Solved

Is my wife really right?

For every input, output the string 'yes' once. Example: [yes1, yes2] = YesSheIs('Am I right?', 'Do you love me?') yes1 = '...

8 years ago

Solved

Back to basics 10 - Max Float

Covering some basic topics I haven't seen elsewhere on Cody. Return the largest positive floating-point number MATLAB can han...

8 years ago

Solved

Make a random, non-repeating vector.

This is a basic MATLAB operation. It is for instructional purposes. --- If you want to get a random permutation of integer...

8 years ago

Solved

Love triangles

Given a vector of lengths [a b c], determines whether a triangle with non-zero area (in two-dimensional Euclidean space, smarty!...

8 years ago

Solved

Replace Vector Elements

Replace all elements in a vector which are equal to or smaller than zero with 0.1. Example: A = [1 2 3 -1 0 2 -3 -80]; ...

8 years ago

Solved

Number of 1s in a binary string

Find the number of 1s in the given binary string. Example. If the input string is '1100101', the output is 4. If the input stri...

8 years ago

Solved

Back to basics 23 - Triangular matrix

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

8 years ago

Solved

Replace NaNs with the number that appears to its left in the row.

Replace NaNs with the number that appears to its left in the row. If there are more than one consecutive NaNs, they should all ...

8 years ago

Solved

Omit columns averages from a matrix

Omit columns averages from a matrix. For example: A = 16 2 3 13 5 11 10 8 9 7 ...

8 years ago

Solved

Insert zeros into vector

Insert zeros after each elements in the vector. Number of zeros is specified as the input parameter. For example: x = [1 ...

8 years ago

Solved

Remove the two elements next to NaN value

The aim is to *remove the two elements next to NaN values* inside a vector. For example: x = [6 10 5 8 9 NaN 23 9 7 3 21 ...

8 years ago

Solved

Specific Element Count

Given a vector _v_ and a element _e_, return the number of occurrences of _e_ in _v_. Note: NaNs are equal and there may be n...

8 years ago

Solved

Matrix indexing with two vectors of indices

Given a matrix M and two index vectors a and b, return a row vector x where x(i) = M(a(i),b(i)).

8 years ago