Community Profile

# 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.

All

#### Content Feed

View by

How to input functon arguments without order?
As of release R2021a you could do that by requiring all the inputs to be specified as name-value pair arguments. But if your fun...

alrededor de 4 horas ago | 0

How to use MATLAB editor more effectively
What you're describing is the code folding functionality. See the "Fold Code" section on this documentation page for more inform...

alrededor de 5 horas ago | 0

| accepted

Why does not string(f.name) work, f = dir(folder)?
filename = fullfile(matlabroot, 'toolbox', 'matlab', 'elfun', '*.m'); D = dir(filename) s = string({D.name}); Now you can ope...

alrededor de 6 horas ago | 0

Question about different results using PCA and SVD
From the Algorithms section on the pca documentation page: "The pca function imposes a sign convention, forcing the element with...

1 día ago | 1

| accepted

Is there a more efficient way to format my vector rather than manually change the code by hand
%Time T = 5400; INT = 900; tme = 0:INT:T; %Number of Positions and Impacts Pn = 1320; In = [30, 60, 75,...

1 día ago | 0

| accepted

How can I make these few lines a function?
If you want all the axes you create going forward to have those property values, consider changing the default property values r...

1 día ago | 0

how to make something between quotation automatic!
If you're just fitting polynomials you could use polyfit and polyval, specifying n as the third input argument. load census n ...

1 día ago | 0

| accepted

How and where can I get the clearance permission for using maps generated in MATLAB?
For legal questions like this please create a service request for Customer Service.

3 días ago | 0

Why is ascii2str not recognized in 2022a?
According to the documentation "The operator ascii2str is supported only in Stateflow® charts that use C as the action language....

4 días ago | 1

Natural Cubic Spline Interpolation
Set a breakpoint on the first line of your code. Run your program on an example that you (or your textbook) have worked out, ste...

5 días ago | 0

Find country code from city name
As far as I'm aware there's no function in MATLAB to map address information to country information, but if there is a web resou...

7 días ago | 0

pause() function is inaccurate
You probably want to create an audioplayer object and call playblocking on it instead of using sound. load handel sound(y, Fs)...

7 días ago | 2

| accepted

Couldn't find the file
That data file is in the example's folder, which is not on the MATLAB path by default. If you open the example in MATLAB using t...

7 días ago | 0

problems with creating a multiplication table
If you change your code so as to no longer use table as a variable name (since table already has a meaning in MATLAB) you could ...

7 días ago | 1

value of type 'sym' is not convertible to 'double'
You cannot create a sparse matrix that contains a symbolic expression. Either store the symbolic expression in a symbolic matrix...

8 días ago | 0

"Precise" random variables from a distribution
Since 0.01 cannot be exactly represented in double precision, your values may not be exactly multiples of one-hundredth. But if ...

9 días ago | 0

| accepted

using inputdlg function in user defined function
Since you're doing this in a MATLAB Function block, rather than bringing up a dialog each time I'd consider using a Constant blo...

9 días ago | 0

matlab.unittest.TestCase automatic retry
This isn't directly an answer to your question, but as an alternative to always needing to rerun some or all of your tests can y...

9 días ago | 0

Round towards specific values in an array
A = [2000 1999 1998 1996 1993].'; B = [2000 1995 1990 1985 1980].'; Assuming all the elements of B are unique, interpolate to ...

9 días ago | 0

LaTeX interpreter is not working correctly with code including subscripts in Control System Toolbox legends
This is Not a Bug. In LaTeX, A_bc will only treat b as a subscript. In order to include multiple symbols in a subscript (or supe...

9 días ago | 0

add columns to matrix
In general you can use blkdiag. A=[1 2 3 6 ]; B=[4 5 5 6 9 8 7 6 9 6 8 6 9]; D=[4 1 2 3 5 68 9 6 9 6 9 6 9 6 9 63 45 82 85 96...

10 días ago | 0

| accepted

How can I edit code so only bottom graph is displayed.
The histcounts function does not return an object with properties like the histogram function does, but the outputs from histcou...

11 días ago | 0

Plotting a multi-dimensional matrix
In MATLAB select the Plots tab on the Toolstrip. Click the small downward pointing triangle to the right side of the Plots secti...

11 días ago | 0

Detect and remove outliers in signals
You could try filling the outliers with NaN values (or some other method) using the filloutliers function. x = [1 2 99 4 5] fi...

12 días ago | 0

Matlab 2020a doesn't find complier when it did with 2017a
According to the Supported Compilers column entry for release R2020a on the Previous Releases system requirements page Windows S...

13 días ago | 0

When will Ubuntu 22.04 be supported?
Ubuntu 22.04 LTS is not listed on the Platform Road Map. Therefore as far as I'm aware we have not announced when or if this OS ...

13 días ago | 0

find(V==max(V),1,'first') returns index that is way beyond the first index where X reaches the maximum
What are the sizes of the variables involved in creating your plot above, and what is the exact syntax for the plot function tha...

13 días ago | 0

How to plot and save the content of a 5D array?
Is your main question how to assemble the file name? I'd use a string array. n = 1; p = 42; q = 999; filename = "part" + n +...

13 días ago | 0

| accepted