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Paul Hoffrichter


Last seen: ongeveer een maand ago Active since 2020

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Question


Why isn't low pass filter centered around zero?
I tried several MATLAB filter examples (in R2020a), but all of them appear to be off-centered. Below is example taken from https...

ongeveer een maand ago | 1 answer | 0

1

answer

Question


Gfsk demodulation of signals with non constant amplitude
I have a real GFSK signal that occupies 500KHz whose center frequency could be, say 20 MHz. Not doing the diff(angle(Y)) since a...

ongeveer 2 maanden ago | 0 answers | 0

0

answers

Question


datatip gives same x value for different samples
Here is a simplified example of my problem. How can I get tooltips to show X 500000, X 500001, X 500002, etc.? Instead it shows ...

ongeveer 2 maanden ago | 1 answer | 0

1

answer

Question


How to manually move (smoothly) a set of evenly spaced xlines
In R2020a on a plot I plan on having a loop to produce 20 xlines that are 200 samples apart. (I know that in later versions, one...

3 maanden ago | 2 answers | 0

2

answers

Answered
Section color no longer an option in 2021b?
When I called MathWorks about coloring of the call stack lines (above the current function) when stepping through the r2021b deb...

3 maanden ago | 2

Question


Find longest pattern of [1 0] in array.
I have Bits0 array of 1's and 0's. I would like to get the start/stop indices of the largest sequence of 1 0's. Actually, I expe...

4 maanden ago | 1 answer | 0

1

answer

Question


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...

7 maanden ago | 0 answers | 0

0

answers

Question


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...

7 maanden ago | 1 answer | 0

1

answer

Question


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 ...

8 maanden ago | 1 answer | 0

1

answer

Question


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 ...

8 maanden ago | 2 answers | 0

2

answers

Answered
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...

ongeveer een jaar 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...

meer dan een jaar ago | 1

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
First of all, you should be aware that the following two expressions are equivalent: >> 1:5.12 ans = 1 2 3 4...

meer dan een jaar ago | 0

Answered
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...

meer dan een jaar ago | 0

Answered
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-"...

meer dan een jaar ago | 1

| accepted

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...

meer dan een jaar ago | 0

| accepted

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; ...

meer dan een jaar ago | 0

| accepted

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...

meer dan een jaar ago | 1

Answered
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

Answered
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

Answered
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

Answered
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

Answered
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

| accepted

Answered
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...

bijna 2 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' ...

bijna 2 jaar ago | 0

Answered
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...

bijna 2 jaar ago | 0

Answered
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 ...

bijna 2 jaar ago | 0

Answered
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...

bijna 2 jaar ago | 0

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