Question


indexing cell array of arrays
I have a cell array with M arrays of [Nx1] elements in each cell. How do I create a cell array with the same M arrays but with ...

9 years ago | 4 answers | 0

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How to create a weighted random number in matrix?
a = rand(10); % 10x10 matrix b = a>.6; % all elements of a > .6 are 1 all < .6 are 0 60% should be 1's, 40 % should b...

9 years ago | 0

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How do I create column names?
Can you use a structure instead with fieldnames of the column names? 1. Read the names in as strings. 2. Read the data int...

9 years ago | 0

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Answered
How do I read in an Excel Spreadsheet with these types of numbers?
I get a different answer 1.0000 0.0344 0.4511 0.2064 0.1404 What matlab appears to be doing is interpretin...

9 years ago | 0

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Answered
calling one function from another
You're calling a function GetSumRect(...) that is not defined.

9 years ago | 0

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Answered
how it works in the following example Vo=Vs.*(Vs>=0)
I believe you are asking what Vo=Vs.*(Vs>=0); does, correct? .* is an element by element multiply. Vs>=0 re...

9 years ago | 0

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Question


Copy of one field of a structured array
Is there a way to make a copy of one field of a structured array without doing a loop? I have tried but it just results in the f...

9 years ago | 3 answers | 0

3

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Answered
how can i update my edit box output in GUI
To update the handles.ct (I'm guessing this is your edit text box) function dev_sel_Callback(hObject, eventdata, handles) ...

9 years ago | 0

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FFT and convert the vector to a power of two
Try n = length(x); pow = nextpow2( n ) tam = 2.^pow; x(n:tam) = 0;

9 years ago | 0

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How to obtain matrix with single value in one column?
P = p*ones(41,1);

9 years ago | 0

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Where is the problem 2
One too many parentheses ). Take one off.

9 years ago | 1

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Question


multiply each element of structured array, assignment of structured array
I'm not exactly sure if I'm using the right terminology. I have A(1).B = 5; A(2).B = 6; A(3).B = 7; >>A.B ...

9 years ago | 2 answers | 0

2

answers

Question


vector of strings to cell array
I have a list of numbers as strings that I want to assign to a cellarray. I currently just do a for loop to make the assignment ...

9 years ago | 1 answer | 0

1

answer

Question


Vector Indexing into 2D array
I have a 2D array and I want to pick out a different row value for each column. Here is an example: A = magic(3) ans ...

9 years ago | 1 answer | 0

1

answer

Question


Is there a migration path from gui's made in guide to programmatic gui's?
I'm getting tired of GUIDE bogging down. Is there a way to convert my .fig file to a programmatic GUI (other than manually)? Or...

9 years ago | 3 answers | 0

3

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Answered
Using GUI to saving/loading directory.
Put this in your callback [filedat,pathdat] = uigetfile('*.dat','Select a Data File'); Then you can import the file and...

9 years ago | 0

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how can i add a sin wave of 400hz with a wav format audio file of 44100hz in matlab ??
44100Hz refers to the sampling rate of the WAV file. Is your sine wave sampled at the same rate but is a 400Hz tone? If so, jus...

9 years ago | 0

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How can I start a video in a new window from Matlab?
Use VideoReader() to import the movie, then movie() to play the movie in another window.

9 years ago | 0

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What is the difference between ifft(f) and ifft(f,n)?
if N =length(f), there is no difference between ifft(f) and ifft(f,N)

9 years ago | 0

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How to make input size the same as output in interp2
you can make the scalar into an array with X = x*ones(1,length(y));

9 years ago | 0

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Save figure as seen on screen?
It's the same ratio at least. You may want to look at using export_fig() which you can download from the file exchange. This wi...

9 years ago | 1

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How do I load a previously saved mat-flie into a GUI?
Instead of temp2 = load(walletSum___); try load walletSum.mat or try wS = load(walletSum.mat); temp2 =...

9 years ago | 0

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writing a function in matlab
You can write your function like this: function [out] = myfunction(filenums) % % n = 0; out = zeros(length(fi...

9 years ago | 0

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Answered
Typesetting in a figure legend
Try this: h=legend('$\bar{u}$', '$\bar{\bar{u}}$') set(h,'interpreter','latex')

9 years ago | 0

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My First GUI: open a file, read the data, select which columns to plot, then plot it
To update a listbox with tag "mylistbox" with a cell of strings in mylistboxstr set(handles.mylistbox, 'String', mylistbox...

9 years ago | 0

Question


For stand-alone exe, how do I include a folder of files and know how to access them.
I have a folder of files I have added to a stand-alone exe. I have been using Desktop->WindowsStandAloneApplication -> Build. ...

9 years ago | 3 answers | 2

3

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How can I create a variable consisting of data from other (1,1) datasets
use an index P(1) = Pone P(2) = Ptwo ...

9 years ago | 0

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Stopping my function from doing iteration (infinite while loop)
function y = mysqrt(x,y0,tol) y = (y0 + (x/y0))/2; while abs(y-y0)>tol y0 = y; y = (y + (x/y)...

9 years ago | 1

Question


eval fails with load when path or filename has space(s)
If I run load [dirpath filename] and dirpath or filename has a space, it loads the file just fine. But if I use ...

9 years ago | 1 answer | 0

1

answer

Answered
Header seperation and column matching
Suppose your file has a header like radiation, temperature, voltage data.... Then your program would get the head...

9 years ago | 0

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