Answered

Create array Arr with 5 rows and 4 columns with each element = 5

Hint: doc zeros doc ones doc repelem doc repmat

Create array Arr with 5 rows and 4 columns with each element = 5

Hint: doc zeros doc ones doc repelem doc repmat

24 dagen ago | 0

Answered

if i have 256x256 matrix and i want to zero padding it to 512x512 how can i do ?

If you just want it padded on two sides, then simply k_im = your 256x256 matrix k_im(512,512) = 0; % pad 0's out to (512,512) ...

if i have 256x256 matrix and i want to zero padding it to 512x512 how can i do ?

If you just want it padded on two sides, then simply k_im = your 256x256 matrix k_im(512,512) = 0; % pad 0's out to (512,512) ...

24 dagen ago | 0

Answered

How can I plot accleration in the x, y, and z directions? Each accerlation coordinate a(x,y,z) is associated with a moment in time.

Would a simple 2D plot suffice? E.g., plot(t,x,t,y,t,z); grid on legend('x','y','z'); xlabel('time') ylabel('acceleration'...

How can I plot accleration in the x, y, and z directions? Each accerlation coordinate a(x,y,z) is associated with a moment in time.

Would a simple 2D plot suffice? E.g., plot(t,x,t,y,t,z); grid on legend('x','y','z'); xlabel('time') ylabel('acceleration'...

24 dagen ago | 1

Answered

how to write the this in matlab e^((x^-1)/2) -1

y = exp((x.^2-1)/2) - 1; See the Getting Started section of the doc for initial help on writing MATLAB code.

how to write the this in matlab e^((x^-1)/2) -1

y = exp((x.^2-1)/2) - 1; See the Getting Started section of the doc for initial help on writing MATLAB code.

25 dagen ago | 0

| accepted

Answered

Save serial datenum as decimal, not scientific notation

First, MATLAB stores all doubles the same way ... as IEEE binary floating point format. What you are seeing as "737389.4167 beco...

Save serial datenum as decimal, not scientific notation

First, MATLAB stores all doubles the same way ... as IEEE binary floating point format. What you are seeing as "737389.4167 beco...

25 dagen ago | 0

Answered

Breaking changes for C++ API?

The current online doc for mxCreateStructMatrix( ) says the last argument must contain "... one or more field names ...", which ...

Breaking changes for C++ API?

The current online doc for mxCreateStructMatrix( ) says the last argument must contain "... one or more field names ...", which ...

25 dagen ago | 0

Answered

Writing a funciton for e^x values?

You use the same n value for the first three terms. You need to increment n each time you add a term, including the first two t...

Writing a funciton for e^x values?

You use the same n value for the first three terms. You need to increment n each time you add a term, including the first two t...

26 dagen ago | 0

Answered

Trying to write a function for the inverse of a matrix.

You are missing the part where you append the identity matrix to the right side of A before you start your Gauss elimination. So...

Trying to write a function for the inverse of a matrix.

You are missing the part where you append the identity matrix to the right side of A before you start your Gauss elimination. So...

26 dagen ago | 0

Answered

mex fortran code containing intrinsic function using Intel fortran compiler

Can you post the offending code? Maybe you are calling it with a non-real argument and the compiler is complaining that it can't...

mex fortran code containing intrinsic function using Intel fortran compiler

Can you post the offending code? Maybe you are calling it with a non-real argument and the compiler is complaining that it can't...

26 dagen ago | 0

Answered

How to re-prompt user input if given incorrect value?

str2double will turn your inputs into numeric, so you will pass your isnumeric( ) test even if there are problems. Instead, chec...

How to re-prompt user input if given incorrect value?

str2double will turn your inputs into numeric, so you will pass your isnumeric( ) test even if there are problems. Instead, chec...

27 dagen ago | 0

| accepted

Answered

Can not use the Fibonacci built in function

For simplicity, let's assume you don't know how many iterations you need in advance. So start with your current code: while x <...

Can not use the Fibonacci built in function

For simplicity, let's assume you don't know how many iterations you need in advance. So start with your current code: while x <...

27 dagen ago | 0

Answered

Trapezoidal rule in a for loop

You made a good start, but there are several problems with your summation. You don't accumulate into your trapez variable, you ...

Trapezoidal rule in a for loop

You made a good start, but there are several problems with your summation. You don't accumulate into your trapez variable, you ...

27 dagen ago | 0

| accepted

Answered

Why is my own echelon function printing incorrect matrix

I haven't checked all of your code, but I assume this: if ~all(A(k,:))==0 %check to see if row of zeros or not was meant to be...

Why is my own echelon function printing incorrect matrix

I haven't checked all of your code, but I assume this: if ~all(A(k,:))==0 %check to see if row of zeros or not was meant to be...

27 dagen ago | 0

| accepted

Answered

(1/x)>2 . why x<(1/2) is Not the answer

When you multiply (or divide) an inequality by a value, the direction of the inequality changes if the value is negative. So whe...

(1/x)>2 . why x<(1/2) is Not the answer

When you multiply (or divide) an inequality by a value, the direction of the inequality changes if the value is negative. So whe...

28 dagen ago | 0

Answered

How to compare element between two numbers

Like Rik, I am not sure what comparison you are doing based on your terse description. Maybe this, but it doesn't match your st...

How to compare element between two numbers

Like Rik, I am not sure what comparison you are doing based on your terse description. Maybe this, but it doesn't match your st...

