Answered

What goes before this?

You can change your 'Stuff =' line to the following: Stuff = sprintf('%s %s is the %d day of the year.', Month,Date,N); Or, yo...

What goes before this?

You can change your 'Stuff =' line to the following: Stuff = sprintf('%s %s is the %d day of the year.', Month,Date,N); Or, yo...

1 year ago | 0

| accepted

Answered

Changing amount of decimals in between loops

Just index into the vector that you created that specifies the number of places to which you wish to round for that iteration in...

Changing amount of decimals in between loops

Just index into the vector that you created that specifies the number of places to which you wish to round for that iteration in...

1 year ago | 0

Answered

How can I scope using degrees insted of seconds?

The Simulink Scope block always uses simulation time as the x axis. If you wish to plot two simulation signals against each oth...

How can I scope using degrees insted of seconds?

The Simulink Scope block always uses simulation time as the x axis. If you wish to plot two simulation signals against each oth...

1 year ago | 1

Answered

"Colon operands must be all the same type, or mixed with real scalar doubles" error I'm trying to run excel file into Matlab function

Well there are several things wrong with this code. You can't use size() to extract things from an array. Replace frq= size(Si...

"Colon operands must be all the same type, or mixed with real scalar doubles" error I'm trying to run excel file into Matlab function

Well there are several things wrong with this code. You can't use size() to extract things from an array. Replace frq= size(Si...

1 year ago | 0

Answered

How to plot phase plane only using trajectory equation?

Try something like this: c1 = 1; % replace with your desired constants c2 = -1; t=linspace(0, 10, 500); % adjust for your ...

How to plot phase plane only using trajectory equation?

Try something like this: c1 = 1; % replace with your desired constants c2 = -1; t=linspace(0, 10, 500); % adjust for your ...

1 year ago | 0

Answered

Sum the digits of a number?

I know it sounds too easy to be true but this manipulation is actually the same as modulo 9. No loops or string conversions need...

Sum the digits of a number?

I know it sounds too easy to be true but this manipulation is actually the same as modulo 9. No loops or string conversions need...

1 year ago | 2

Answered

How to find a unexpected high value and turn it to zero?

Here is a way to do this without a loop (using logical indexing) A = [2 3 4 2;5 6 7 3;8 9 0 6; 5 6 1 80;2 3 8 5;3 5 13 4] idx ...

How to find a unexpected high value and turn it to zero?

Here is a way to do this without a loop (using logical indexing) A = [2 3 4 2;5 6 7 3;8 9 0 6; 5 6 1 80;2 3 8 5;3 5 13 4] idx ...

1 year ago | 0

| accepted

Answered

How to include a vertical line at the sample when instant of landing

When I run your code, I don't get the error you cite on line 54. That seems to work fine. The only issue I found was when dete...

How to include a vertical line at the sample when instant of landing

When I run your code, I don't get the error you cite on line 54. That seems to work fine. The only issue I found was when dete...

1 year ago | 0

Answered

I used to be able to see "Command Window" and "Command History" at the same time, now I must switch back and forth?

If you bring the Command History to the top you can grab the top edge of that window (where the title 'Command History' is) and ...

I used to be able to see "Command Window" and "Command History" at the same time, now I must switch back and forth?

If you bring the Command History to the top you can grab the top edge of that window (where the title 'Command History' is) and ...

1 year ago | 0

Answered

how to print a table

This should be close to what you want. However, I have used the logical not, and, and or functions which appear to be diffferen...

how to print a table

This should be close to what you want. However, I have used the logical not, and, and or functions which appear to be diffferen...

1 year ago | 0

| accepted

Answered

Run a code for 100 years

I don't think the results are going to be very interesting but you could do what you are asking as follows: ro=1.49e11; ...

Run a code for 100 years

I don't think the results are going to be very interesting but you could do what you are asking as follows: ro=1.49e11; ...

1 year ago | 0

| accepted

Answered

Using Inequality in a For loop

Walter has correctly shown how to express mutiple inequality conditions in Matlab (you must include the & (and) operator). Howe...

Using Inequality in a For loop

Walter has correctly shown how to express mutiple inequality conditions in Matlab (you must include the & (and) operator). Howe...

1 year ago | 1

| accepted

Answered

how to fill between 2 graphs

What do you mean by "fill the gap"? Do you want to connect the start and end points so that this becomes a closed curve? If so...

how to fill between 2 graphs

What do you mean by "fill the gap"? Do you want to connect the start and end points so that this becomes a closed curve? If so...

1 year ago | 0

| accepted

Answered

Store matrices under different variable names within a loop?

Make A a 4x4x4 three-dimensional matrix instead of creating multiple 4x4 matrices: mat = randi([0, 9], [4,16]) A = zeros(4,4,4...

Store matrices under different variable names within a loop?

Make A a 4x4x4 three-dimensional matrix instead of creating multiple 4x4 matrices: mat = randi([0, 9], [4,16]) A = zeros(4,4,4...

1 year ago | 2

| accepted

Answered

Fill command issue for time series

Based on your sample data, you need to make a simple change to your code. Since your vectors are columns, you need to concatena...

Fill command issue for time series

Based on your sample data, you need to make a simple change to your code. Since your vectors are columns, you need to concatena...

1 year ago | 1

| accepted

Answered

Creating an array with exprnd numbers

Try this: A = zeros(100, 2); mu = 5; % or whatever you want for the mean of the distribution A(:,1) = exprnd(mu, size(A(:,1))...

