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Star Strider


12,597 2012 이후 총 참여 횟수

Hic sunt dracones!

PROFESSIONAL: Physician (M.D.): Diplomate of the American Board of Internal Medicine; M.Sc. Biomedical Engineering: Instrumentation, Signal Processing, Control, System Identification, Parameter Estimation

NON-PROFESSIONAL: Amateur Extra Class Amateur Radio Operator; Private Pilot, Airplane Single Engine Land, Instrument Rating Airplane; Gamer

NOTE: I do not respond to emails or personal messages, unless they are about my File Exchange contributions.

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How can I change where a variable is placed within the field width using fprintf?
I am not certain what you are doing. Try this without the loop (that is not necessary): fprintf(fid, repmat('%20s\t',1,nume...

약 3시간 전 | 0

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ODE Solver with array value parameter
Try this example: yv = randn(1002,1); % Create ‘y’...

약 4시간 전 | 0

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Assigning random numbers to multiple vectors
I am not certain what you are doing, or what the requirements of what is probably a homework problem are. First, ‘sEggs’ and ...

약 8시간 전 | 0

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Hi there. i want to know that how can i change my MATLAB scale from scientific notation to mannual? I have my values on Y axis as [668.85 2548 5733 10192 15925 22932]
See if the Numeric Ruler Property Exponent does what you want. (This was introduced in R2015b, so it will apply to that and lat...

약 8시간 전 | 0

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How to save vector from loop?
The essence of what you have should probably work. One change: r{v+1} = x(imag(x)==0); This saves ‘r’ as a cell array, all...

약 11시간 전 | 0

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How do I upgrade my MATLAB from 2019a to 2019b
See if Get the Latest Release does what you want.

약 17시간 전 | 0

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naming your rows and column for a matrix
Use array2table to put your matrix in a table (R2013b and later). Name the columns with Specify Variable Names, and the rows w...

1일 전 | 1

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Defining the limits for discrete time sequence on x axis using stem command
Add these lines to each subplot: xt = get(gca, 'XTick'); set(gca, 'XTick',min(xt):max(xt)) so the revised code is now: x=[...

1일 전 | 0

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How to locate a decimal in a matrix?
It depends on what you want. If you want the indices, use both. If you want the values, just rem (or mod) will work. Try th...

1일 전 | 1

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The most efficient way to locate the first 1's in each row of a matrix
The max function will return the indices of the first instances of the maximum value it encounters, in the desired dimension. S...

1일 전 | 1

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Ploting problems with handle, maybe I have changes in this function.
Although I usually suggest that images of code are inappropriate, that might be a way to figure out what is wrong with this line...

1일 전 | 0

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Need help implementing a 2D circular gaussian
If you want to plot a surface, you need to use matrix arguments. Try this: x = linspace(-3, 3); y = x; [X,Y] = ndgrid(x,y...

1일 전 | 1

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exp(A) gives zero in the first argument
Try this: format longE exp([71 307]) producing: ans = 6.837671229762744e+30 2.130129192828224e+133 See the docu...

1일 전 | 0

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how to plot a continuous signal
This should get you started: u = @(t) t>=0; x = @(t,u) cos(200*pi*t.*u(t)); t = linspace(-1, 1); figure(1) plot(t, x(t,u))...

1일 전 | 0

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How to change the color of a plane
How would you define ‘Z0’ as a matrix the size of ‘X’ (or ‘‘Y’) that is uniformly zero? (We only give hints to homework probl...

1일 전 | 0

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how to find slope for certain area in graph.
To limit ‘angle’ (and ‘force’) to calculate the slope only on the ‘angle’ limits between 2 and 14, try this: Lv = (angle >= 2)...

1일 전 | 0

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Problem with function legend
Setting: opengl software appears to work for this problem. Also consider: Use Software OpenGL for Future Sessions. See th...

1일 전 | 0

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how to eliminate undesidered lines
Use the sort or sortrows function to sort your data by the independent variable values.

1일 전 | 0

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Designing a Notch Filter
See: Remove the 60 Hz Hum from a Signal EDIT — (19 Oct 2019 at 3:55) Or, if you want to do it without the filter design ...

2일 전 | 0

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How can I plot a filled cylinder with a specific height?
You can use the cylinder function, however writing your own code is more fun: x = [1 3]; y = [2 5]; r=1; hgt = [2 3]; th=0...

2일 전 | 0

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Problem with my code?
I do not see that you defined ‘Qfresh’ anywhere in your function.

2일 전 | 0

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Curve fitting by Genetic Algorithm
I can fit part of your data, however not all of it, because there is some noise in elements 19 through 24 that your function is ...

3일 전 | 1

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lsqcurvefit fitting not good
Choose different values for ‘x0’. I used these: x0 = [-2.6; 17; 0.7; 7; 0.0001; -0.7; 0.7]; to get this result: x = -...

3일 전 | 1

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The @ symbol in Matlab
The ‘@’ denotes a function handle. See: What Is a Function Handle? for an extended discussion. In this instance, ‘f’ is ...

3일 전 | 0

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How can I plot a X where my dataset crosses the X axis (y=0), but only when dy/dx > 0?
To detect the zero-crossings, the code in Easy way of finding zero crossing of a function , and you can interpolate to get the e...

4일 전 | 0

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Matrix dimensions must agree.
Note that you used element-wise division some times when you divided by ‘(2*L)’ but not other times: ue = 1-2.*cos((3.*pi.*x)....

4일 전 | 0

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Find intersection of 2 normal distribution
The ‘val’ value is the x-value of the intersection, however you need to start fzero in the correct region for it to return the c...

4일 전 | 2

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solving similtanous equations in loop
One approach: x = [1,2,3,4,5,6,7]; y = [1,2,3,4,5,6,7]; [X,Y] = meshgrid(x,y); xv = X(:); yv = Y(:); % -3*w*sin(x)+ 5*q...

4일 전 | 0

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Low Pass filter not working
Your stopband attenuation is likely not sufficient to produce any difference. Try this instead: Rs = 60; ...

4일 전 | 0

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Plotting bacterial growth using odes
I believe Monod kinetics and curve fitting can help. You are not fitting data, so just use the ODE and ode45 call syntax. ...

4일 전 | 0

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