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Tom


Active since 2011

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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...

meer dan 9 jaar ago | 1 answer | 0

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answer

Answered
How 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

meer dan 9 jaar 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 ...

meer dan 10 jaar ago | 2 answers | 0

2

answers

Question


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....

meer dan 10 jaar ago | 1 answer | 0

1

answer

Question


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 ...

ongeveer 11 jaar ago | 1 answer | 0

1

answer

Question


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...

ongeveer 11 jaar ago | 5 answers | 0

5

answers

Question


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,...

meer dan 11 jaar ago | 1 answer | 0

1

answer

Question


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...

meer dan 11 jaar ago | 2 answers | 1

2

answers

Question


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...

meer dan 11 jaar ago | 4 answers | 0

4

answers

Question


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...

meer dan 11 jaar ago | 1 answer | 0

1

answer

Question


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...

meer dan 11 jaar ago | 1 answer | 0

1

answer

Question


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...

bijna 12 jaar ago | 2 answers | 0

2

answers

Answered
MATLAB 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.

bijna 12 jaar 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...

bijna 12 jaar ago | 2 answers | 0

2

answers

Question


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, ...

bijna 12 jaar ago | 1 answer | 0

1

answer

Question


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...

ongeveer 12 jaar ago | 2 answers | 0

2

answers

Question


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...

ongeveer 12 jaar ago | 1 answer | 0

1

answer

Question


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...

ongeveer 12 jaar ago | 1 answer | 0

1

answer

Question


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'...

ongeveer 12 jaar ago | 2 answers | 0

2

answers

Question


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...

ongeveer 12 jaar ago | 1 answer | 0

1

answer

Question


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...

ongeveer 12 jaar ago | 2 answers | 0

2

answers

Question


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...

ongeveer 12 jaar ago | 1 answer | 0

1

answer

Question


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...

ongeveer 12 jaar ago | 5 answers | 0

5

answers

Question


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...

ongeveer 12 jaar ago | 3 answers | 0

3

answers

Question


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; ...

ongeveer 12 jaar ago | 1 answer | 0

1

answer

Question


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...

ongeveer 12 jaar ago | 2 answers | 0

2

answers

Question


Need to change one of my constants into a variable
The original question has been removed by the user.

ongeveer 12 jaar ago | 1 answer | 0

1

answer

Question


Need to derive the CDF for a function using Matlab
The original question has been removed by the user.

ongeveer 12 jaar ago | 2 answers | 0

2

answers

Question


Help with code needed - iter + 1
The original question has been removed by the user.

ongeveer 12 jaar ago | 0 answers | 1

0

answers

Question


Frequency doesn't sound right
Hey, I'm just doing a tutorial for a course I'm doing and one question asks us to recover 'signal 2', where we're given signal 1...

ongeveer 12 jaar ago | 1 answer | 0

1

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