Answered

Images don't show properly with imshow after certain calculation

When you do things like this the errors are always (in my experience) in different normalizations and type-castings. To work the...

Images don't show properly with imshow after certain calculation

When you do things like this the errors are always (in my experience) in different normalizations and type-castings. To work the...

4 mois ago | 0

| accepted

Answered

Press " " to rename 4 instances of "VariableName1" to "VariableName2"

That ought to be the return key... HTH

Press " " to rename 4 instances of "VariableName1" to "VariableName2"

That ought to be the return key... HTH

4 mois ago | 0

Answered

How to compute SVD of a matrix without using in-build SVD command?

So this is a homework task, right? (Unless you come up with a good reason this is the case everyone have to come to this conclus...

How to compute SVD of a matrix without using in-build SVD command?

So this is a homework task, right? (Unless you come up with a good reason this is the case everyone have to come to this conclus...

4 mois ago | 0

Answered

analytical solution of ODEs

This should be done thisly: syms r syms T(r) dTdr = diff(T) d2Tdr2 = diff(T,2) T = dsolve(1*d2T+((1/r)*dT) ==1,T(0.005)==20...

analytical solution of ODEs

This should be done thisly: syms r syms T(r) dTdr = diff(T) d2Tdr2 = diff(T,2) T = dsolve(1*d2T+((1/r)*dT) ==1,T(0.005)==20...

4 mois ago | 0

Answered

How to graphically/interactively select region of interest from 3D point cloud data

In newer versions of matlab there seems to be just such a feature, see: ROI.CUBOID For older versions of matlab (I vaguely rec...

How to graphically/interactively select region of interest from 3D point cloud data

In newer versions of matlab there seems to be just such a feature, see: ROI.CUBOID For older versions of matlab (I vaguely rec...

4 mois ago | 0

| accepted

Answered

Obtaining a equation in two variables (x and y) from a set of data points

What you should do depends on your objective. If you very explicitly want a function you could use spap2 (and perhaps some of it...

Obtaining a equation in two variables (x and y) from a set of data points

What you should do depends on your objective. If you very explicitly want a function you could use spap2 (and perhaps some of it...

4 mois ago | 1

| accepted

Answered

Hello, we have received a Matlab code in school and the assignment is to explain what it means. I wonder if anybody could take us through the code and explain it?

At the matlab command-line prompt type: dpstop in nameiofscript where nameiofscript is the name of the script-file. Then you r...

Hello, we have received a Matlab code in school and the assignment is to explain what it means. I wonder if anybody could take us through the code and explain it?

At the matlab command-line prompt type: dpstop in nameiofscript where nameiofscript is the name of the script-file. Then you r...

5 mois ago | 0

Answered

How to obtain CDF from large dataset?

Have a look at the help and documentation of the function ksdensity - that is one way to do this with the least amount of assump...

How to obtain CDF from large dataset?

Have a look at the help and documentation of the function ksdensity - that is one way to do this with the least amount of assump...

5 mois ago | 0

Answered

Difference in frequency domain between mp3 and wav

There are some small differences. You should also try to compare the spectrograms of the two signals, see the help for spectrogr...

Difference in frequency domain between mp3 and wav

There are some small differences. You should also try to compare the spectrograms of the two signals, see the help for spectrogr...

5 mois ago | 0

Answered

How to edit matlab saved file?

I think something like this should work: filename2edit = 'something.mat'; load(filename2edit,'X2change') X2change(3) = 12; s...

How to edit matlab saved file?

I think something like this should work: filename2edit = 'something.mat'; load(filename2edit,'X2change') X2change(3) = 12; s...

5 mois ago | 0

Answered

I would like to plot Histogram and relative frequencies from a given dada.txt. I already plot time series plot for the given data. KIndly help me to plot histogram and relative freqs.

Have a good look at the help and documentation of histogram function. It should let you solve this task easily. HTH

I would like to plot Histogram and relative frequencies from a given dada.txt. I already plot time series plot for the given data. KIndly help me to plot histogram and relative freqs.

Have a good look at the help and documentation of histogram function. It should let you solve this task easily. HTH

5 mois ago | 0

Answered

Solving 4th order ode problem

In general you convert a high-order ODE to a set of first order ODEs like in this example below (I will use a simple equation of...

Solving 4th order ode problem

In general you convert a high-order ODE to a set of first order ODEs like in this example below (I will use a simple equation of...

5 mois ago | 0

Answered

partial differentating a matrix by a vector

Have a look at the help and documentation for jacobian. HTH

partial differentating a matrix by a vector

Have a look at the help and documentation for jacobian. HTH

5 mois ago | 0

| accepted

Answered

Is it possible to plot a 3D graph with non numerical values?

The simplest method might be to map your classes to some integer range and then use the standard plotting functions. In your cas...

Is it possible to plot a 3D graph with non numerical values?

The simplest method might be to map your classes to some integer range and then use the standard plotting functions. In your cas...

5 mois ago | 0

Answered

How to display figure in full-screen mode programmatically and save as a high resolution image?

To save as high-resolution, I regularly use: print('-depsc2','-painters','J.eps') If you desperately want the image as a png-i...

How to display figure in full-screen mode programmatically and save as a high resolution image?

To save as high-resolution, I regularly use: print('-depsc2','-painters','J.eps') If you desperately want the image as a png-i...

