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Help with Numerical Differentiation

The error is because you have increased the number of elements in the time array x too high for the number of elements in the re...

Help with Numerical Differentiation

The error is because you have increased the number of elements in the time array x too high for the number of elements in the re...

3 years ago | 0

Answered

Huge plots number visualization/comparison

You can't compare 20-30 algorithms visually without it being incredibly dense and difficult to understand. You could try: 1) Ma...

Huge plots number visualization/comparison

You can't compare 20-30 algorithms visually without it being incredibly dense and difficult to understand. You could try: 1) Ma...

3 years ago | 0

| accepted

Answered

my for loop doesn't seem to be working. I want to add the correct letter to a string based on the equality of two arrays. How can I make this wok?

It seems the problem is that al is a string and therefore counts as one object for MATLAB. You can remedy this by switching to a...

my for loop doesn't seem to be working. I want to add the correct letter to a string based on the equality of two arrays. How can I make this wok?

It seems the problem is that al is a string and therefore counts as one object for MATLAB. You can remedy this by switching to a...

3 years ago | 0

| accepted

Answered

How to blank a grid value with a boundary file?

Use the inpolygon function to determine which points are inside the boundary you define, then replace those points which are out...

How to blank a grid value with a boundary file?

Use the inpolygon function to determine which points are inside the boundary you define, then replace those points which are out...

3 years ago | 0

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Answered

Error using plot: vectors must be the same lengths

The problem is that x and y1 (and y2) are different sizes. Look at the linspace documentation - A = linspace(start,end); retu...

Error using plot: vectors must be the same lengths

The problem is that x and y1 (and y2) are different sizes. Look at the linspace documentation - A = linspace(start,end); retu...

3 years ago | 0

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Answered

How to estimate state space model and designate matrix C=1 or [1, 0]?

You are able to tell ssest which canonical form you expect the output to be in using the 'Form' option. Ex: ssest(data,order,'...

How to estimate state space model and designate matrix C=1 or [1, 0]?

You are able to tell ssest which canonical form you expect the output to be in using the 'Form' option. Ex: ssest(data,order,'...

3 years ago | 0

| accepted

Answered

Graph the solution of 3 different variables vs # iterations given 3 initial condition guesses on three separate graph obtained from an iterative solving while loop.

One possibility for why your charts only appear when you use point markers is what you are using for your plot data. You set i a...

Graph the solution of 3 different variables vs # iterations given 3 initial condition guesses on three separate graph obtained from an iterative solving while loop.

One possibility for why your charts only appear when you use point markers is what you are using for your plot data. You set i a...

3 years ago | 1

Answered

Create a surface between two sets of 3d data points

When you send matrices to the plotting command, the way that it plots depends on the orientation of those matrices % x, y, z al...

Create a surface between two sets of 3d data points

When you send matrices to the plotting command, the way that it plots depends on the orientation of those matrices % x, y, z al...

3 years ago | 0

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Answered

Reorder cell array based on unique string value

If you want to find which of the rows of your string array contain specific values, you can use this: % This can also be genera...

Reorder cell array based on unique string value

If you want to find which of the rows of your string array contain specific values, you can use this: % This can also be genera...

3 years ago | 0

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Answered

Defining different bounds to each variable in fmincon

The documentation for fmincon has the answer: you are allowed to pass upper and lower bounds as vectors. For example, lower_bo...

Defining different bounds to each variable in fmincon

The documentation for fmincon has the answer: you are allowed to pass upper and lower bounds as vectors. For example, lower_bo...

3 years ago | 1

| accepted

Answered

Can someone please help me stop "Index exceeds array bounds." in iteration? Any help is highly appreciated.

You're asking for elements in x1 that don't exist. If we look only at the last loop n == 8 and you are asking for x1(7), but x1 ...

Can someone please help me stop "Index exceeds array bounds." in iteration? Any help is highly appreciated.

You're asking for elements in x1 that don't exist. If we look only at the last loop n == 8 and you are asking for x1(7), but x1 ...

3 years ago | 0

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Solved

ASCII Birthday Cake

Given an age and a name, give draw an ASCII birthday cake. For example, given the name "CODY" and the age 5, return a string wit...

