Answered

How to plot sphere in sphere coordinates?

Your problem is not with conversion or plotting, but defining the coordinates that you want... [phi,theta] = meshgrid(linspace(...

How to plot sphere in sphere coordinates?

Your problem is not with conversion or plotting, but defining the coordinates that you want... [phi,theta] = meshgrid(linspace(...

alrededor de 17 horas ago | 0

Answered

fit curve with parameter

If i understand Rik correctly, I think you'd first have to estimate the t data by computing the cumulative arc length between yo...

fit curve with parameter

If i understand Rik correctly, I think you'd first have to estimate the t data by computing the cumulative arc length between yo...

alrededor de 17 horas ago | 0

| accepted

Answered

how to "convert" user inputted letter and number combination to a row,col position on a plot?

In case you want to make battlship on an insanely large grid, here's a more general solution to convert "Excel column" style lab...

how to "convert" user inputted letter and number combination to a row,col position on a plot?

In case you want to make battlship on an insanely large grid, here's a more general solution to convert "Excel column" style lab...

3 días ago | 0

Answered

Plotting into Multiple Axes in GUI

Any plot command can accept as a first argument a target axes object to plot into.

Plotting into Multiple Axes in GUI

Any plot command can accept as a first argument a target axes object to plot into.

3 días ago | 0

Answered

How do I pass a variable number of outputs through two functions?

Currently your GetData function literally has no purpose other than to alias the function you want with other names...the mechan...

How do I pass a variable number of outputs through two functions?

Currently your GetData function literally has no purpose other than to alias the function you want with other names...the mechan...

5 días ago | 0

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Answered

minify Matlab code (minimize number of characters)

Partial answer to implement Rik's original stripping of blank lines and full comment lines, and also attempt to squeeze the line...

minify Matlab code (minimize number of characters)

Partial answer to implement Rik's original stripping of blank lines and full comment lines, and also attempt to squeeze the line...

8 días ago | 1

Answered

Animating a pointmass sliding down a plane

There's some inconsistency in whether you are treating the angle from vertical or horizontal (effectively). It may also be conce...

Animating a pointmass sliding down a plane

There's some inconsistency in whether you are treating the angle from vertical or horizontal (effectively). It may also be conce...

8 días ago | 0

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Answered

How to solve system of nonlinear ODEs with "unusual" boundary conditions?

If you are talking about boundary value problems versus initial value problems, look at bvp4c and bvp5c. There is nothing "unusu...

How to solve system of nonlinear ODEs with "unusual" boundary conditions?

If you are talking about boundary value problems versus initial value problems, look at bvp4c and bvp5c. There is nothing "unusu...

9 días ago | 0

Answered

Euler's Method/Improved Euler's Method

The error is telling you that at the first step of your loop (n=1), you are trying to access the n=2nd element of t and y, but a...

Euler's Method/Improved Euler's Method

The error is telling you that at the first step of your loop (n=1), you are trying to access the n=2nd element of t and y, but a...

11 días ago | 0

Answered

set uiaxes in matlab function as current figure to plot on

I would argue that it makes more sense (more elegant) to require specifying the parent axes to plot. The way that you want may c...

set uiaxes in matlab function as current figure to plot on

I would argue that it makes more sense (more elegant) to require specifying the parent axes to plot. The way that you want may c...

12 días ago | 0

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Answered

How to solve unknown coefficients for an exponential fit equation iteratively?

MattJ's answer takes y0 to be known, which Yi Jiao clarified is not the case. Treating y0 unknown and extending MattJ's answer l...

How to solve unknown coefficients for an exponential fit equation iteratively?

MattJ's answer takes y0 to be known, which Yi Jiao clarified is not the case. Treating y0 unknown and extending MattJ's answer l...

13 días ago | 0

Answered

Is there a simpler or more efficient way to do the following?

You could for example do this function B = label1(A) [rows,cols] = size(A); B = ["",string(1:cols);[string((1:rows)')+char(9)...

Is there a simpler or more efficient way to do the following?

You could for example do this function B = label1(A) [rows,cols] = size(A); B = ["",string(1:cols);[string((1:rows)')+char(9)...

14 días ago | 0

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Answered

How to filter a structure based on part of nested field names

It's not 100% clear where you are stuck, but it sounds like knowing about "fieldnames()" will help. For data structure design, ...

How to filter a structure based on part of nested field names

It's not 100% clear where you are stuck, but it sounds like knowing about "fieldnames()" will help. For data structure design, ...

15 días ago | 1

Answered

Simulate image data representative of a real experiment

Bjorn's answer contains the conv2() route to blurring fK = exp(-X.^2/dx^2-Y.^2/dy^2); fK = fK/sum(fK(:)); Im = conv(full(dIm)...

Simulate image data representative of a real experiment

Bjorn's answer contains the conv2() route to blurring fK = exp(-X.^2/dx^2-Y.^2/dy^2); fK = fK/sum(fK(:)); Im = conv(full(dIm)...

17 días ago | 0

Answered

deconvolution of impedance spectra

the deconvolution operation is denoted "deconv" in base matlab. whether this is what you are looking for is unclear from your qu...

deconvolution of impedance spectra

the deconvolution operation is denoted "deconv" in base matlab. whether this is what you are looking for is unclear from your qu...

