how to make anonymous function and it's plot?
Either include all of them as arguments: R=@(wl,T,h,c,k) 2*pi*c^2*h./(wl.^5)./(exp(h*c./wl/k/T)-1); h=6.626e-34; c=3e8; k...

5 giorni ago | 0

Detect and remove the artifacts in PPG signal via MATLAB
One approach: D1 = load('Leo David (2) Examples.mat'); ppg85 = D1.ppg(85).data; idx = find(ppg85 < -2); ppg85(1:max(idx))...

5 giorni ago | 0

How to plot x-y and x respect to t and y respect to t diagram with ODE ?
See the documentation section on Solve a System of Differential Equations in the Symbolic Math Toolbox documentation. It will d...

5 giorni ago | 0

| accepted

how to plot points in plotted graph?
I have absolutely no idea how you want them plotted. Try this: I=[116 207 414 611 909 1009 951 909 805 615 311 120]; Ta=[...

6 giorni ago | 1

| accepted

Error in ode45; Graphing ODE
Note that ‘cdcdt’ is not the same as ‘dcdt’. Change this to: dcdt = [ p(1).*((p(2)*k+k)/v1); p(2).*((k*p(1)-k)-cbar/v2...

6 giorni ago | 1

| accepted

Integral construction and betainv
Since ‘pbar’ and ‘rho’ are vectors, use the 'ArrayValued' name-value pair in the integral call: ES_95=(1/(1-alpha))*integral(@...

6 giorni ago | 0

| accepted

The step function has a number of outputs that you can request from it. The documentation section on Step Responses of Identifi...

6 giorni ago | 0

Normal distribution function in Matlab
Use element-wise operations on every multiplication, division (and exponentiation, although not used here). This works: tau...

6 giorni ago | 1

| accepted

How to change exponentiation
I wrote a littlle utility function for my own use a while back to do this. Adapt it to do what you want: expstr = @(x,n) [x...

6 giorni ago | 0

| accepted

Low pass filter design
My preference would be an elliptic IIR filter for efficiency. See the documentation for ellip for details. For best results, b...

6 giorni ago | 0

| accepted

Butterworth Bandpass filter and discreate fcn
The bilinear approach would be my choice. Also consider the impinvar function. These appear to be the only Signal Processing...

6 giorni ago | 0

If clause – if column blank than
Try this instead: if isempty(data_pp.Anxiety_RESP) .

7 giorni ago | 0

Plotting amplitude of individual frequencies over time.
The pspectrum function can likely do what you want. Use the 'spectrogram' type and choose the x-axis column that corresponds to...

7 giorni ago | 0

| accepted

fminsearch with matrices help
This might do what you want: x = rand(150,3); % Create Data y = rand(150,3); ...

7 giorni ago | 0

Store value of variable computed in ODE Solver at the specified time steps.
There are not enough variables provided to run your code. This is how I would do it: tspan = 0:0.01:10; options = odeset('...

7 giorni ago | 1

| accepted

how to make smooth the vertcat of more vectors
I am not certain what you want, since the posted file is not the same as the posted plot image. Try this: y = readmatrix('c...

7 giorni ago | 0

| accepted

How to print Rsdnrm after fitting?
The ‘Rsdnrm’ output is a scalar double value, and exists in the workspace after lsqcurvefit completes its estimation. Just use ...

7 giorni ago | 0

drawcircle function outputs circle or oval by default?
Use: axis('equal') and it magically becomes a circle! See the documentation on axis for details.

8 giorni ago | 0

How to find the upper limit of a complex integral
I’ve been working on this for a while. This works, however at some point, fsolve finds undefined values at the intial point, ...

8 giorni ago | 0

| accepted

How to fix my code for ode45
Delete the single quotation marks. This runs without error: f = @(x,y) (9*14^(1/2)*exp(-(2*x)/9)*sin((14^(1/2)*x)/9))/7; [...

8 giorni ago | 0

| accepted

What is wrong with my code it keeps telling me that i have 'Error: File: labmaterials.m Line: 67 Column: 109 Invalid expression. When calling a function or indexing a variable, use parentheses. Otherwise, check for mismatched delimiters.
The problems are too many to specifically enumerate: Ms(iii)=2/pi*(w1*log*[tan*[acos*[w1/l_vector]]+l_vector/w1]+l_vector*(pi/...

8 giorni ago | 0

| accepted

Plot / Solve system for nontrivial answer. dot operator issue?
Since you wnat a numeric result, use vpasolve instead, wither with an initial value (if you have an idea of what that is) or a r...

8 giorni ago | 0

| accepted

Should I use the absolute value of fast Fourier transform or the conjugate in signal analysis?
Note that the plot is ‘Power Spectral Density’. Power is the square of magnitude. The abs value is the square root of the co...

8 giorni ago | 0

| accepted

How can I solve a problem related to the output argument.
The way I usually deal with this is to define all the outputs as NaN in the beginning of the function. The ones that are assign...

8 giorni ago | 0

Matlab on a new computer
First, back up all your user files (including yuour startup.m file if you created one) to a thumb drive or SD chip and transfer ...

8 giorni ago | 0

Plotting mean across a graph
Try this: plot(xlim, [1 1]*Ymean, 'r','LineWidth',1.5) The ‘Ymean’ value should be a constant, so it is necessary to plot it ...

9 giorni ago | 0

How to get fmincon to work with an ode45?
See: Optimizing a Simulation or Ordinary Differential Equation

9 giorni ago | 0

| accepted

XLabel and YLabel Font Size
The Control System (and System Identification) Toolbox plot functions properties are difficult to change. That can be done, how...

9 giorni ago | 0

| accepted

Try this: x = 1:10; y1=[0.5 1.7 1.75 1.9 2 2.1 2.4 2.6 2.7 2.9 ] y2=[0.7 1.8 1.9 2 2.3 2.5 2.7 2.8 2.9 3] save('XYvectors...

9 giorni ago | 0

| accepted