Question

Canonical Correlation Analysis - canoncorr function in matlab

I am just starting with CCA, I am trying to explore it using the matlab function, but I guess I am stuck understand the result I...

etwa 8 Jahre ago | 1 answer | 0

Question

Understanding output of perfcurve

[X,Y,T,AUC2,OPTROCPT] = perfcurve(classtest,classpredict,2); My classtest as well as classpredict are 460*1, but when i run ...

mehr als 8 Jahre ago | 1 answer | 0

Question

SVM Error - The first input should be a struct generated by SVMTRAIN

I am getting error using following code with SVM SVMStruct1 = svmtrain(data,class,'kernel_function','linear'); class12=...

mehr als 8 Jahre ago | 0 answers | 0

Solved

Is my wife right? Now with even more wrong husband

Again, as in "Is my wife right?" ( <http://www.mathworks.com/matlabcentral/cody/problems/149-is-my-wife-right> ), answer 'yes' r...

fast 9 Jahre ago

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What do all these errors mean and is there anything that I can do to prevent/fix this

http://www.mathworks.com/help/matlab/matlab_prog/resolving-out-of-memory-errors.html This might help!

What do all these errors mean and is there anything that I can do to prevent/fix this

http://www.mathworks.com/help/matlab/matlab_prog/resolving-out-of-memory-errors.html This might help!

fast 9 Jahre ago | 0

| accepted

Answered

Error using ==> mtimes Inner matrix dimensions must agree.

pts3 = H*[pts1;ones(1,n)]; if you check the size of H and size of [pts1;ones(1,n)], the no. of columns of H and no. o...

Error using ==> mtimes Inner matrix dimensions must agree.

pts3 = H*[pts1;ones(1,n)]; if you check the size of H and size of [pts1;ones(1,n)], the no. of columns of H and no. o...

fast 9 Jahre ago | 0

Solved

Distance walked 1D

Suppose you go from position 7 to 10 to 6 to 4. Then you have walked 9 units of distance, since 7 to 10 is 3 units, 10 to 6 is 4...

fast 9 Jahre ago

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Sorted highest to lowest?

Return 1 if the input is sorted from highest to lowest, 0 if not. Example: 1:7 -> 0 [7 5 2] -> 1

fast 9 Jahre ago

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getting rid of a loop

b=[V(:,4) V(:,5) V(:,10) V(:,18)] b will be what you want.

getting rid of a loop

b=[V(:,4) V(:,5) V(:,10) V(:,18)] b will be what you want.

fast 9 Jahre ago | 0

Question

ROC curve for Decision Tree

I am getting ROC curve for decision tree but I am a bit taken away by the curve. Its similar to the curve, http://ard.bmj.com...

fast 9 Jahre ago | 2 answers | 0

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Entering a formula by user

Have a look at eval: http://www.mathworks.com/help/techdoc/ref/eval.html aMatrix = magic(5); expression = input('Ent...

Entering a formula by user

Have a look at eval: http://www.mathworks.com/help/techdoc/ref/eval.html aMatrix = magic(5); expression = input('Ent...

fast 9 Jahre ago | 0

| accepted

Answered

Subscript indices must either be real positive integers or logicals; Perimeter issue

plot(x,y((i-1)*5000:i*5000),'g') when i=1, you are indexing y from 0:5000, matlab doesnt have 0 index.

Subscript indices must either be real positive integers or logicals; Perimeter issue

plot(x,y((i-1)*5000:i*5000),'g') when i=1, you are indexing y from 0:5000, matlab doesnt have 0 index.

fast 9 Jahre ago | 1

| accepted

Solved

Finding Perfect Squares

Given a vector of numbers, return true if one of the numbers is a square of one of the other numbers. Otherwise return false. E...

fast 9 Jahre ago

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Why do I get this response 'Operands to the || and && operators must be convertible to logical scalar values.'?

G=str2num(Grade); G will be a string so you need to convert that to a number using the str2num function. Its better to use...

Why do I get this response 'Operands to the || and && operators must be convertible to logical scalar values.'?

G=str2num(Grade); G will be a string so you need to convert that to a number using the str2num function. Its better to use...

fast 9 Jahre ago | 0

| accepted

Answered

rows which do not contain zero

count=sum(sum(D==0,2)==0) count will be the number of rows which are not all zeros in matrix D.

rows which do not contain zero

count=sum(sum(D==0,2)==0) count will be the number of rows which are not all zeros in matrix D.

fast 9 Jahre ago | 0

Solved

Create times-tables

At one time or another, we all had to memorize boring times tables. 5 times 5 is 25. 5 times 6 is 30. 12 times 12 is way more th...

fast 9 Jahre ago

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Weighted average

Given two lists of numbers, determine the weighted average. Example [1 2 3] and [10 15 20] should result in 33.333...

fast 9 Jahre ago

Answered

Initialization of array of structure

You shouldnt do LD=[], instead you should change the field of each of the structure in the array.

Initialization of array of structure

You shouldnt do LD=[], instead you should change the field of each of the structure in the array.

fast 9 Jahre ago | 0

Answered

a simple question about for loop

First of all its loop not loob. I hope you meant range as a variable. the following code should work. for a = (1:10) ...

a simple question about for loop

First of all its loop not loob. I hope you meant range as a variable. the following code should work. for a = (1:10) ...

fast 9 Jahre ago | 0

Solved

Find relatively common elements in matrix rows

You want to find all elements that exist in greater than 50% of the rows in the matrix. For example, given A = 1 2 3 5 ...

fast 9 Jahre ago

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Find the numeric mean of the prime numbers in a matrix.

There will always be at least one prime in the matrix. Example: Input in = [ 8 3 5 9 ] Output out is 4...

fast 9 Jahre ago

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Implement a ROT13 cipher

Replace each character in string s1 with the character that is shifted 13 positions from it (wrap back to the beginning if neces...

fast 9 Jahre ago

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Nearest Numbers

Given a row vector of numbers, find the indices of the two nearest numbers. Examples: [index1 index2] = nearestNumbers([2 5 3...

fast 9 Jahre ago

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Determine whether a vector is monotonically increasing

Return true if the elements of the input vector increase monotonically (i.e. each element is larger than the previous). Return f...

fast 9 Jahre ago

Submitted

Customized K-Means

Customized K-means where you can choose different initial cluster centroid.

fast 9 Jahre ago | 2 downloads |

Solved

Find all elements less than 0 or greater than 10 and replace them with NaN

Given an input vector x, find all elements of x less than 0 or greater than 10 and replace them with NaN. Example: Input ...

fast 9 Jahre ago

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Bottles of beer

Given an input number representing the number of bottles of beer on the wall, output how many are left if you take one down and ...

fast 9 Jahre ago

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Swap the input arguments

Write a two-input, two-output function that swaps its two input arguments. For example: [q,r] = swap(5,10) returns q = ...

fast 9 Jahre ago