Answered

Y-axis labels overlaps with figure when using a reversed x-axis

Ah, missed that. Nasty bug/feature. text(10,10.5e9,'x10^9') % place manually ?

Y-axis labels overlaps with figure when using a reversed x-axis

Ah, missed that. Nasty bug/feature. text(10,10.5e9,'x10^9') % place manually ?

4 years ago | 0

Answered

Y-axis labels overlaps with figure when using a reversed x-axis

Yes, it seems to only happen when there is an exponent in the y-axis. And even then the exponent must have double figures. Also ...

Y-axis labels overlaps with figure when using a reversed x-axis

Yes, it seems to only happen when there is an exponent in the y-axis. And even then the exponent must have double figures. Also ...

4 years ago | 0

Answered

solving a very complicated equation implicitly

OK, try this: My approach was to embed an integral inside a root solver. I basically used your code and coefficients, but chan...

solving a very complicated equation implicitly

OK, try this: My approach was to embed an integral inside a root solver. I basically used your code and coefficients, but chan...

4 years ago | 1

Answered

How can I find the coefficients of a second order ODE using data points?

You will also need to have collected x(t) at each sample point.

How can I find the coefficients of a second order ODE using data points?

You will also need to have collected x(t) at each sample point.

4 years ago | 0

Answered

to find the root of quantum transcendental equation

Well you have given us quite a puzzler; little background info and no context. I'm assuming you are looking for the value Ee s...

to find the root of quantum transcendental equation

Well you have given us quite a puzzler; little background info and no context. I'm assuming you are looking for the value Ee s...

4 years ago | 0

Answered

How to get a kernel density plot

You also can use ksdensity from the Stats toolbox. But you have supplied us with a matrix with 25 columns! Which column were you...

How to get a kernel density plot

You also can use ksdensity from the Stats toolbox. But you have supplied us with a matrix with 25 columns! Which column were you...

4 years ago | 0

| accepted

Answered

Coefficents not reflecting the curve obtained using fit function

I suspect that the problem is that you have normalised the data, and then forgot that when you looked at the parameter values. ...

Coefficents not reflecting the curve obtained using fit function

I suspect that the problem is that you have normalised the data, and then forgot that when you looked at the parameter values. ...

4 years ago | 0

| accepted

Answered

geoaxes, geoscatter does not work

Correct, you'll need to upgrade to use this functionality. (I think the mapping toolbox does replicate this to some degree tho...

geoaxes, geoscatter does not work

Correct, you'll need to upgrade to use this functionality. (I think the mapping toolbox does replicate this to some degree tho...

4 years ago | 0

Answered

Error using load Out of memory. Type HELP MEMORY for your options.

Did you do as suggested and actually check your memory? >> memory Maximum possible array: 2745 MB (2.878e+09 bytes) *...

Error using load Out of memory. Type HELP MEMORY for your options.

Did you do as suggested and actually check your memory? >> memory Maximum possible array: 2745 MB (2.878e+09 bytes) *...

4 years ago | 0

| accepted

Answered

USing BVP solver to solve 2-D Laplace’s equation?

If you mean bvp4c, then no it is not suitable since it solves boundary value ODEs in 1D, not PDEs in 2D. To solve Laplace's eqn ...

USing BVP solver to solve 2-D Laplace’s equation?

If you mean bvp4c, then no it is not suitable since it solves boundary value ODEs in 1D, not PDEs in 2D. To solve Laplace's eqn ...

4 years ago | 0

Answered

please help me to fix error and rectify it to a correct programme

In general, it's better to use column vectors by default. That way you don't make mistakes like above when concatenating. gamm...

please help me to fix error and rectify it to a correct programme

In general, it's better to use column vectors by default. That way you don't make mistakes like above when concatenating. gamm...

4 years ago | 0

Answered

geoaxes, geoscatter does not work

The function geoaxes was introduced in 2018b. What is your version? Type >> ver.

geoaxes, geoscatter does not work

The function geoaxes was introduced in 2018b. What is your version? Type >> ver.

4 years ago | 0

Answered

I would like to plot periodogram for my voice file how to do that?

You read in an audio file and set it to the variable y with sampling frequency fs, and then you immediately clobber it with a no...

I would like to plot periodogram for my voice file how to do that?

You read in an audio file and set it to the variable y with sampling frequency fs, and then you immediately clobber it with a no...

4 years ago | 0

Answered

Nonlinear Optimization problem in Matlab

Are you confusing x0, the start guess with x(0), which does not exist. In your constraint, you write x(0). If that is really wha...

Nonlinear Optimization problem in Matlab

Are you confusing x0, the start guess with x(0), which does not exist. In your constraint, you write x(0). If that is really wha...

4 years ago | 0

| accepted

Answered

Use the Matlab function EXPM()

I'll get you going on part (b): syms t positive A = sym([0,-5;1,-2]); Phi = expm(A*t)

Use the Matlab function EXPM()

I'll get you going on part (b): syms t positive A = sym([0,-5;1,-2]); Phi = expm(A*t)

4 years ago | 1

Answered

geoaxes, geoscatter does not work

Try the which function. This will tell you if the function exists on your path. >> which geoshow C:\Program Files\MATLAB\R201...

geoaxes, geoscatter does not work

Try the which function. This will tell you if the function exists on your path. >> which geoshow C:\Program Files\MATLAB\R201...

