I am a postdoctoral associate working on projects applying pharmacometric principles.

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...

7 months ago

Solved

Make a checkerboard matrix

Given an integer n, make an n-by-n matrix made up of alternating ones and zeros as shown below. The a(1,1) should be 1. Examp...

7 months 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 ...

7 months ago

Solved

Column Removal

Remove the nth column from input matrix A and return the resulting matrix in output B. So if A = [1 2 3; 4 5 6]; ...

7 months 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...

7 months 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...

7 months ago

Solved

Determine if input is odd

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

7 months ago

Solved

Make the vector [1 2 3 4 5 6 7 8 9 10]

In MATLAB, you create a vector by enclosing the elements in square brackets like so: x = [1 2 3 4] Commas are optional, s...

7 months ago

Solved

Times 2 - START HERE

Try out this test problem first. Given the variable x as your input, multiply it by two and put the result in y. Examples:...

7 months ago

Solved

Vector creation

Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

7 months ago

Solved

Doubling elements in a vector

Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

7 months ago

Solved

Whether the input is vector?

Given the input x, return 1 if x is vector or else 0.

7 months ago

Solved

Get the length of a given vector

Given a vector x, the output y should equal the length of x.

7 months ago

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...

7 months 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 ...

7 months ago

Solved

Flip the vector from right to left

Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

7 months ago

Question

Unrecognized function or variable 'subtitle'.

This is quite strange but when I plotted with subplot options two different matlab apps (I have one standalone license on my des...

7 months ago | 1 answer | 0

Answered

How can I make a variant submatrix?

You could try below (1) If you are just aiming to the get the submatrices in the diagonal of A... I = length(A); n = 10; % ...

How can I make a variant submatrix?

You could try below (1) If you are just aiming to the get the submatrices in the diagonal of A... I = length(A); n = 10; % ...

7 months ago | 1

| accepted

Answered

Merging the matched rows of two matrices/files

The following loop worked in this case A(:,4)=100; for o=1:size(B,1) for p=1:size(A,1) if abs(A(p,...

Merging the matched rows of two matrices/files

The following loop worked in this case A(:,4)=100; for o=1:size(B,1) for p=1:size(A,1) if abs(A(p,...

7 months ago | 0

| accepted

Question

Merging the matched rows of two matrices/files

I have two sets of data as in the attached files A and B (where length(A)>length(B)). I need to (i) Match: Match the IDs in...

7 months ago | 2 answers | 0

Question

Undefined operator '-' for input arguments of type 'cell'.

Hello, I am trying to subtract two columns (that are in time domain) in spread sheet and create a new column. I attached the .x...

8 months ago | 2 answers | 0

Question

Mapping age/date of birth of IDs in one excel to the same IDs in another

Hi I have two excel files: one file with several IDs (no repeats) with their age/DOB information. Another file with the sam...

8 months ago | 1 answer | 0

Question

How can I generate Conditional Lognormal distribution

Hi Community, I am trying to create the 10000 sets of random variates of two parameters (a and b) from lognormal distribution w...

10 months ago | 1 answer | 0

Question

How can I understand why certain sets of random variates lead to the warning message "Unable to meet integration tolerances without reducing the step size below the smallest value allowed (1.136868e-13) at time t=51"?

My model uses ODE15s to solve a system of 9 ODEs. This model has several parameters out of which few vary in time dependent fash...

10 months ago | 1 answer | 0