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**Content Feed**

Stretching a rectangle over a date axis

There's a nice solution to drawing a semi-transparent colored rectangle over a plot at https://stackoverflow.com/questions/45266...

nästan 3 år ago | 1

Question

customize user prompt in console window?

Is there a way to change the user prompt from ">>" in the Matlab console window? In linux systems, this can be done for the bas...

mer än 3 år ago | 1 answer | 1

### 1

answerQuestion

strrep is inconsistent with empty replacement strings

I have reported this as a bug. strrep responds differently when the replacement string is various flavors of empty. 'Proper' w...

mer än 3 år ago | 1 answer | 0

### 1

answerQuestion

How does copy-on-modify operate on structs and classes?

I understand that Matlab uses "copy-on-modify" so matrices, structs and class objects are only copied inside a function when the...

nästan 4 år ago | 1 answer | 1

### 1

answerQuestion

inconsistency when comparing cell arrays with strings vs char array

Why does matlab not compare strings & char arrays the same way in aggregate as it does individually? >> type test_input.m fu...

nästan 4 år ago | 2 answers | 3

### 2

answersHow can I check whether an argument is given or not (inputParser)?

A bit late to the game here, but expanding on Sean de Wolski's brief suggestion, here is a code snippet that should satisfy. Th...

ungefär 4 år ago | 2

preallocate array without initializing

BL is apparently correct -- it can be done in a MEX file -- and I have located a functional solution on Matlab File Eschange: 3...

ungefär 4 år ago | 0

preallocate array without initializing

A little experimenting has determined the following: z = zeros(m,n); is apparently quite fast, but only helpful if one needs...

ungefär 4 år ago | 0

Question

preallocate array without initializing

Is there any way to preallocate a matrix without initializing it to either NaN's, zeros or ones? I'm working with large image...

ungefär 4 år ago | 5 answers | 0

### 5

answersQuestion

How to specify the output type of an fread(fid...) ?

fread(...) lets you specify the data type of the data to be read, but appears to always return the results in a matrix of double...

ungefär 4 år ago | 1 answer | 0

### 1

answerWhy is an empty string not empty? isempty('') returns true, but isempty("") returns false

There have been many good suggestions above for workarounds for code going forward. Thanks all for your input. Having read and...

ungefär 5 år ago | 1

Why is an empty string not empty? isempty('') returns true, but isempty("") returns false

I think I'm going to submit this to MathWorks as a bug, and see what they say.

ungefär 5 år ago | 0

Why is an empty string not empty? isempty('') returns true, but isempty("") returns false

Hmmm. I suppose one could override isempty(...) Attempting to view the code for isempty(), it shows no code, just comments, th...

ungefär 5 år ago | 1

Question

Why is an empty string not empty? isempty('') returns true, but isempty("") returns false

(Updated to clarify the problem) Strings, added in R2016b, are a great addition to matlab, but one aspect is a problem: test...

ungefär 5 år ago | 6 answers | 2

### 6

answersShow memory options in Matlab working on Mac platform

Several cmdline tools for determining physical memory on Macs. I use: [status, cmdout]=system('sysctl hw.memsize | awk ''{...

mer än 5 år ago | 2

If else condition to determine if a year is a leap year

ndays = datenum(Y+1,0,0) - datenum(Y,0,0); isleap = ndays == 366;

mer än 6 år ago | 0

How to keep/use last used CURRENT DIR?

In Matlab R2015a for Mac OS X, this is a setting one can change in the preferences: Preferences | Matlab | General One can...

mer än 7 år ago | 0

Converting a date string to day of year

As Tursa's example implies, matlab datenum's are numeric timestamps (of type double) that can be subtracted (to get a relative o...

mer än 7 år ago | 1

Question

setting ColorOrderIndex before 1st line is drawn?

Per Matlab documentation "Why Are Plot Lines Different", we can reset the color order to restart by using (handle).ColorOrderIn...

mer än 7 år ago | 2 answers | 0

### 2

answersQuestion

how to use readtable with excel spreadsheets, skip extra header lines, and read to "end"?

readtable apparently doesn't support "HeaderLines" option for xls files. From documentation, it does support reading ranges lik...

nästan 8 år ago | 1 answer | 4

### 1

answerQuestion

Why does R2015a ask for permisson to accept incoming connections?

Have just installed R2015a on OS X yosemite, and on startup, it asks whether I want to allow matlab to accept incoming connectio...

nästan 8 år ago | 1 answer | 0

### 1

answerQuestion

How to open files in separate windows in 2014A (Mac OS X version)?

2012 & earlier allowed me to open each file in a new editor window undocked -- i.e. it is own editor window. (I vaguely recall ...

mer än 8 år ago | 0 answers | 0