Walter Roberson

Last seen: Today | Con actividad desde 2011

Followers: 45 Following: 0

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I am currently in the middle of moving, so I am not around very much.

Programming Languages:
C, MATLAB, Shell, Perl, Fortran
Spoken Languages:
English

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How can I run a system-level simulation with 802.11be, in which I can use MRU?
https://www.mathworks.com/help/wlan/gs/802-11-standards-supported-by-wlan-toolbox-for-phy-modeling.html 802.11be™ support is cu...

alrededor de 4 horas hace | 0

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How to modify the mesh generated from meshgrid to create a rectangular void in the middle of the mesh
You might be better off taking a different approach. You might be better off decomposing a geometry If you follow the steps fro...

alrededor de 4 horas hace | 0

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Big Tiff Grayscale image looks unsharp/ Grayvalue is not shown properly
When imshow is asked to display an image that is larger than the figure size, it displays a downscale version of the image. The ...

alrededor de 12 horas hace | 0

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Import 2d image to 3d plot
The major problem with mixing 3d plots with images, is that image() is a strictly 2D object -- images disappear quickly when til...

alrededor de 20 horas hace | 0

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Concerned that matlabFunction( ), when converting from symbolic to numerical, changes the sizes of matrices and vectors,
The expression is creating a 1 x 9 vector and reshape() it to 3 x 3. It may be a bit clumsy compared to directly generating a 3 ...

1 día hace | 1

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Keep trailing zeros in an output file.
You cannot do that using writematrix() You can use dlmwrite with a 'precision' option. However, there is no option to adjust th...

2 días hace | 0

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Different color scale?
caxis([0 0.3]); That is affecting the current axis. caxis([0 0.5]); That too is affecting the current axis. Which app...

2 días hace | 0

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reshape data to fit into surf/contour
You cannot do that. Consider using https://www.mathworks.com/matlabcentral/fileexchange/38858-contour-plot-for-scattered-data ...

3 días hace | 0

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How fmincon really work?
fmincon() always tries to minimize the result of the objective function. If the objective function returns negative values, then...

3 días hace | 0

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How to get PWM on digital outputs pins of NI-6052E DAQ card?
Use a single Digital Output (Single Scan) block https://www.mathworks.com/help/daq/digitaloutputsinglesample.html Configure i...

3 días hace | 0

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I have made a code which runs on matlab online but shows an error when run on my local pc
In R2022b, R2023a, and R2023b, https://www.mathworks.com/help/releases/R2023b/audio/ref/speech2text.html has a different calling...

3 días hace | 0

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vpasolve doesn't work with roots for some equations
vpasolve((-1.2068e+21*x - 2.0765e+20)^(1/2)==-2.2185e+10,x) The left hand side involves a square root. The right hand side invo...

3 días hace | 0

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Matlab ilaplace not working properly
syms s sol = ilaplace(40/(s*(2*s^3 + s^2 + 6*s + 2))) disp(char(sol)) fullsol = rewrite(rewrite(sol, 'expandsum'), 'expandroo...

3 días hace | 1

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I am trying to store all the values of (f) and all the corresponding peaks of the resulting wave in two columns and then plot f vs. peaks, but there is a problem.
findpeaks() is returning different numbers of peaks for each frequency. clc clear all tspan = [0 5]; Ic = 0; A=1; resu...

4 días hace | 0

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how to plot cross hatch over correlation map?
In https://www.mathworks.com/matlabcentral/answers/2141881-how-to-make-a-specific-bar-to-be-hatched-with-a-specific-color#commen...

4 días hace | 0

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Hi, how do I fix the error using superiorfloat? I've tried using double() for the subs() like I've seen suggested before but that caused an error.
eomFunc=odeFunction([thetadot,NOFFEOM],[theta,thetadot],mu,R,m,k); The syntax of odeFunction requires that the third parameter ...

5 días hace | 1

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Identifying Boundary Nodes in a Point Cloud
Your red nodes are sometimes immediately adjacent to your blue nodes. There is no way you will be automatically able to differen...

5 días hace | 0

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Matlab 2024a not starting after Mac OS Sonoma 15.1 Update
I recently upgraded to MacOS Sequoia 15.1.1 (a day after upgrading to 15.1). I am now getting this message for all MATLAB versio...

6 días hace | 0

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como resolver este en matlab
exp(x.^2 + y.^2)

6 días hace | 0

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hello Dear!! I'm a new coming in the community I want your help. about coding on MATLAB does the code is correct ? or the using of (&&) is no faire? and how can I correct it? thank you for respond .
if app.LikeCheckBox.Value==true app.EditField.Value='you Like our channal' elseif app.LikeCheckBox.V...

6 días hace | 0

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Solve 𝑔 ′ ( 𝑥 ) = 0 for z in terms of N, a positive integer
Let's try... Q = @(v) sym(v); syms f(x) g(x) G(z) syms z positive syms N integer assumeAlso(N, 'positive'); g(x) = 4*N*s...

7 días hace | 0

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I want to draw pathline for two particle for a 2d problem
When you use griddedInterpolant, then your x must have all of its columns the same, and the row values must be sorted. Your y mu...

7 días hace | 1

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plot csv with column names used automatically as x and y label
data = readtable("results.csv","TextType","string"); plot(data, data.Properties.VariableNames(1), data.Properties.VariableNames...

7 días hace | 0

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How could I make a script for this ecuation where i can solve for f?
syms f epsilon D Re Q = @(v) sym(v); eqn = 1/sqrt(f) == -Q(2.0) * log(epsilon/D/Q(3.7) + Q(2.51)/(Re*sqrt(f))) F = solve(eqn,...

7 días hace | 0

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find intervals for both B and C which make the exponential function F converge to some points.
There is no point in calculating most of the F values since we are only interested in convergence. So we only test the last few ...

7 días hace | 0

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Attempting to interpolate with interp2 and getting errors about the sample point vector?
[x, y] = meshgrid(0:0.01:1, 0:0.01:1); x = [0 1 1 0]; y = [0 0 1 1]; You are overwriting the grids of data produced by meshgr...

8 días hace | 1

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GPU programming for Mac M1
If I recall correctly, someone posted indicating that they had generated mex C++ code that calls into Apple's GPU routines, and ...

8 días hace | 1

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Deciding when to call a Matlab function: Within my symbolic math code, or within my converted numerical code?
Typically you compute in two phases: Symbolic-only phase. Everything that is changeable is generalized as a symbolic variable. ...

9 días hace | 0

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translation of Simulink generated integers into a 1-D vector
If you have a fixed number of values to process at a time, use the DSP Toolbox buffer blocks, https://www.mathworks.com/help/dsp...

9 días hace | 0

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How to make vectors A1, A2,... A127. Rolling time window.
If you have the Signal Processing Toolbox, you might as well use buffer() https://www.mathworks.com/help/signal/ref/buffer.html...

9 días hace | 0

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