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

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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...

4 månader ago

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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...

4 månader ago

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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 ...

4 månader ago

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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]; ...

4 månader ago

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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...

4 månader ago

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Pizza!

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

4 månader ago

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Determine if input is odd

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

4 månader ago

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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...

4 månader ago

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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:...

4 månader ago

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Vector creation

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

4 månader ago

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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 ...

4 månader ago

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Whether the input is vector?

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

4 månader ago

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Get the length of a given vector

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

4 månader ago

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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...

4 månader ago

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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 ...

4 månader ago

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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 ...

4 månader 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...

4 månader ago | 1 answer | 0

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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; % ...

4 månader 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,...

5 månader 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...

5 månader 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...

6 månader 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...

6 månader 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...

8 månader 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...

8 månader ago | 1 answer | 0