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Steven Lord

MathWorks

Last seen: Today Active since 2002

I joined The MathWorks in the Technical Support department during the summer of 2001 and transferred into the Quality Engineering department in March of 2004. I now work qualifying the core MATLAB numerical functions (PLUS, MINUS, LU, FFT, ODE45, etc.)
Professional Interests: mathematics, MATLAB

For assistance with MATLAB question please post to MATLAB Answers or contact Technical Support using the Contact Us link in the upper-right corner of the page instead of contacting me directly.

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Answered
How do I create a (10,10) matrix containing numbers from 1 to 100?
Another solution using implicit expansion (which wasn't available back in 2013 when this question was posted): n = 10; A = (1:...

38 minuten ago | 0

Answered
How to edit matlab toolbox globaloptim
To get information on the progress of the solver change the Display, OutputFcn, and/or PlotFcn options when you call the ga func...

ongeveer 4 uur ago | 0

Answered
Is there a way to convert times in this format to double, so I can perform mathematical operations on them?
How do you know that 100 represents 1 PM instead of 1 AM? Would it make more sense to adjust x so it includes 1300 instead of 10...

ongeveer 22 uur ago | 0

| accepted

Answered
Solllvinf first order dffnt eqn
If you're going to put spaces around the operators separating terms in the matrix you're creating in example, be consistent. y0...

1 dag ago | 0

| accepted

Answered
Sprintf problems while trying to format a directory name followed by a string
The backslashes and the characters following them are being treated as escape-character sequences. See the second line in the de...

1 dag ago | 2

Answered
Compiled App: previously accessible file is now inaccessible
From the documentation: "MATLAB Runtime only works on MATLAB code that was encrypted when the deployable archive was built. Any ...

5 dagen ago | 0

Answered
How to find the index of the minimum value in a matrix.
Since you're using release R2021b (according to the information listed on the right side of this page) you can use 'all' as the ...

6 dagen ago | 0

Answered
isequal command suddently stops working
So how different are the two datetime arrays you expected to be equal? Do they just look equal? T = datetime('today') N = date...

6 dagen ago | 1

Answered
How to call a function with multi variable in real coded GA in function handle and how to define upper and lower bound of that variable in matlab?
If you've defined Torque to accept 3 inputs as per the code at the end of this answer, you can still use that function in your g...

6 dagen ago | 0

Answered
calculate the minimum probability
Assuming they are the same class and size, you can concatenate them and call min with a dimension input. A = randi([-5, 5], 4) ...

6 dagen ago | 0

Answered
Write sections of a long string as new lines in a text document
sub = 'XYZYXYZYZYZXYZYXYZ0XYXYXYX'; sub2 = replace(sub, '0', newline)

7 dagen ago | 1

Answered
bitget function working explanation needed
Here's an unsigned 8-bit integer. x = 0b10011010u8 % x is 10011010 The lowest order bit of x is 0. This makes sense since x is...

10 dagen ago | 0

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Answered
How can I create this script??
If you're trying to create examples like the ones in this part of the documentation take a look at the tools described on this d...

11 dagen ago | 0

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Answered
How to turn a function handle with 3 inputs (1 variable and 2 parameters) and then assign the inputs parameters and get a function handle with one input? ?
Let's look at the actual time difference between the two approaches. y=1; z=1; f=@(x,y,z)x+y+z; g=@(x)f(x,y,z); h = @(x) x+...

11 dagen ago | 0

Answered
how can I plot in symbolic math with defined x axis limit and Y axis limit with marker at specific points
syms x T=[1 x x^2 x^3]; l=1; N=[1 0 0 0;0 1 0 0;-3/l^2 -2/l 3/l^2 -1/l;2/l^3 1/l^2 -2/l^3 1/l^2]; g=[1 2 3 4]'; f=T*N*g; ...

11 dagen ago | 0

| accepted

Answered
How to generate random coordinates and store the values?
The easiest solution is not to use a for loop at all. p = randi([-10 10], 5, 2) If you must use a for loop, preallocate p to b...

12 dagen ago | 0

| accepted

Answered
Standard keyboard shortcut editor
You can customize the keyboard shortcuts via the Preferences window. You can change individual actions or you can change between...

12 dagen ago | 1

Answered
Can't create a folder outside of the current directory
Use fullfile instead of manually concatenating the path and file name then use the function form of mkdir rather than the comman...

13 dagen ago | 0

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Answered
matlab home license activation
See this Answers post.

14 dagen ago | 1

| accepted

Answered
Standolane application is not working like in app designer
That picture suggests there is an issue but it doesn't say anything about what that issue is. Can you review the log file linked...

15 dagen ago | 0

| accepted

Answered
hi i want to ask,why matlab cannot process the condition for the while loop ? Thank you!
Since you're using the short-circuiting or operator you should check the size of the inputs first. Rather than asking if they're...

15 dagen ago | 0

Answered
Why is opening a file in compiled mode different than direct Matlab mode?
If you're trying to have your compiled application run code that was not present and included in the application at the time the...

18 dagen ago | 0

Answered
How to compare two non-integer value together?
Is what you're trying to do as simple as just multiplication and relational operators? x1=85.36; x2=73.52; x2 >= 0.8*x1

19 dagen ago | 0

Answered
does two polygons interest or not?
You may be able to use the approach from this blog post that determines if two states (represented as polyshape objects) share a...

19 dagen ago | 1

| accepted

Answered
why I cant use laplace?
which -all laplace The laplace function is only defined for symbolic inputs. Your ut is not symbolic, it is a numeric array. A...

19 dagen ago | 0

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Answered
Does lidarViewer app exist?
The last line of the documentation page for that app says "Introduced in R2021b". If you're using release R2021a (as indicated b...

20 dagen ago | 0

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Answered
Saving values from a for loop in a table
temp = [1;2;4;5;1;8;3;4]; % temperature ind = [1;1;1;1;2;2;2;2]; % index cycle = [1;1;2;2;1;1;2;2]; % cycle f = table(cycle,t...

20 dagen ago | 0

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Answered
Renumber matrix with some restrictions
I'm not completely sure how you got from conn to Con, in particular I'm not sure how you generated the third row in Con. [3 4] d...

20 dagen ago | 0

Answered
Error using matlab.graphics.chart.primitive.GraphPlot/highlight>checkEdgesNodePair
s = {'a' 'a' 'a' 'a' 'a' 'b' 'b' 'b' 'b' 'c' 'c' 'c' 'd' 'd' 'd' 'e' 'e' 'e' 'e' 'f' 'f' 'f' 'f' 'g' 'g' 'g' 'g' 'g'}; t = {'a'...

21 dagen ago | 2

| accepted

Answered
get number of output arguments of a function handle
Calling nargout on the function handle itself may give an answer. nargout(@sin) % The sin function returns 1 output But it may...

21 dagen ago | 0

| accepted

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