21 días ago | 0

Answered

Caclulate Horizonzal Area Between Two Curves And Minimize This Area (Optimization Problem)

Take a look at this: clc; close all; clear; % it looks like these are ultimately the curves you want to compare f1 = @(x)...

Caclulate Horizonzal Area Between Two Curves And Minimize This Area (Optimization Problem)

Take a look at this: clc; close all; clear; % it looks like these are ultimately the curves you want to compare f1 = @(x)...

24 días ago | 1

| accepted

Answered

Appropriate Weights in Exponential Fit

The choice of weighting is unrelated to the computing platform... If you want to use an inverse variance weighting strategy, to...

Appropriate Weights in Exponential Fit

The choice of weighting is unrelated to the computing platform... If you want to use an inverse variance weighting strategy, to...

25 días ago | 0

Answered

How to speed up the simulation time of a big system of ODEs?

don't use syms

How to speed up the simulation time of a big system of ODEs?

don't use syms

alrededor de 1 mes ago | 0

Answered

Indexing arrays of binned data

From what I can gather, it hsould be possible to reorganize your experimental data into a Nx6 matrix called Data, where N is the...

Indexing arrays of binned data

From what I can gather, it hsould be possible to reorganize your experimental data into a Nx6 matrix called Data, where N is the...

alrededor de 1 mes ago | 0

Answered

regression line in quadratic form

[edited] Alternatively, just create a new variable to hold an already sorted "model" experience N = 200; % choose an arbitrary ...

regression line in quadratic form

[edited] Alternatively, just create a new variable to hold an already sorted "model" experience N = 200; % choose an arbitrary ...

alrededor de 1 mes ago | 1

Answered

Reading large excel file using "read" command takes ~5 minutes, is this expected performance?

Try manually creating the import options with spreadsheetimportoptions().

Reading large excel file using "read" command takes ~5 minutes, is this expected performance?

Try manually creating the import options with spreadsheetimportoptions().

alrededor de 1 mes ago | 0

| accepted

Answered

How to use datetime as a condition in foor loop?

i believe you can, you just have coded it as a comparison of a datetime to a string. A(i,1) == datetime(2019,1,dd)

How to use datetime as a condition in foor loop?

i believe you can, you just have coded it as a comparison of a datetime to a string. A(i,1) == datetime(2019,1,dd)

alrededor de 1 mes ago | 0

Answered

How to fill the gaps in a patch plot through adaptive interpolation

If you reduce your current patches into single (x,y) coordinates, e.g., center of mass, then you can triangulate/find the vorono...

How to fill the gaps in a patch plot through adaptive interpolation

If you reduce your current patches into single (x,y) coordinates, e.g., center of mass, then you can triangulate/find the vorono...

alrededor de 2 meses ago | 0

Answered

How to fill the gaps in a patch plot through adaptive interpolation

You could add in "corners" where your red curves intersect the y-axes as new (x,y) coordinates, then do a convexhull on them. Th...

How to fill the gaps in a patch plot through adaptive interpolation

You could add in "corners" where your red curves intersect the y-axes as new (x,y) coordinates, then do a convexhull on them. Th...

alrededor de 2 meses ago | 0

Answered

Preallocation with object structures

I don't think you are understanding "preallocation" correctly based on your last example...matlab is [probably] asking you to "r...

Preallocation with object structures

I don't think you are understanding "preallocation" correctly based on your last example...matlab is [probably] asking you to "r...

alrededor de 2 meses ago | 1

| accepted

Answered

Creation of a mask on RGB image

Instead of multiplying pixels in the mask by a constant value, you can mulitply all pixels by an "image" of the saturation multi...

Creation of a mask on RGB image

Instead of multiplying pixels in the mask by a constant value, you can mulitply all pixels by an "image" of the saturation multi...

alrededor de 2 meses ago | 1

| accepted

Answered

Reading data with multiple headers

other experts on the forum for text parsing may have better ways, but you can scan through line by line and apply regular expres...

Reading data with multiple headers

other experts on the forum for text parsing may have better ways, but you can scan through line by line and apply regular expres...

alrededor de 2 meses ago | 0

Answered

How can I get points coordinate on an axes made in GUI?

It sounds like the click is being "intercepted" by the object that you drew on the axes (please don't use the word "figure", bec...

How can I get points coordinate on an axes made in GUI?

It sounds like the click is being "intercepted" by the object that you drew on the axes (please don't use the word "figure", bec...

alrededor de 2 meses ago | 0

Answered

Matlabでのバーチャルな写真の撮影について

ax.DataAspectRatio = [1,1,1] also ax.Projection = "perspective" and various other "camera"-related properties like: cameravie...

Matlabでのバーチャルな写真の撮影について

ax.DataAspectRatio = [1,1,1] also ax.Projection = "perspective" and various other "camera"-related properties like: cameravie...

alrededor de 2 meses ago | 0

| accepted

Answered

How an I manipulate top and bottom x axes individually?

Actually, dpb's suggestion of 2 axes should work as long as you don't turn "box on", and you may need to sync their positions if...

How an I manipulate top and bottom x axes individually?

Actually, dpb's suggestion of 2 axes should work as long as you don't turn "box on", and you may need to sync their positions if...

alrededor de 2 meses ago | 0

| accepted