4 years ago | 1

Answered

Replace extreme outliers in dataset

Not difficult to hack, but slightly more complex to hack correctly. Just copy (and rename) the function into your work directory...

Replace extreme outliers in dataset

Not difficult to hack, but slightly more complex to hack correctly. Just copy (and rename) the function into your work directory...

4 years ago | 0

Answered

intlinprog no feasible solution

Are you sure you are implementing your either/or constraints properly? For example where is your "big M"? (see p6 of https://w...

intlinprog no feasible solution

Are you sure you are implementing your either/or constraints properly? For example where is your "big M"? (see p6 of https://w...

4 years ago | 0

Answered

Replace extreme outliers in dataset

Have you considered hacking the source of filloutliers.m? If it is only a matter of scaling, then it is probably a simple one li...

Replace extreme outliers in dataset

Have you considered hacking the source of filloutliers.m? If it is only a matter of scaling, then it is probably a simple one li...

4 years ago | 0

Answered

Method to Correlate Time Series Arrays of Differing Lengths

OK, I'll generate some fake data that is not aligned, and the do the above approach. %% Generate some data series that are sli...

Method to Correlate Time Series Arrays of Differing Lengths

OK, I'll generate some fake data that is not aligned, and the do the above approach. %% Generate some data series that are sli...

4 years ago | 1

Answered

Method to Correlate Time Series Arrays of Differing Lengths

One idea would be to: Start by finding a common time span in in all your data. Find the latest start time and the earliest fini...

Method to Correlate Time Series Arrays of Differing Lengths

One idea would be to: Start by finding a common time span in in all your data. Find the latest start time and the earliest fini...

4 years ago | 0

| accepted

Answered

Finding the traffic intensity, A in Erlang B

OK, perhaps there is no guarentee that the symbolic returns the real solution last, so in that case you need to resort to a nume...

Finding the traffic intensity, A in Erlang B

OK, perhaps there is no guarentee that the symbolic returns the real solution last, so in that case you need to resort to a nume...

4 years ago | 1

Answered

Plotting the graph for THERMAL RECOVERY

Plot it, and you'll quickly see where the root is: f = @(tcd) exp(tcd).*erfc(sqrt(tcd))-0.909; tcd = linspace(0,0.02); plot...

Plotting the graph for THERMAL RECOVERY

Plot it, and you'll quickly see where the root is: f = @(tcd) exp(tcd).*erfc(sqrt(tcd))-0.909; tcd = linspace(0,0.02); plot...

4 years ago | 0

Answered

3D look up interp3

In that case it's easy, just use them as the interpolated input: say zt x=0.5, y=0.7,z=-0.3 Vi = interp3(X,Y,Z,V, ... ...

3D look up interp3

In that case it's easy, just use them as the interpolated input: say zt x=0.5, y=0.7,z=-0.3 Vi = interp3(X,Y,Z,V, ... ...

4 years ago | 0

Answered

Simulation of PID without simulink

It's unusual to just simulate a PID controller, and yes the D-part typically makes it non-proper. Without adding a fast denomina...

Simulation of PID without simulink

It's unusual to just simulate a PID controller, and yes the D-part typically makes it non-proper. Without adding a fast denomina...

4 years ago | 0

| accepted

Answered

3D look up interp3

You don't give us much to work on, so I'll make up some data that follow your dimensions. x = linspace(-1,1,16); y =linspace(-1...

3D look up interp3

You don't give us much to work on, so I'll make up some data that follow your dimensions. x = linspace(-1,1,16); y =linspace(-1...

4 years ago | 0

Answered

Finding the traffic intensity, A in Erlang B

OK, that's some nasty equation you've got there. But the symbolic toolbox did find some solutions, in fact it found many (& comp...

Finding the traffic intensity, A in Erlang B

OK, that's some nasty equation you've got there. But the symbolic toolbox did find some solutions, in fact it found many (& comp...

4 years ago | 1

| accepted

Answered

Vibration Analysis of a gas turbine

Here's a version. You haven't said what the signal is, so I've made one up. It has two dominant frequencies, one above your cut-...

Vibration Analysis of a gas turbine

Here's a version. You haven't said what the signal is, so I've made one up. It has two dominant frequencies, one above your cut-...

4 years ago | 0

Answered

log bolting in y and x cordinates

You have a pretty ugly equation there, and you haven't made it easy for yourself by writing the thing un-vectorised in one long ...

log bolting in y and x cordinates

You have a pretty ugly equation there, and you haven't made it easy for yourself by writing the thing un-vectorised in one long ...

4 years ago | 0

Answered

how to take psd

If you want, the noise term will simply smudge the results.

how to take psd

If you want, the noise term will simply smudge the results.

4 years ago | 0