28 dagen ago | 0

Answered

[mexFunction in Matlab] printf() function in C code

How you have it written should work, except maybe replace printf( ) with mexPrintf( ). Also, depending on your compiler and sett...

[mexFunction in Matlab] printf() function in C code

How you have it written should work, except maybe replace printf( ) with mexPrintf( ). Also, depending on your compiler and sett...

28 dagen ago | 0

Answered

How to return the outputs of mexFunction() in Matlab?

Put this at the bottom of your code. But remember that if you call mexErrMsgTxt your mex function will exit immediately and not ...

How to return the outputs of mexFunction() in Matlab?

Put this at the bottom of your code. But remember that if you call mexErrMsgTxt your mex function will exit immediately and not ...

29 dagen ago | 1

Answered

Error: Matrix dimensions must agree

You could use V(2:end) or V(1:end-1) instead of V in that line. Or maybe average the two.

Error: Matrix dimensions must agree

You could use V(2:end) or V(1:end-1) instead of V in that line. Or maybe average the two.

30 dagen ago | 0

| accepted

Answered

Write a MATLAB code to estimate the exponential function. Inputs should be x and n. The outputs must include approximate value, true value, error, absolute error, and relative error.

Put your function code for e_to_x() in a separate file called e_to_x.m somewhere on the MATLAB path. Then put your other code t...

Write a MATLAB code to estimate the exponential function. Inputs should be x and n. The outputs must include approximate value, true value, error, absolute error, and relative error.

Put your function code for e_to_x() in a separate file called e_to_x.m somewhere on the MATLAB path. Then put your other code t...

ongeveer een maand ago | 0

Answered

Kindly give me the Matlab code for simplex method?

Use the MATLAB supplied function fminsearch.

Kindly give me the Matlab code for simplex method?

Use the MATLAB supplied function fminsearch.

ongeveer een maand ago | 0

| accepted

Answered

Error when calling the mexFunction

You probably should have gotten a warning from the compiler that your callFun( ) function doesn't return anything, even though t...

Error when calling the mexFunction

You probably should have gotten a warning from the compiler that your callFun( ) function doesn't return anything, even though t...

ongeveer een maand ago | 0

| accepted

Answered

How to turn assigned vectors into a 3x3 matrix?

Assuming vec3 is a typo, result = [vec1;vec2;vec3]; If you need to, you can transpose the result. If your vec3 is not a typo,...

How to turn assigned vectors into a 3x3 matrix?

Assuming vec3 is a typo, result = [vec1;vec2;vec3]; If you need to, you can transpose the result. If your vec3 is not a typo,...

ongeveer een maand ago | 0

Answered

[Create mexfunction from C code] The order of several c files

The order you compile your source code files should not matter. The error seems to be that the compiler can't find the resource...

[Create mexfunction from C code] The order of several c files

The order you compile your source code files should not matter. The error seems to be that the compiler can't find the resource...

ongeveer een maand ago | 0

Answered

When I try to run a function in matlab, I get an error, it is undefined

Put this code in a file called checkEchelonMatrix.m that is on the MATLAB path: function [result] = checkEchelonMatrix(M) %res...

When I try to run a function in matlab, I get an error, it is undefined

Put this code in a file called checkEchelonMatrix.m that is on the MATLAB path: function [result] = checkEchelonMatrix(M) %res...

ongeveer een maand ago | 0

| accepted

Answered

Memory erased in mex file

I would highly advise combining your multiple mex routines into one mex routine that you call with a directive (e.g., a string) ...

Memory erased in mex file

I would highly advise combining your multiple mex routines into one mex routine that you call with a directive (e.g., a string) ...

ongeveer een maand ago | 0

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Answered

Sort Index - Bug

The sort index gives the location in the original array of the sorted values. I.e., the sort results "a" are "original_array(sor...

Sort Index - Bug

The sort index gives the location in the original array of the sorted values. I.e., the sort results "a" are "original_array(sor...

ongeveer een maand ago | 1

Answered

[Create mexfunction from C code] warning: implicit declaration of function

You call myfunction( ) before the compiler has seen a prototype or definition of myfunction( ). Either move your square( ) and ...

[Create mexfunction from C code] warning: implicit declaration of function

You call myfunction( ) before the compiler has seen a prototype or definition of myfunction( ). Either move your square( ) and ...

ongeveer een maand ago | 0

| accepted

Answered

How can we create a vector of length n

There are many ways of doing this. E.g., use the ones( ) function and divide by 10. Or use the zeros( ) function and add 1/10....

How can we create a vector of length n

There are many ways of doing this. E.g., use the ones( ) function and divide by 10. Or use the zeros( ) function and add 1/10....

ongeveer een maand ago | 0

| accepted

Answered

Index Exceeds Matrix Dimensions

You have inadvertantly created variables named "dot" and "cross" that are shadowing the MATLAB functions of the same names. Cha...

Index Exceeds Matrix Dimensions

You have inadvertantly created variables named "dot" and "cross" that are shadowing the MATLAB functions of the same names. Cha...

ongeveer een maand ago | 0

Answered

Saving all outputs of for for-loop

Basic steps for you to take would be: Create your range up front, and not as part of the loop indexing. E.g., a t vector Use t...

Saving all outputs of for for-loop

Basic steps for you to take would be: Create your range up front, and not as part of the loop indexing. E.g., a t vector Use t...

ongeveer een maand ago | 0