# Paul Hoffrichter

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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...

10 dagen ago | 2 answers | 0

### 2

answersSection 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...

ongeveer een maand ago | 1

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...

ongeveer 2 maanden ago | 1 answer | 0

### 1

answerQuestion

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...

5 maanden ago | 0 answers | 0

### 0

answersQuestion

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...

5 maanden ago | 1 answer | 0

### 1

answerQuestion

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 ...

5 maanden ago | 1 answer | 0

### 1

answerQuestion

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 ...

6 maanden ago | 2 answers | 0

### 2

answersMATLAB 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...

11 maanden ago | 1

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

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

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

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

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

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

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

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

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

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

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

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

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

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

| accepted

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

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

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

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

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

| accepted

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

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

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