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Unable to use REFPROP material library
That version of refprop is no longer supported https://www.mathworks.com/matlabcentral/answers/1711870-i-am-trying-to-use-matla...

6ヶ月前 | 0

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stop animations with pause()
Create a uicontrol radio button to act as a stop button. TheUIControl.Value = 0; for i=1:10 if TheUIControl.Value == 1 ...

6ヶ月前 | 1

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Why do I get an error when I ran the integral?
f(x) = piecewise(x >= hU & x <= xl, (2 * x) / i^2, x > xl & x <= xh, (2 * x) / (pi * i^2) * acos(((x^2) - hU^2 + x0^2 - i^2)...

6ヶ月前 | 0

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Hello. Im currently creating a code in Matlab and I am running into this error that I will attach in a screenshot. I am new to Matlab so I am having trouble fixing it.
y=conv(x,h,'full')*0.01; The length of a 'full' convolution is longer than than the individual inputs: it is (length(First) + l...

6ヶ月前 | 0

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does matlab have a command similar to Excel's LINEST
The slope is the derivative, so derivative of 6/5*g*h --> 6/5*h which you could easily get using the symbolic toolbox.

6ヶ月前 | 0

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Does this plot look right?
You have a source signal that consists of a single frequency. The theoretical outcome for the fourier transform is all zero ever...

6ヶ月前 | 0

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How can I write missing value ncwriteatt
You cannot set the _FillValue of a variable after the variable is created. https://www.mathworks.com/help/matlab/ref/nccreate.h...

6ヶ月前 | 0

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How can I write NaN as missing_values ncwriteatt
You cannot set the _FillValue of a variable after the variable is created. https://www.mathworks.com/help/matlab/ref/nccreate.h...

6ヶ月前 | 0

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separating columns in data files
You only have one column of data -- those are complex numbers. "Only positive" would restrict to just the very first point. Eve...

6ヶ月前 | 0

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help with symbolic int result
syms theta psi No Lo real assumeAlso(theta>0 & theta<2*pi) N1 = (sym(1)/sym(2))*(No/sym(1))*sign(sin(sym(1)*theta +...

6ヶ月前 | 0

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Even a simple code I wrote in matlab does not appear in the command window section, only the name of the file appears for example >>untitled1 How can I solve this?
That is normal when code is stored in a file. When lines end in semi-colon, that is a request to not output the result of the l...

6ヶ月前 | 1

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Mean of a cell array
mean(cat(3, TheCellArray{:}),3)

6ヶ月前 | 2

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How to solve 'out of memory' problem while solving coupled differential equation ?
You have what is probably a stiff system, but you are using ode45() for it instead of using a stiff solver such as ode15s() You...

6ヶ月前 | 1

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How to create a contour plot from 3 vectors
numcontours = 5; [minx, maxx] = bounds(X); [miny, maxy] = bounds(Y); xv = linspace(minx, maxx); yv = linspace(miny, maxy);...

6ヶ月前 | 0

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How to create a contour plot from 3 vectors
numcontours = 5; %https://www.mathworks.com/matlabcentral/fileexchange/38858-contour-plot-for-scattered-data TRI = delaunay(X,...

6ヶ月前 | 0

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different symbols with different colors in a same legend
There isn't any way to do that with legend() You might want to start with https://www.mathworks.com/matlabcentral/fileexchange/...

6ヶ月前 | 0

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How do I change this system with function handles to linear equations to plot discretely?
u = @(n) double(n>=0); %converts symbolic u to array of n uu = @(n) 1*(n>=0); %unit step function x = @(n) u(n-2)-u(n-4); n=[...

6ヶ月前 | 0

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Solving non linear equations
syms J1 J2 J3 T1 T2 T3 T4 Jm = 5077.12; Js = 301.32; Je = 330.136; A2 = 449200; A4 = 519000; Fms = 0.305; ...

6ヶ月前 | 0

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Interpolating by latitude and depth
interp2() expects the first two inputs to be either vectors or 2d arrays. If they are vectors then interp2() automatically expan...

6ヶ月前 | 0

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Subtraction Should Show Zero But Shows Small Error
What is going on here is that MATLAB represents double precision numbers in IEEE 754 Double Precision format. That format involv...

6ヶ月前 | 1

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how to calculate product of two 3D matrices (both 101 by 101 by 101 ) in matlab ?
u^2 is not defined for 3D matrices.

6ヶ月前 | 0

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Third-order polynomial equation which complex roots
syms c k L eqn = c^3 ... - c^2*(2*k*exp(4*k*L) + 2*k*exp(2*k*L) + exp(4*k*L) - 6*k^2*exp(2*k*L) + 1) / (2*exp(2*k*L) * k *...

6ヶ月前 | 0

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I am getting the error The file may be corrupt while trying to save a fig (7.5E7 data samples for 8 channels) using Matlab ver17b: The file may be corrupt
Possibly the generated fig file would be more than 2 gigabytes. If you were trying to savefig it... you might need to save() th...

6ヶ月前 | 0

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How do I use fprintf to print to a text file?
filename = "AppropriateName.txt"; [fid, msg] = fopen(filename, "wt"); if fid < 0 error('failed to open file "%s" because ...

6ヶ月前 | 0

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Variable precision point for fprintf command set by user input
fprintf( fprintf(' %%10.%df'), precision), Ab(i,:))

6ヶ月前 | 1

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Trying to set up a matrix, getting error message
You have accidentally created a variable named fscanf

6ヶ月前 | 0

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The fastest method to perform sum of function
The fastest way of adding the values depends upon the fine details of your hardware, and on the details of how the data is laid ...

6ヶ月前 | 1

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How do I make greek letters appear as symbols and use them as variables?
You cannot do that. If you use the Symbolic Toolbox, and you are using LiveScript (or MATLAB Online, or MATLAB Answers), and yo...

6ヶ月前 | 1

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error: Array indices must be positive integers or logic
Due to floating point round-off, the result A+(B*x(i)) might not be exactly an integer. You should round() it.

6ヶ月前 | 0

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How to fix the error in integration?
xmin = 0; xmax = 1; jb=zeros(tstep,xstep); X = linspace(xmin,xmax,xstep-1); The X values are going to be between 0 and 1...

6ヶ月前 | 0

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