5 mois ago | 1

Answered

How to store 2D variables in matrix

For the storing the point coordinates you might look at either cell-arrays: r1 = [1,2,3]; r2 = [3,2,5]; r3 = [4.5,pi,1,5]; %...

How to store 2D variables in matrix

For the storing the point coordinates you might look at either cell-arrays: r1 = [1,2,3]; r2 = [3,2,5]; r3 = [4.5,pi,1,5]; %...

5 mois ago | 0

Answered

Problem getting number of ticks and labels to work properly

Do you get your xticks at the even years with the xticklabels for the first 6 years? You can at least check the x-tick values w...

Problem getting number of ticks and labels to work properly

Do you get your xticks at the even years with the xticklabels for the first 6 years? You can at least check the x-tick values w...

5 mois ago | 0

Answered

De-resolution of Dicom Image

So you problem is that you cannot figure out how to save a file to a new same-name file in another directory? If so something l...

De-resolution of Dicom Image

So you problem is that you cannot figure out how to save a file to a new same-name file in another directory? If so something l...

5 mois ago | 0

Answered

A switch case statement that will help me to either run codeS in Windows or linux, based on whichever OS it is

Have a look at the commands: computer, ispc, insunix, ismac. HTH

A switch case statement that will help me to either run codeS in Windows or linux, based on whichever OS it is

Have a look at the commands: computer, ispc, insunix, ismac. HTH

5 mois ago | 0

Answered

zoom plot into plot

Maybe this file exchange contribution does what you need: zoomplot Or any of these: on-figure-magnifier, maginset, interactiv...

zoom plot into plot

Maybe this file exchange contribution does what you need: zoomplot Or any of these: on-figure-magnifier, maginset, interactiv...

5 mois ago | 0

Answered

How to find angle between two lines?

A more stable method that what Jos suggested is v_1 = [x2,y2,0] - [x1,y1,0]; v_2 = [x3,y3,0] - [x1,y1,0]; Theta = atan2(norm(...

How to find angle between two lines?

A more stable method that what Jos suggested is v_1 = [x2,y2,0] - [x1,y1,0]; v_2 = [x3,y3,0] - [x1,y1,0]; Theta = atan2(norm(...

5 mois ago | 1

| accepted

Answered

Integrating function of t over numerical values

Yes, that means that the function you call integral with is called with an array of values - therefore your function (the long e...

Integrating function of t over numerical values

Yes, that means that the function you call integral with is called with an array of values - therefore your function (the long e...

5 mois ago | 0

| accepted

Answered

Multiple color plots / colorbars on a single axes

There are some contributions on the file exchange that deals with this. I thik this is one: colormat-and-colorbar-utilities You...

Multiple color plots / colorbars on a single axes

There are some contributions on the file exchange that deals with this. I thik this is one: colormat-and-colorbar-utilities You...

5 mois ago | 0

| accepted

Answered

Given 2 red beads, 2 blue beads, 1 yellow bead, and 1 green bead, how many different necklaces can be made?

Why not just remove the non-unique necklaces? See the help and documentation for unique for how to do this. HTH

Given 2 red beads, 2 blue beads, 1 yellow bead, and 1 green bead, how many different necklaces can be made?

Why not just remove the non-unique necklaces? See the help and documentation for unique for how to do this. HTH

5 mois ago | 0

Answered

stream lines for discrete data set of velocities

Your question is a bit too vague. Or rather, the input-data you have is a bit vaguely described. The answer depends on how you'l...

stream lines for discrete data set of velocities

Your question is a bit too vague. Or rather, the input-data you have is a bit vaguely described. The answer depends on how you'l...

5 mois ago | 0

| accepted

Answered

Is there a way to Un-clip a sine wave?

You can do something like this: sfcn = @(t,pars) pars(1)+pars(2)*sin(pars(3)*t+pars(end)); % sine-like function with offset and...

Is there a way to Un-clip a sine wave?

You can do something like this: sfcn = @(t,pars) pars(1)+pars(2)*sin(pars(3)*t+pars(end)); % sine-like function with offset and...

5 mois ago | 0

| accepted

Answered

Plotting graph with variables on x axis

Something like this: y = randn(123,1); x = linspace(0,1,123); plot(x,y) xtstr = {'0','0.2d','0.4d','0.6d','0.8d','1d'}; set...

Plotting graph with variables on x axis

Something like this: y = randn(123,1); x = linspace(0,1,123); plot(x,y) xtstr = {'0','0.2d','0.4d','0.6d','0.8d','1d'}; set...

5 mois ago | 0

| accepted

Answered

Dynamic model of a bending spring

Start reading up on the topic of beam-theory. Then come back with matlab or ODE/PDE-based questions which are more suitable for ...

Dynamic model of a bending spring

Start reading up on the topic of beam-theory. Then come back with matlab or ODE/PDE-based questions which are more suitable for ...

5 mois ago | 0

Answered

How to assign to an already 3d surface a colormap based on a set of values ?

This is how I'd do this: surf(x,y,z,Temps),shading flat This you dont have to view from above. HTH

How to assign to an already 3d surface a colormap based on a set of values ?

This is how I'd do this: surf(x,y,z,Temps),shading flat This you dont have to view from above. HTH

5 mois ago | 0