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How to compare data series?
@Jake, It is hard to say without having the actual data. If you restrict your analysis to one variable at a time, then you may...

7 months 前 | 1

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cross correlation between two time series data
@Sandipan, I looked at the plots you provided. You say "Their temporal variation shows a mixed pattern of correlation and anti...

7 months 前 | 1

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How to mark step changes of various sizes
@Justin, You may want to differentiate your signal with diff(), and then use findpeaks(). Differentiation amplifies high frequ...

7 months 前 | 0

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Platform velocity different than 0 in ECEF coordinates
@Carlos, %% Satellite scenario parameters mission.StartDate = datetime(2023,10,9,7,10,0,TimeZone="America/New_York"); mission...

7 months 前 | 0

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spectrum(x, log="no",span=5, plot=FALSE) similar command in Matlab.
@Zakia Hossain, The curve fiutting toolbox in Matlab includes the function smooth(). By default, smooth applies a moving averag...

7 months 前 | 0

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Problem with 3D Meshgrid - Not understanding why some planes are 0 which results in my dx becoming 0
@Elias Larsson, For clarity, consider an example in which dx,dy,dz differ, and in which the number of elements differ for each ...

7 months 前 | 1

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how to plot contour for arbitrary shape (not rectangular) in matlab?
@sajad sajad, You can make a MxN grid of points that cover the X-Y extent of your shape, and define the Z values at those poi...

7 months 前 | 0

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How to extract data from a MATLAB figure containing multiple line plots and save it in a file?
@Shreeja, See here.

7 months 前 | 0

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Principal axis + phase and inclination.
@Claudio Iturra, I assume you want to do a best-fit ellipse to the wind data. Here is a link to my notes on how to find the bes...

7 months 前 | 0

提问

copy subplots within same figure
I am copying subplots within a figure, to show the same data with an expaned time base. As you can see from the example below...

7 months 前 | 2 个回答 | 0

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提问

plot legend shows wrong linespec
Starting with no open figures, and some data already computed, I made a plot as follows: load('data') % I did not use this com...

7 months 前 | 2 个回答 | 0

2

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I want to optimize an ODE system of equations with constraints
@naiva saeedia, You stated goals such as Mass_C4_G-0.2985<0.1 I assume you really would like abs(Mass_C4_G-0.2985)<0. and ...

7 months 前 | 0

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Decrease Pattern antenna at certain azimuth.
[I will delete my comment, which I meant to be answer.] @Amer tawel, You cannot minimize the intensity in one direction witho...

8 months 前 | 0

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Passing audio file through a notch filter transfer function
@Nathaniel, [edit: remove junk text at the end] lsim() wants the input to be the time domain signal. You are passing the frequ...

8 months 前 | 0

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MATLAB code of intersection
@Liza L, what have you tried so far? The first part of your question, drawing the straight lines, shouldn't be too hard. Draw a...

8 months 前 | 0

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Global min optimisation for aorta 3-element windkessel model
@Hussam, Use fmincon(). I have used it to optimize a model of the circulation with up to 9 parameters, in order to match presu...

8 months 前 | 0

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Geoshow and grid points with polygonal shape
@Daniele, I recommend using meshgrid() to make the 2D mesh that covers and extends beyond the plygon of interest, the use resha...

8 months 前 | 0

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Traslate in matlab equations of rotational displacement
@Ilary, The equations you have given are for a rigid body. If you are comfortable regarding the earth as a rigid body within a...

8 months 前 | 1

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Fill area between two lines
@Amélia, Since we do not have your data (xxO, envelopeminO, envelopesupO), I have made up some values to use for the example be...

9 months 前 | 0

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Convert pixel/grayscale values to decibels
@ESTER LIMA, given two levels, PVmin and PVmax, whose values are proportional to the intensity of the ultrasound signal, the dec...

9 months 前 | 0

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Enhancing Embolic Signal Visualization in Transcranial Doppler Graphs
@Patrícia, Please upload data files that go with the two screenshot images which show possible emboli. Adjust the color scale...

9 months 前 | 1

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I need to call up a vertex from polyshape command
@Bruce Griffin If you have a polygon pgon, of unknown size, get the number of vertices: pgon=polyshape(cosd(0:40:320),sind(0:4...

9 months 前 | 0

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HEART RATE from heart sound
@Monday David, If you attach the MP3 file, others can run your code. You will have to zip it first. [Edit: The sounds which ar...

9 months 前 | 0

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How can I Plot eigenvectors of a graph on the graph as bars coming out of vertices?
@Defne Odabasi, You can plot arrows representing a 2D eigenvectors, at specific locations, with quiver(X,Y,U,V), where X and Y ...

9 months 前 | 2

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Determining the input from the output using IFFT
@Ganesh Prasad, Here is a script that does the deconvolution in the frequency domain, using the ideas in my comment above. It a...

9 months 前 | 0

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已回答
Having trouble with lsqcurvefit for a heat transfer experiment.
@Nate, The plot below shows the measured data (red *), and the predicted temperature profile with h=150, 2000, and -4000. It s...

9 months 前 | 0

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Method used by fitnlm to estimate coefficients
@Alex, By default, fitnlm() minimizes the sum squared error. It uses the Levenberg-Marquardt algorithm to find its way downhil...

9 months 前 | 0

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implicit numerical method: 1-D unsteady state heat transfer using finite difference method
@Joydeep Bagchi, I think you need to divide the long term (u(i+1,n)-2*u(i,n)+...) by 2, on the right side of your Crank-Nicolso...

9 months 前 | 0

已回答
Interpolating data to get values at specific depth
@Luís Henrique Bordin, x=(0:10); y=(0:11)'; z=[1.0, 2.3, 5.6, 8.3]; % vectors x,y,z [X,Y]=meshgrid(x,y); %Make data() with de...

9 months 前 | 1

已回答
How to find out the amplitude and duration of a sine wave of different amplitudes?
@A Lumbini, If you must use wavelets, do a continuous wavelet transform (cwt). THe Matlab documentation is good. Make a 50 Hz s...

9 months 前 | 0