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Steven Lord

MathWorks

Last seen: Today 2002 以来アクティブ

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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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...

約8時間 前 | 1

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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...

約11時間 前 | 0

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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) ...

約13時間 前 | 0

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

1日 前 | 1

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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...

4日 前 | 0

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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...

5日 前 | 0

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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+...

5日 前 | 0

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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; ...

6日 前 | 0

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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...

6日 前 | 0

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

7日 前 | 1

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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...

7日 前 | 0

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matlab home license activation
See this Answers post.

9日 前 | 1

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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...

9日 前 | 0

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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...

9日 前 | 0

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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...

13日 前 | 0

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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

13日 前 | 0

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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...

13日 前 | 1

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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...

13日 前 | 0

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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...

14日 前 | 0

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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...

15日 前 | 0

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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...

15日 前 | 0

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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'...

15日 前 | 2

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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...

15日 前 | 0

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double error syms code
Preallocate C to be a sym array. syms x C=zeros(3, 6, 'sym') C(2, 3) = x.^2

15日 前 | 0

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matlab url encoding doubt
s1 = 'Hello\nWorld' s1E = urlencode(s1) s2 = sprintf('Hello\nWorld') s2E = urlencode(s2) whos s1 contains 12 characters inc...

17日 前 | 0

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Can't load saved yoloV2 network in standalone Matlab app 2021a
See the Tip in the "Fixing Callback Problems: Missing Functions" section of this documentation page. Use the %#function pragma t...

21日 前 | 0

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ifft matlab to cpp
The ifft function supports the extended capability of C/C++ code generation using MATLAB Coder. If you have MATLAB Coder availab...

23日 前 | 0

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How to rename a graph node labels ?
Let's take a sample graph and look at it. [B, V] = bucky; B10 = B(1:10, 1:10); V10 = V(1:10, :); G = graph(B10); plot(G, 'X...

29日 前 | 0

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Convert time vector of Year, Month, Day, Hours, Minute to Decimal format
% Sample data d = datetime(2019, 10, (2:6).', 12, 0, 0) startOfYear = dateshift(d, 'start', 'year') p = years(d-startOfYear) ...

約1ヶ月 前 | 0

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How to list all isolated vertices and remove it from the graph?
rng default A = sprandsym(10, (5/100)); G = graph(A, string(1:10)); % Give the nodes names plot(G) isolatedNodes = degree(G)...

約1ヶ月 前 | 0

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