Paul Hoffrichter

Last seen: 14 dagen ago | Active since 2020

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View an .slx model without Simulink
I downloaded a free Intro SDR book from MathWorks. But the labs have .slx files. I would like to be able to view the model. I h...

2 maanden ago | 0 answers | 0

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Viewing .slx model figue without Simulink
I have Matlab R2020a and R2022a, but no Simulink. I downloaded a free Intro SDR book from MathWorks. But the labs have .slx file...

2 maanden ago | 1 answer | 0

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How to zero out short non-zero regions in vector?
For a minLength integer input value, zero out short non-zero regions. The input vector, A, typically will have long regions of ...

3 maanden ago | 1 answer | 0

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How to create Plot button for Complex vector?
I would like to be able to highlight a complex vector in the workspace and be able to click a button to plot complex vector the ...

4 maanden ago | 2 answers | 0

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MATLAB Answers Wish-list #5 (and bug reports)
PROJECTS is too closely coupled with Git CM Some users may want to have a limited view of the files in the Set Path folder list...

8 maanden ago | 1

Answered
How to assign a variable based on an equation?
Inline anonymous functions can be defined as follows: Density_equation = @(x) x^2 + 2*x + 10 T = 1000 Density = Density_equat...

ongeveer een jaar ago | 1

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How to set the plot start to zero ? I have some measurements. On the x label, they start from 0 to 6, but from 1 I can see something change on
First of all, you should be aware that the following two expressions are equivalent: >> 1:5.12 ans = 1 2 3 4...

ongeveer een jaar ago | 0

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How do I find the separation between the harmonics for a graph of a function sinx/x against x?
Not sure if thisis what you are looking for. x=linspace(-90,90,10000); y=sin(x)./x; figure(11) plot(x,y); axis([-90 90 -1.5...

ongeveer een jaar ago | 0

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How create an Histogram of datas?
c = [ "3-" "0" "0+" "0-" "0+" "0" "0-" "0-" "0-" "0-" "3" "0-" "U" "3" "U" "U" "2+" "0" "1-" "2-" "3-" "1-"...

ongeveer een jaar ago | 1

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Answered
Converting a 1D antenna array to planar array in 3D space
Fc=1255e6; %/Hz Carrier frequency C=3e8;%/m/s Speed of light Lambda=C/Fc;%/m Wavelength ESepx=0.49*Lambda; %/m Element separa...

ongeveer een jaar ago | 0

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Answered
How to set the plot start to zero ? I have some measurements. On the x label, they start from 0 to 6, but from 1 I can see something change on
Here is some made up data to illustrate one approach: x = [ 0 1.1 2 3.3 5.12]; y = [146 145.9 145.8 139 128; ...

ongeveer een jaar ago | 0

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Answered
For loop with two conditions
>> this code where it should stop as soon as one of the conditions has met But the break just gets you out of the while loop w...

ongeveer een jaar ago | 1

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discrete time signal, i am not able to generate a function for the following question
Try this to fix the error: N1 = 0; N2 = 8; alpha = 0.8; figure(1) x= alpha .^ (N1:N2); plot(x)

meer dan een jaar ago | 0

Answered
How to multiply 2 fft's with different lengths?
Is this your desired effect? [x,Fs]=audioread('hello.wav'); sound(x,Fs); T=1/Fs; disp('Wait for music to complete') pause( ...

meer dan een jaar ago | 0

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How can I run multiple iterations that plot on the same graph?
If you are new to Matlab programming, then you are probably used to a for-loop and you are plotting the curve in each iteration....

meer dan een jaar ago | 0

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How to delete/cancel trailing zeros in complex and imaginary numbers?
a = 1.22000000 + 2.150000000i fprintf("%g + %gi\n", real(a), imag(a)); fprintf("%.2f + %.2fi\n", real(a), imag(a));

meer dan een jaar ago | 0

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How do i create a large matrix with a formula?
Since you did not specify T and f, I assume you wanted symbolic notation. (I picked N = 10 to show a brief output.) N=10; n = ...

meer dan een jaar ago | 0

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How to find the CUP time used by each function in my code?
If you need a profile of the relative time spent in every function when running your entire script, then while viewing the main ...

meer dan een jaar ago | 0

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after applying a filter -i design- to a real signal, it returns complex signal after ifft
Your imaginary part only is non-zero due to the usual floating point roundoffs and truncations. Fix this using round: signal=if...

meer dan een jaar ago | 0

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Answered
How to construct array with certain slope ?
Look at this rotation script example: https://www.mathworks.com/matlabcentral/answers/93554-how-can-i-rotate-a-set-of-points-in...

meer dan een jaar ago | 0

Answered
Problems with changing the order of a binary representation
NJ=4 for i = 1:2^NJ-1 struct(i,:) = fliplr(dec2bin(i,NJ)); end struct = 15×4 char array '1000' '0100' ...

meer dan een jaar ago | 0

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How can I justify my matrices?
I find this form using Live Editor preferable to pretty. syms t1 t2 t3 d3 a2 J11 = [-cos(t1)*(d3*cos(t2+t3) + a2*cos(t2)), sin...

meer dan een jaar ago | 0

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How can I insert zeros into every other index of a column vector?
@carles Martinez >> and in an horizontal array? Whether A is vertical or horizontal, use upsample. A = 1 2 3 ...

meer dan een jaar ago | 0

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How to write summation in matlab with two variables?
I am new to sym, so I thought I would give this a try. Please check carefully, as I did not have time to do so. I hope you are d...

meer dan een jaar ago | 0

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Answered
Newton Raphson - saving all values and using last iteration value as initial for next
The final x values match your spreadsheet results. Your suggested x0 converges too soon to be interesting. Set it to 1.0 to actu...

meer dan een jaar ago | 0

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Index in position 1 is invalid. Array indices must be positive integers or logical values.
Would be very useful if you are able to post a minimal program exhibiting the error that we could run. In the debugger, set the ...

meer dan een jaar ago | 0

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I need help with using a while loop
Looks like you are trying to solve a difference equation. Take a look at what is happening: c1 = 0.1; v1 = 0.1; v2 = 1; p = ...

meer dan een jaar ago | 1

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Keep a temporary variable after parfor
>> Parfor loop works when i comment out the plotting parts of the code. I tried what you said and only experienced what you wro...

meer dan een jaar ago | 0

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how to fix Warning: Imaginary parts of complex X and/or Y arguments ignored
If you have a negative number raised to a non-integer power, you can sometimes get a complex number. Take a look at: https://ww...

meer dan een jaar ago | 0

Paul Hoffrichter

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