Question

Decreasing simulation runtime in Simulink

My simulation runs slow and I believe it is not because of slow computer or extensive calculation. May be it's just the conditio...

4 years ago | 0 answers | 0

Question

Displaying image in Simulink using pixel stream

I am trying to display stream of pixels in Simulink. To start with, I create a 2D array, where the first column contains integer...

4 years ago | 1 answer | 0

Answered

detect square in image

I just thought of an alternative idea. Instead of detecting a square, you should register the image (filled form) of interest wi...

detect square in image

I just thought of an alternative idea. Instead of detecting a square, you should register the image (filled form) of interest wi...

6 years ago | 0

Question

32bit matlab on 64bit platform can not open .jpg

I installed a 32-bit student MatLab version on Win7 64Bit. When I try to import an image.jpg, it complaints about the endian sig...

7 years ago | 2 answers | 0

Question

Hi/Low analog output to USB

Hi, I am trying to use MatLAB script as an on/off switch. In simple words, I wish to set a constant output of ~0V (low) or ~5...

7 years ago | 3 answers | 0

Question

2D filter design tool

I wish to find a gui interfaced filter design tool that I could upload an image and see how it changes while changing filter pol...

7 years ago | 0 answers | 0

Question

Convert grayscale to RGB

I wish to convert a grayscale image to RGB where I would have color-to-black scale instead of white-to-black scale. Let's say I ...

7 years ago | 2 answers | 0

Question

How to save matrix to workspace instead of plotting using imagesc function

I don't understand how _imagesc_ function works (scales), but my images plotted using via that function look better than using _...

7 years ago | 1 answer | 0

Answered

How many ways to determine signal frequency?

I would recommend you to start from Wiki and read a little about each topic to get a general idea of how the methods apply. Reg...

How many ways to determine signal frequency?

I would recommend you to start from Wiki and read a little about each topic to get a general idea of how the methods apply. Reg...

8 years ago | 1

Answered

return of function

Let's say your function will have a name myFunction. As I understood, you want to pass a parameter to this function and get two ...

return of function

Let's say your function will have a name myFunction. As I understood, you want to pass a parameter to this function and get two ...

8 years ago | 0

Answered

Need some help with the MatLab GUI

Since you already have your algorithms written, just create a new GUI and drug three buttons and one axis on the form. Automatic...

Need some help with the MatLab GUI

Since you already have your algorithms written, just create a new GUI and drug three buttons and one axis on the form. Automatic...

8 years ago | 0

Answered

Edge Detectors

I would recommend you to try out all and see which one works better in your case. I had to do it once and I applied edge enhance...

Edge Detectors

I would recommend you to try out all and see which one works better in your case. I had to do it once and I applied edge enhance...

8 years ago | 0

| accepted

Answered

plot histogram without using matlab hist() function

It depends on how you want to bin your data and what kind of data you have. The idea of hist function is similar to stacks of c...

plot histogram without using matlab hist() function

It depends on how you want to bin your data and what kind of data you have. The idea of hist function is similar to stacks of c...

8 years ago | 2

| accepted

Answered

divide audio signal into frames

If you know for sure that your signal is 2 seconds long, then the sampling frequency can be found from dt*N=2, where dt=1/fs is ...

divide audio signal into frames

If you know for sure that your signal is 2 seconds long, then the sampling frequency can be found from dt*N=2, where dt=1/fs is ...

8 years ago | 2

| accepted

Answered

Reading data from text box

Yes. However, as soon as the button function is executed, your N is deleted. If you want to keep the data in memory, you should ...

Reading data from text box

Yes. However, as soon as the button function is executed, your N is deleted. If you want to keep the data in memory, you should ...

8 years ago | 2

| accepted

Answered

Bug about saving a variable

x=2; yourfile='name.mat'; %saves in the current directory save yourfile x load yourfile Strange... I don't get an err...

Bug about saving a variable

x=2; yourfile='name.mat'; %saves in the current directory save yourfile x load yourfile Strange... I don't get an err...

8 years ago | 0

Answered

Delay using Cross correlation

The output of xcorr is an array of values of how one array is similar to the other. The maximum value is when two arrays match t...

Delay using Cross correlation

The output of xcorr is an array of values of how one array is similar to the other. The maximum value is when two arrays match t...