Creating an array with exprnd numbers

Try this: A = zeros(100, 2); mu = 5; % or whatever you want for the mean of the distribution A(:,1) = exprnd(mu, size(A(:,1))...

1 year ago | 0

| accepted

Answered

when a save figure , the numbers appear in the name of the png with e+0X

Change your format spec to '/Figures/Distance_%d@%.3f.png' You might want to read up on the documentation for this: https://w...

when a save figure , the numbers appear in the name of the png with e+0X

Change your format spec to '/Figures/Distance_%d@%.3f.png' You might want to read up on the documentation for this: https://w...

1 year ago | 1

| accepted

Answered

How to get a variable value in the gain block. This variable value is defined in a Matlab function block.

To do this, I would use a Multiply block instead of a gain block. Make x an output from your Matlab function block. Connect th...

How to get a variable value in the gain block. This variable value is defined in a Matlab function block.

To do this, I would use a Multiply block instead of a gain block. Make x an output from your Matlab function block. Connect th...

1 year ago | 0

Answered

How to quickly find the first non-zero element without iterations in all columns in a sparse matrix?

Try this. In my test with a 1000x1000 random sparse 0 or 1 matrix (A = sparse(randi([0 1], 1000, 1000));) it is about 4 times f...

How to quickly find the first non-zero element without iterations in all columns in a sparse matrix?

Try this. In my test with a 1000x1000 random sparse 0 or 1 matrix (A = sparse(randi([0 1], 1000, 1000));) it is about 4 times f...

1 year ago | 0

Answered

can some xxplain what the following program does? Thank youuuu!: peso=5000; while (peso > 0) disp (‘I order another coffee’); dollar = dollar – 250; end disp (‘I finished drinking

Per Stephens comment, I'm repeating my comment as an answer (with some additions). This script does pretty much nothing other t...

can some xxplain what the following program does? Thank youuuu!: peso=5000; while (peso > 0) disp (‘I order another coffee’); dollar = dollar – 250; end disp (‘I finished drinking

Per Stephens comment, I'm repeating my comment as an answer (with some additions). This script does pretty much nothing other t...

1 year ago | 1

Answered

How can i discretize a signal within simulink?

Look at the ZOH (https://www.mathworks.com/help/simulink/slref/zeroorderhold.html) and Unit Delay (https://www.mathworks.com/hel...

How can i discretize a signal within simulink?

Look at the ZOH (https://www.mathworks.com/help/simulink/slref/zeroorderhold.html) and Unit Delay (https://www.mathworks.com/hel...

1 year ago | 0

Answered

How do I find maximum value of n so that 2^n is less than a value (ex, 500?)

I think you may be looking for log2. Documentation available here: https://www.mathworks.com/help/matlab/ref/log2.html

How do I find maximum value of n so that 2^n is less than a value (ex, 500?)

I think you may be looking for log2. Documentation available here: https://www.mathworks.com/help/matlab/ref/log2.html

1 year ago | 0

Answered

Diagonal matrix, wishing to solve Ax=b

I thought that I had commented on this question earlier with something that should work for you. Here is the code that I think ...

Diagonal matrix, wishing to solve Ax=b

I thought that I had commented on this question earlier with something that should work for you. Here is the code that I think ...

1 year ago | 0

Answered

help with inefficient code

Try this. There may be a more efficient approach but I'm pretty sure this will be faster than what you have now. T1.time = [ ...

help with inefficient code

Try this. There may be a more efficient approach but I'm pretty sure this will be faster than what you have now. T1.time = [ ...

1 year ago | 0

| accepted

Answered

Array indices must be positive integers or logical values.

The error text pretty much explains why you are getting an error. "Array indices must be positive integers or logical values" ...

Array indices must be positive integers or logical values.

The error text pretty much explains why you are getting an error. "Array indices must be positive integers or logical values" ...

1 year ago | 2

| accepted

Answered

How can I know if my laptop is plugged into AC power via Matlab?

That error message (''pmset' is not recognized as an internal or external command, operable program or batch file) is a Windows ...

How can I know if my laptop is plugged into AC power via Matlab?

That error message (''pmset' is not recognized as an internal or external command, operable program or batch file) is a Windows ...

2 years ago | 1

| accepted

Answered

Extracting a value from a 3D table

A 3d example using Matlab's indexing functions instead of floor and rem: t3=[1 2 NaN; 4 5 6; 7 8 9]; % a 2d matrix with one N...

Extracting a value from a 3D table

A 3d example using Matlab's indexing functions instead of floor and rem: t3=[1 2 NaN; 4 5 6; 7 8 9]; % a 2d matrix with one N...

2 years ago | 0

Answered

Legend not working with plot (just have some incorrect colors)

If you make the 'for radius = r' loop the inner loop instead of the outer loop, you should get what you want. What is happeni...

Legend not working with plot (just have some incorrect colors)

If you make the 'for radius = r' loop the inner loop instead of the outer loop, you should get what you want. What is happeni...

3 years ago | 0

Answered

I would like to evaluate a function for N=11,21,51,and 101 using a for loop, but I can only get it to do the last N.

You will need to use an array to store the four different df results. Since your df is going to be different sizes depending on...

I would like to evaluate a function for N=11,21,51,and 101 using a for loop, but I can only get it to do the last N.

You will need to use an array to store the four different df results. Since your df is going to be different sizes depending on...

3 years ago | 0