Answered

Plotting while skipping the middle point in a vector

hello if you can avoid update the plot inside the for loop here I store your data in xx and yy arrays and after the for loop...

Plotting while skipping the middle point in a vector

hello if you can avoid update the plot inside the for loop here I store your data in xx and yy arrays and after the for loop...

4 months ago | 1

Answered

Rows interpolation in a matrix

hello you can use fillmissing for this task data = readmatrix("data.txt"); data(abs(data)<eps) = NaN; data_out = fillmiss...

Rows interpolation in a matrix

hello you can use fillmissing for this task data = readmatrix("data.txt"); data(abs(data)<eps) = NaN; data_out = fillmiss...

4 months ago | 2

Answered

How to call a own function in other mfile?

hello you simply need to have your function(s) located at the end of your script (mfile) % example code %% main code x =...

How to call a own function in other mfile?

hello you simply need to have your function(s) located at the end of your script (mfile) % example code %% main code x =...

4 months ago | 0

| accepted

Answered

How do I reorder a regression plot in the desired sequence?

hello again you could do that NB that the cos^2 is not what I used A simple sin (or cos if you prefer works better - your ...

How do I reorder a regression plot in the desired sequence?

hello again you could do that NB that the cos^2 is not what I used A simple sin (or cos if you prefer works better - your ...

4 months ago | 0

| accepted

Answered

How to merge and smooth multiple curves in a plot, if there are discrete points?

hello tried afew options, probably here my best result in the very limited time I have now : this is a demo on the first two...

How to merge and smooth multiple curves in a plot, if there are discrete points?

hello tried afew options, probably here my best result in the very limited time I have now : this is a demo on the first two...

4 months ago | 0

| accepted

Answered

Plot 3D surface within nonlinear bounds

hello this is a job for inpolygon Points located inside or on edge of polygonal region - MATLAB inpolygon - MathWorks France...

Plot 3D surface within nonlinear bounds

hello this is a job for inpolygon Points located inside or on edge of polygonal region - MATLAB inpolygon - MathWorks France...

4 months ago | 1

Answered

calulate the indicated mean pressure with a p-v diagramm

hello Julian yes you can use polyarea, I believe you could also with trapz like in my example below (it uses this Fex submissi...

calulate the indicated mean pressure with a p-v diagramm

hello Julian yes you can use polyarea, I believe you could also with trapz like in my example below (it uses this Fex submissi...

4 months ago | 0

| accepted

Answered

I have a function that adds a legend I want to make the legend group certain plots together yet so that instead of a legend with 14 entries there is a legend with 5 entries

this is a simple solution, where the files are processed in the order that you wished (cf list = [1 3 5 2 4 6 7 9 11 8 10 12 13 ...

I have a function that adds a legend I want to make the legend group certain plots together yet so that instead of a legend with 14 entries there is a legend with 5 entries

this is a simple solution, where the files are processed in the order that you wished (cf list = [1 3 5 2 4 6 7 9 11 8 10 12 13 ...

4 months ago | 0

Answered

Obtain Transfer Function for Bode Plot data from PLECS Software

hello If you have the signal processing toolbox, you can use invfreqs or invfreqz to identify a transfer function here I use...

Obtain Transfer Function for Bode Plot data from PLECS Software

hello If you have the signal processing toolbox, you can use invfreqs or invfreqz to identify a transfer function here I use...

4 months ago | 0

Answered

Phase retrieval of a periodic signal, not working well

here a better solution without the need for fft you should not use the first peak in your code , as it does not correspond to ...

Phase retrieval of a periodic signal, not working well

here a better solution without the need for fft you should not use the first peak in your code , as it does not correspond to ...

5 months ago | 0

| accepted

Answered

StartPoint on Curve Fitting Toolbox

hello here a very simple code with a 2 steps approach - a relatively accurate initial guess of Aand Q, then refined with fmin...

StartPoint on Curve Fitting Toolbox

hello here a very simple code with a 2 steps approach - a relatively accurate initial guess of Aand Q, then refined with fmin...

5 months ago | 1

| accepted

Answered

FFT plotting trouble: Concatenated inputs

hello when you do modal analysis / FRF measurements with a hammer , you should split the record into individual hit input and ...

FFT plotting trouble: Concatenated inputs

hello when you do modal analysis / FRF measurements with a hammer , you should split the record into individual hit input and ...

5 months ago | 0

| accepted

Answered

interpolation of a sinusoidal tunnel data

hello again so I looked a bit some of your data , and my first question would be , why not first plot your (scattered) data wit...

interpolation of a sinusoidal tunnel data

hello again so I looked a bit some of your data , and my first question would be , why not first plot your (scattered) data wit...

5 months ago | 0

Answered

Frequency response of a system operating at a fixed frequency

hello we could use the general fft approach , but you could also use the stepped sine identification method. We only need to g...

Frequency response of a system operating at a fixed frequency

hello we could use the general fft approach , but you could also use the stepped sine identification method. We only need to g...

5 months ago | 1

| accepted

Answered

create a 3D smoothing with csaps (or similar)

hello again ! as your post title is about smoothing, this is what I propose , based on the fex submission : smoothn - File E...

create a 3D smoothing with csaps (or similar)

hello again ! as your post title is about smoothing, this is what I propose , based on the fex submission : smoothn - File E...

5 months ago | 0

| accepted

Answered

3D plot matrices

hello maybe this ? M100 = [19.8 29.305 38.425 48.37; 4.9 7.4 10.0 13.65]; M300 = [19.35 31.25 40.05 50.55; 7.6 12.65 16.65 ...

