Community Profile # Harshit

Active since 2012

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Question

Stack overflow in mex
Hi Friends, I have one confusion regarding a mex code. The code is giving me a segmentation fault. #include<math.h> #...

mer än 4 år ago | 4 answers | 0

### 4

Question

Matlab Coder : Size Mismatch Issue
Hi, I am using MATLAB coder to generate mex files for the matlab. Here is one error I am getting in line x2_est_sym = x...

mer än 4 år ago | 2 answers | 0

### 2

Question

MATLAB expression 'R_loc' is not of the correct complexness.
Hi, This is an issue I am getting using matlab coder. While declaring C the type I used was complex. But during run time some ...

mer än 9 år ago | 0 answers | 0

### 0

how to covariance of 16*16 matrix
cov(matrix). See this http://www.mathworks.in/help/matlab/ref/cov.html

mer än 9 år ago | 0

Function classify in matlab
The classifiers accuracy can never be 100%. The classifiers gets trained on training set and then work on the data. Porbably you...

mer än 9 år ago | 0

How to extract pixel values in 8-bit binary format from an image?
Once you extract the pixel from image quantize it to (0,256) fixed point representation. Let the pixel be p(i,j) the output shou...

mer än 9 år ago | 0

How to plot four variables value in XY graph
use hold all after first plot.

nästan 10 år ago | 0

Question

MEXCallMatlab very slow. Suggest alternate
Hi, I am working on a MEX file. I am using MEXCallMatlab which is very slow to call matlab inbuilt function as well as user de...

nästan 10 år ago | 1 answer | 0

### 1

Solved

Determine if input is odd
Given the input n, return true if n is odd or false if n is even.

nästan 10 år ago

comparing relevant elemnts of two matrix
size((A-B)>0)

nästan 10 år ago | 0

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...

nästan 10 år ago

Solved

Fibonacci sequence
Calculate the nth Fibonacci number. Given n, return f where f = fib(n) and f(1) = 1, f(2) = 1, f(3) = 2, ... Examples: Inpu...

nästan 10 år ago

Solved

Swap the first and last columns
Flip the outermost columns of matrix A, so that the first column becomes the last and the last column becomes the first. All oth...

nästan 10 år ago

Solved

Triangle Numbers
Triangle numbers are the sums of successive integers. So 6 is a triangle number because 6 = 1 + 2 + 3 which can be displa...

nästan 10 år ago

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 ...

nästan 10 år ago

how to choose homogeneous blocks from image in matlab
Segment the image and pick up any region.

nästan 10 år ago | 0

Solved

Select every other element of a vector
Write a function which returns every other element of the vector passed in. That is, it returns the all odd-numbered elements, s...

nästan 10 år ago

taking part of the picture
Here is an error you can't use imshow on an image. You have to first read it in a variable then use imshow on that. imshow(ROI) ...

nästan 10 år ago | 0

| accepted

Solved

inner product of two vectors
inner product of two vectors

nästan 10 år ago

Solved

Reverse the vector
Reverse the vector elements. Example: Input x = [1,2,3,4,5,6,7,8,9] Output y = [9,8,7,6,5,4,3,2,1]

nästan 10 år ago

Solved

Sum all integers from 1 to 2^n
Given the number x, y must be the summation of all integers from 1 to 2^x. For instance if x=2 then y must be 1+2+3+4=10.

nästan 10 år ago

Solved

Find the sum of all the numbers of the input vector
Find the sum of all the numbers of the input vector x. Examples: Input x = [1 2 3 5] Output y is 11 Input x ...

nästan 10 år ago

Solved

Pizza!
Given a circular pizza with radius _z_ and thickness _a_, return the pizza's volume. [ _z_ is first input argument.] Non-scor...

nästan 10 år ago

How can I reduce the time complexity of this matlab code.. Its taking lot of time to execute when an image is fed as input.
Vectorize your code. Example you don't need inner loops you can use sum to get the value of counts. In the outer two loops you a...

nästan 10 år ago | 1

| accepted

How can I find a number in a matrix?
http://www.mathworks.in/help/matlab/ref/find.html. see it.

nästan 10 år ago | 0

| accepted

find the position of a specific cell entry
[truefalse, index] = ismember('USA', B)

nästan 10 år ago | 0

| accepted

Scaling the values to specific range
D1=int16(S*32768) maps your any integer S*32768 outside the range to 32768 or for S>1 the output will be 32768(2^15) otherwise i...

nästan 10 år ago | 0

| accepted

Converting decimal value to binary
http://www.mathworks.in/help/matlab/ref/dec2bin.html. See this. It will do 2's complement for negative numbers

nästan 10 år ago | 0

| accepted