8 years ago | 1

| accepted

Answered

Convolution

First of all, this f=8000; b=8; is useless information because it will be rewritten anyway below, unless this ...

Convolution

First of all, this f=8000; b=8; is useless information because it will be rewritten anyway below, unless this ...

8 years ago | 1

| accepted

Answered

Convolution, discrete time (not using conv)

just implement the equation http://en.wikipedia.org/wiki/Convolution#Circular_discrete_convolution and use sum from 1 to N ins...

Convolution, discrete time (not using conv)

just implement the equation http://en.wikipedia.org/wiki/Convolution#Circular_discrete_convolution and use sum from 1 to N ins...

8 years ago | 0

Answered

load matlab file to current workspace

_uigetfile_ gets the path, not the data. Before saving you need to load your file. Thus, use function _load_ and give it the pat...

load matlab file to current workspace

_uigetfile_ gets the path, not the data. Before saving you need to load your file. Thus, use function _load_ and give it the pat...

8 years ago | 1

| accepted

Answered

simple problem

Your code is correct: the 'for' loop makes a copy of the first column of matrix a. Is it that what you wanted to do? You have to...

simple problem

Your code is correct: the 'for' loop makes a copy of the first column of matrix a. Is it that what you wanted to do? You have to...

8 years ago | 0

Answered

3D graphs with 3 variables function as Z

x=[1:10]; y=[1:10]; z=rand(1,10); plot3(x,y,z)

3D graphs with 3 variables function as Z

x=[1:10]; y=[1:10]; z=rand(1,10); plot3(x,y,z)

8 years ago | 0

Answered

Break statements still result in the first condition breaking array element being shown - how can it be stopped from being generated?

As far as I understand, you don't care weather you reach the end of the A array or not. As soon as you hit the fist value that i...

Break statements still result in the first condition breaking array element being shown - how can it be stopped from being generated?

As far as I understand, you don't care weather you reach the end of the A array or not. As soon as you hit the fist value that i...

8 years ago | 0

Answered

Hiding text of a string (like passwords)

See if this will help http://blogs.mathworks.com/pick/2007/10/05/masking-typed-passwords-with-asterisks/

Hiding text of a string (like passwords)

See if this will help http://blogs.mathworks.com/pick/2007/10/05/masking-typed-passwords-with-asterisks/

8 years ago | 0

| accepted

Answered

Writing a function (.m executable) - how do I perform tasks on my workspace variables?

pass your blah matrix as an argument to your function: yourfunction(blah1,blah2);

Writing a function (.m executable) - how do I perform tasks on my workspace variables?

pass your blah matrix as an argument to your function: yourfunction(blah1,blah2);

8 years ago | 0

Answered

Ask User to Continue

Set the infinite loop. I did not check if this code runs, but the idea is this: while(1) %%your code here m=input('...

Ask User to Continue

Set the infinite loop. I did not check if this code runs, but the idea is this: while(1) %%your code here m=input('...

8 years ago | 2

| accepted

Answered

Colormap Grid

I would make a 2D matrix with 1000 rows and 10 columns and the color in each of 1000*10 squares would represent the relative mag...

Colormap Grid

I would make a 2D matrix with 1000 rows and 10 columns and the color in each of 1000*10 squares would represent the relative mag...

8 years ago | 0

Answered

Sum of numeric string.

I hope you realize that computer has finite memory and can not run it forever to reach your infinity, so you gonna have to stop ...

Sum of numeric string.

I hope you realize that computer has finite memory and can not run it forever to reach your infinity, so you gonna have to stop ...

8 years ago | 0

Answered

Plotting in GUI

1) Drug two axis objects onto the gui 2) Double click on each and change the tag property name to Force and angle resepctively.

Plotting in GUI

1) Drug two axis objects onto the gui 2) Double click on each and change the tag property name to Force and angle resepctively.

8 years ago | 0

Answered

How to create a movie and play it instead of using a for loop of plots

Here is what I use. Don't know if it will work as is, but first it should play it (as a sequence of frames of 3D matrix DATA) an...

How to create a movie and play it instead of using a for loop of plots

Here is what I use. Don't know if it will work as is, but first it should play it (as a sequence of frames of 3D matrix DATA) an...

8 years ago | 0