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Question

Need to improve efficiency in this code, which multiplies a 3D matrix by a 2D one

Hi, I have this code, which uses for loops and multiplies a 3D matrix with a 2D one. It works, but I need f_N to be 3200, and on...

6 years ago | 1 answer | 0

### 1

answerHow can I install MATLAB versions R2011a - R2013a on macOS 10.10 Yosemite or later?

That worked for me - Matlab 2011a on Yosemite 10.10.4 on 7/7/15

6 years ago | 0

Question

Reducing values preceding the 1st minima to zero

I need to reduce the value of all the values before the 1st minima, to zero, e.g. if I had: - x = 0:30; y = [10 9 8 7 6 ...

7 years ago | 2 answers | 0

### 2

answersQuestion

arrayfun once with 4 variables, or twice with 2 in each, then mult. Why do these two approaches give different solutions?

I have the following code to achieve W_n %% CONSTANTS & VARIABLES clear all; close all; L_x = 27....

7 years ago | 1 answer | 0

### 1

answerQuestion

3D matrix manipulation problems

I struggle with this generally and have come up against a barrier again. I'm trying to create vibrational mode functions for ...

8 years ago | 1 answer | 0

### 1

answerQuestion

How do I create a (10,10) matrix containing numbers from 1 to 100?

How do I create a (10,10) matrix containing numbers from 1 to 100? I just want the numbers to go 1 to 10 on the top row, then...

8 years ago | 2 answers | 0

### 2

answersQuestion

Multiplying matrices as cells - 4 dimensional with variable no. of matrices (code works now!)

%I'm trying to work with 4 dimensional cells containing matrices that need multiplying together. %I have three matrices, A_1,...

8 years ago | 1 answer | 0

### 1

answerQuestion

How do I create a vector of n exponentially increasing values from a to b?

I know how to calculate the growth factor, but not how to turn it all into a vector. Here's the start of my code: - n = 4 a...

8 years ago | 2 answers | 1

### 2

answersQuestion

curve of best fit from a few points

I have these points: - x=[1 1.5 2 2.5 3]; y=[19.74 14.26 12.34 11.45 10.97]; and I know I can do a very rough approximat...

8 years ago | 4 answers | 0

### 4

answersQuestion

Simple x-y curve fitting from data set.

I'm struggling to find a simple example of simple curve fitting in MATLAB. I just want to do a best-fit curve for the followi...

8 years ago | 1 answer | 0

### 1

answerQuestion

Building a surface plot

Please would someone be willing to help me build a surface plot based on this code: a = 5 b = 6 x = 1:a; y = 1:b; wher...

8 years ago | 1 answer | 0

### 1

answerQuestion

best way to import this csv

I can't work out how to import this csv file - https://dl.dropbox.com/u/11341635/Data.csv Have tried various methods but I fi...

9 years ago | 2 answers | 0

### 2

answersMATLAB can't find my file

Yes thanks that worked. I just copied and pasted the address from that and it's working now. Many thanks.

9 years ago | 0

Question

MATLAB can't find my file

I'm trying to read in an excel spreadsheet and I can't get it to do it. I put the spreadsheet in the MATLAB home director...

9 years ago | 2 answers | 0

### 2

answersQuestion

can't do a simple csvread for some reason

I'm just trying to do a csvread and I can't seem to get it working. I opened a text edit file (mac) and put: 1,2,3, 4,5,6, ...

9 years ago | 1 answer | 0

### 1

answerQuestion

Can array values be used in plot titles?

I'm really sorry I can't be more specific and include any code, but this is for an assignment and so it would be wrong to publis...

9 years ago | 2 answers | 0

### 2

answersQuestion

Figures displaying differently in and out of MATLAB

My figures are displaying differently in and out of MATLAB. I saved an image as an uncompressed TIF: - <https://dl.dropbox.co...

9 years ago | 1 answer | 0

### 1

answerQuestion

surf plot won't happen because i need a matrix?

surf plot won't happen because i need a matrix? I've just introduced a new variable to my script and I tried doing it using a n...

9 years ago | 1 answer | 0

### 1

answerQuestion

Help with code needed - sampling

Help with code needed - sampling I have an equation of a signal, and I'm supposed to be making a PDF graph of it - but I can'...

9 years ago | 2 answers | 0

### 2

answersQuestion

working with two variables

working with two variables i'm not sure if this is possible, but is it possible to make a 3D plot using an equation based on tw...

9 years ago | 1 answer | 0

### 1

answerQuestion

Help needed displaying multiple plots (and maybe preassigning too)

Help needed displaying multiple plots (and maybe preassigning too) I've got this script, but when I try add x and y labels it r...

9 years ago | 2 answers | 0

### 2

answersQuestion

For loop - what about my min and max values?

For loop - what about my min and max values? I'm using a for loop and although my plot is right, I'm only seeing my maximum x-a...

9 years ago | 1 answer | 0

### 1

answerQuestion

Animation help needed with

Animation help needed I'm trying to display 10 graphs in a sequence as an animation, running from t=1 to t=10. Here's my code...

9 years ago | 5 answers | 0

### 5

answersQuestion

Function definitions are not permitted.... trying to make an FFT thing

Function definitions are not permitted.... trying to make an FFT thing I'm trying to get this working close all clear a...

9 years ago | 3 answers | 0

### 3

answersQuestion

Axis in scientific form - have tried to stop it....

axis in scientific form - have tried to stop it…. I have a plot with a logarithmic scale on the x-axis and I want it to say t...

9 years ago | 1 answer | 1

### 1

answerQuestion

can't do this

can't do this Hi, I'm attempting nested for loops and failing miserably. Here's my code: - close all; clear all; ...

9 years ago | 1 answer | 0

### 1

answerQuestion

For loop and indexing combined?

I think I'm nearly there with this code. close all; clear all; l=0.33;R=100;T=68;m=0.000125;w0=0.1;t=0;mu=m/l;c=sqrt(T/m...

9 years ago | 2 answers | 0

### 2

answersQuestion

Need to change one of my constants into a variable

The original question has been removed by the user.

9 years ago | 1 answer | 0

### 1

answerQuestion

Need to derive the CDF for a function using Matlab

The original question has been removed by the user.

9 years ago | 2 answers | 0

### 2

answersQuestion

Help with code needed - iter + 1

The original question has been removed by the user.

9 years ago | 0 answers | 1