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I have a mex function which reads data from a file and process it result = mex_process_data(string_path_to_file); The da...

3 Answers

0

Asked 1 month ago

I found the solution myself. Normalizing spectral amplitude by fs will work. But I don't know why to do this.

accepted

Answered 10 months ago

Walter Roberson <roberson@hushmail.com> wrote in message Thanks Walter. I've read it. I have had some experiments and found t...

6515 views

Responded 5 years ago

Some complement: For a small quandrangle V1V2V3V4, points V1 and V2 have the same latitude, so do points V3 and V4. Moreover, p...

Hi, Roger. Yes, I don't care elevation on solving the intersection. See the post above for more details.

Oh, it's some confusing. I think I must state my question again. At first, I deal with my problem on a spherical earth surface...

hi, guys. thanks for all your suggestions and discussions. I have looked throug and I'll read them carefully soon. All the point...

Altitudes are also known. Oh, perhaps, I must take altitudes into consideration. Does this work if A and B are not too far away...

The story below happens on Earth surface. There is an arc of a great circle (AB), the two endpoints of which are placed at (lat...

Posted 5 years ago

I found a solution to disable the security certificate. http://stackoverflow.com/questions/1638275/handling-an-invalid-security...

5209 views

That must be the reason. But there is no certificate dialog appearing on my computer.

Aurelien Queffurust" <tug83@yahoo.fr> wrote in message I can also open the url you gave. So, https is not the reason. I cannot...

I don't use a proxy (the option in Preference-Web unchecked). I can open many sites such as google, yahoo and facebook. But I ca...

I can open successfully the web url in IE and firefox. And I can open it with the web browser of a lower version of matlab. But ...

Is it possible to call a subfunction inside a mscript function and get the returned value? e.g., the content of 'func.m' as b...

2 Answers

Asked 8 months ago

The energy of a signal is expected to be the same in t and f domain. n = 1e4; dx = 0.25; x = rand(n,1) -0.5; ...

Asked 10 months ago

As for cos(2*pi*t), the peaks locates at -1 and 1 Hz with a value of 0.5. It's correct. t = 0:0.1:10; x = cos(2*pi*...

1 Answers

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Asked 1 year ago

I know when N is even, fft(x,N) corresponds to frequencies 0,df,...,N/2*df,-(N/2-2)*df,...,-df. What about if N is odd?

I tried to get data from url 'http://trend.lecai.com/bjkl8Zst!bjkl8jbzs.jhtml?date=2013-03-20'. Access to the webpage works fin...

3792 views

Posted 2 years ago

I plotted a contour figure using 'contourf'. There is a '10^-3' label on the side of colorbar. I wanna remove it and make the ti...

3493 views

Posted 4 years ago

Thanks, Roger. Nice interpretation! In practice, I have been considering that the quasi-singularity of the matrix arises from th...

3125 views

Responded 3 years ago

Yeah, I used the backslash in my code. I'm linearizing a nonlinear inversion problem and solving A*m=b in a least squares sense...

3.40411799,-0.37565809,7.34175377,-1.17789516 -3.87102015,-0.13046468,8.34873435,-1.33945295 -3.87102015,0.13046468,8.34873435,-...

Posted 3 years ago

I cannot use anything related to java, or only part of functions related to java?

Asked 16 days ago

Given the latitudes and longitudes of two points, how to get the middle point efficiently? My trouble is there are millions o...

Asked 3 months ago

the matlab function gcwaypts generates points on the short arc of the great circle across two given points. How to get the f...

Asked 11 months ago

The license of a matlab toolbox allows only several users in the meantime. How to quit from the occupied license?

Why the second one gives rise to empty struct? s.a=1; s.b=2; s.c={} s = a: 1 b: 2 c: {} ...

n = 1000; t = 1:n; x = rand(1,n) - 0.5; x = sin(2*pi/100*t); y = decimate(x,4); figure('color','w'); ha = a...

I can access websites using the matlab web browser. I can NOT download a url link using 'urlread'. Is there any other mat...

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