3D plot matrices

hello maybe this ? M100 = [19.8 29.305 38.425 48.37; 4.9 7.4 10.0 13.65]; M300 = [19.35 31.25 40.05 50.55; 7.6 12.65 16.65 ...

5 months ago | 0

| accepted

Answered

Calculating Surface Curvature from Image Data

hello I think this is because your K array contains some high amplitude spikes that avoid you see the smaller amplitude signal...

Calculating Surface Curvature from Image Data

hello I think this is because your K array contains some high amplitude spikes that avoid you see the smaller amplitude signal...

5 months ago | 1

| accepted

Answered

How to Generate Smooth Transitional Trapezoidal Signal in Simulink

hello whatever code you use to create the trapezoidal wave , you can simply then smooth it out, for example with smoothdata t...

How to Generate Smooth Transitional Trapezoidal Signal in Simulink

hello whatever code you use to create the trapezoidal wave , you can simply then smooth it out, for example with smoothdata t...

5 months ago | 1

| accepted

Answered

Pulstran function to generate biphasic pulses

hello have to admit I almost never used pulstran yet , so I simply prefer to come back to a very simple solution with repmat i...

Pulstran function to generate biphasic pulses

hello have to admit I almost never used pulstran yet , so I simply prefer to come back to a very simple solution with repmat i...

5 months ago | 0

Answered

How to plot isosurfaces using 3 vector columns of data?

maybe this ? pretty much what you could obtain with contour (in principe ,but I am not sure how to make contour work on your d...

How to plot isosurfaces using 3 vector columns of data?

maybe this ? pretty much what you could obtain with contour (in principe ,but I am not sure how to make contour work on your d...

5 months ago | 1

| accepted

Answered

Complex value computed by model function, fitting cannot continue. Try using or tightening upper and lower bounds on coefficients.

hello a very basic code using only fminsearch (no toolbox required ) I preferred to smooth a bit your data (otherwise it loo...

Complex value computed by model function, fitting cannot continue. Try using or tightening upper and lower bounds on coefficients.

hello a very basic code using only fminsearch (no toolbox required ) I preferred to smooth a bit your data (otherwise it loo...

5 months ago | 0

Answered

create a 3D average curve from two 3D curves

hello Alberto and welcome back we need to sort and remove duplictes in your data before creating a common z vector, then inter...

create a 3D average curve from two 3D curves

hello Alberto and welcome back we need to sort and remove duplictes in your data before creating a common z vector, then inter...

5 months ago | 0

| accepted

Answered

Workspace sorting order of new desktop

hello maybe a stupid idea but , if that solves the problem until you find a better solution, why not ? I first thought that ...

Workspace sorting order of new desktop

hello maybe a stupid idea but , if that solves the problem until you find a better solution, why not ? I first thought that ...

5 months ago | 0

Answered

How do I stitch these data and get a final plot

hello maybe this ? clear all S=readmatrix ('Probe.txt'); T=S(:,[2,3]); i=0; for j=0:60:300 R=[cos(j) -s...

How do I stitch these data and get a final plot

hello maybe this ? clear all S=readmatrix ('Probe.txt'); T=S(:,[2,3]); i=0; for j=0:60:300 R=[cos(j) -s...

5 months ago | 0

Answered

How to use the attached excel file below to do a Fourier conversion and display the spectrogram?

hello you can use my "do it all" demo file below your signal has been detrended and downsampled . But I wonder what you can ...

How to use the attached excel file below to do a Fourier conversion and display the spectrogram?

hello you can use my "do it all" demo file below your signal has been detrended and downsampled . But I wonder what you can ...

5 months ago | 1

| accepted

Answered

Converting acceleration data to displacement data using FFT results in Zero-drift

FYI, a very simple time domain approach - assuming we don't care about the DC values , only the dynamic portion of the data is o...

Converting acceleration data to displacement data using FFT results in Zero-drift

FYI, a very simple time domain approach - assuming we don't care about the DC values , only the dynamic portion of the data is o...

5 months ago | 1

Answered

I Just Want To Read Text From URL And Save It As Txt.... But How?

hello try this textweb = webread("https://kp.gfz-potsdam.de/kpdata?startdate=2024-05-21&enddate=2024-05-26&format=kp1#kpdata...

I Just Want To Read Text From URL And Save It As Txt.... But How?

hello try this textweb = webread("https://kp.gfz-potsdam.de/kpdata?startdate=2024-05-21&enddate=2024-05-26&format=kp1#kpdata...

5 months ago | 2

| accepted

Answered

To plot one stem with multiple values for data of different months.

hello @Amjad Iqbal I modified a bit your code added one line in the first for loop number_of_data_thismonth(k) = numel(...

To plot one stem with multiple values for data of different months.

hello @Amjad Iqbal I modified a bit your code added one line in the first for loop number_of_data_thismonth(k) = numel(...

6 months ago | 0

Answered

Find specific points of increase within multiple different data sets

hello try this... hope it helps - though I did not draw vertical lines but you have to start and ending points coordinates. I...

Find specific points of increase within multiple different data sets

hello try this... hope it helps - though I did not draw vertical lines but you have to start and ending points coordinates. I...

6 months ago | 0

| accepted

Answered

Need help for Influence line plotting

hello I believe there is no mistake in the code simply you have a fairly crude spatial resolution (fixed to 0.5 m in the cod...

Need help for Influence line plotting

hello I believe there is no mistake in the code simply you have a fairly crude spatial resolution (fixed to 0.5 m in the cod...

6 months ago | 0

| accepted