3 years ago

Solved

Missing five

Convert decimal numbers to a base-9 notation missing the digit *5* <<http://www.alfnie.com/software/missing5.jpg>> Too man...

3 years ago

Solved

Polarisation

You have n polarising filters stacked one on top of another, and you know each axis angle. How much light gets passed through th...

3 years ago

Solved

Octoberfest festival

A group of students decided to visit Octoberfest festival. First they ordered one beer, then after half-hour they taken one more...

3 years ago

Solved

Circle/Pentagon Overlap

Your function will be provided with the five vertices of a pentagon (p) as well as the center point (cp) and radius (r) of a cir...

3 years ago

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Inscribed Pentagon?

Your function will be provided with the five vertices of a pentagon (p) as well as the center point (cp) and radius (r) of a cir...

3 years ago

Solved

Is this is a Tic Tac Toe X Win?

For the game of <https://en.wikipedia.org/wiki/Tic-tac-toe Tic Tac Toe> we will be storing the state of the game in a matrix M. ...

3 years ago

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Pentagonal Numbers

Your function will receive a lower and upper bound. It should return all pentagonal numbers within that inclusive range in ascen...

3 years ago

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I Plead the Fifth

Write a function to provide a yes or no answer to the input string. However, it must plead the 5th amendment (return an empty st...

3 years ago

Solved

The Top 5 Primes

This problem series invites you to solve two simple problems related to the integer NUMBER FIVE, in order to celebrate <https://...

3 years ago

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Breaking Out of the Matrix

Do you want to take the Red Pill, or the Blue Pill? If you take the Blue Pill, you will simply pass along to the next problem...

3 years ago

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Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock. Tick. Tock.

Submit your answer to this problem a multiple of 5 seconds after the hour. Your answer is irrelevant; the only thing that matte...

3 years ago

Solved

Energy of a photon

*⚛ ☢ ⚛ ☢ ⚛ ☢ ⚛* Given the frequency F of a photon in giga hertz. Find energy E of this...

3 years ago

Answered

Non-numeric x-axis labelling?

Use xticklabels to add labels to the x-axis of a plot. plot(<plot data>) x_label_locations = [0 1 2] x_labels = {'HT','HT+1',...

Non-numeric x-axis labelling?

Use xticklabels to add labels to the x-axis of a plot. plot(<plot data>) x_label_locations = [0 1 2] x_labels = {'HT','HT+1',...

3 years ago | 0

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Answered

Apply a function to a specific column of multiple matrices?

When you use element-wise multiplication with a matrix and a vector, MATLAB makes some assumptions to make the code simpler. For...

Apply a function to a specific column of multiple matrices?

When you use element-wise multiplication with a matrix and a vector, MATLAB makes some assumptions to make the code simpler. For...

3 years ago | 0

| accepted

Answered

how to plot double against datetime

In the attached CSV, the time data is the same for every 100 columns or so. Because of this, MATLAB is plotting all of the event...

how to plot double against datetime

In the attached CSV, the time data is the same for every 100 columns or so. Because of this, MATLAB is plotting all of the event...

3 years ago | 0

| accepted

Answered

Calculating a matrix with a variable inside

The first issue you are having is because you are telling MATLAB to expect a 1x1 answer with A(i) and then providing a 2x2 matri...

Calculating a matrix with a variable inside

The first issue you are having is because you are telling MATLAB to expect a 1x1 answer with A(i) and then providing a 2x2 matri...

3 years ago | 0

Answered

wrong matrix - provides 3x3 instead of 3x1

When you're multiplying matrices, you several times use element-wise multiplication instead of matrix multiplication. A = [1 2 ...

wrong matrix - provides 3x3 instead of 3x1

When you're multiplying matrices, you several times use element-wise multiplication instead of matrix multiplication. A = [1 2 ...

3 years ago | 0

Solved

Return the largest number that is adjacent to a zero

This example comes from Steve Eddins' blog: <http://blogs.mathworks.com/steve/2009/05/27/learning-lessons-from-a-one-liner/ Lear...

3 years ago