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Ian


Last seen: 3 días hace |  Con actividad desde 2014

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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...

más de 4 años hace | 1

Pregunta


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...

más de 5 años hace | 1 respuesta | 1

1

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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...

más de 5 años hace | 1 respuesta | 0

1

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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...

más de 5 años hace | 1 respuesta | 2

1

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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...

más de 5 años hace | 2 respuestas | 3

2

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How 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...

casi 6 años hace | 2

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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...

casi 6 años hace | 0

Respondida
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...

casi 6 años hace | 0

Pregunta


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...

casi 6 años hace | 5 respuestas | 0

5

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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...

casi 6 años hace | 1 respuesta | 0

1

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Why 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...

casi 7 años hace | 1

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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.

casi 7 años hace | 0

Respondida
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...

casi 7 años hace | 1

Pregunta


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...

casi 7 años hace | 6 respuestas | 3

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Show 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 ''{prin...

más de 7 años hace | 2

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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;

alrededor de 8 años hace | 0

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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...

alrededor de 9 años hace | 0

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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...

más de 9 años hace | 1

Pregunta


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...

más de 9 años hace | 2 respuestas | 0

2

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Pregunta


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...

más de 9 años hace | 1 respuesta | 4

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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...

más de 9 años hace | 1 respuesta | 0

1

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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 ...

alrededor de 10 años hace | 0 respuestas | 0

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