C++ :: Doing Fourier Transform - Different Frequencies

Jul 5, 2013

I am having problems doing the fourier transform:

[URL] .....

My code is:

esc = 2;
maxi = 0;
fu = 500;
fo = 3000;

for (f=fu;f<=fo;f + esc) {

[Code] ....

Don't worry about the exp and complex numbers because they work correctly. N is the number of samples of the input (2500). Esc is the difference between different frequences. So the samples of the output are (1250).

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C :: Printing Histogram About Number Frequencies?

Mar 6, 2015

have this program .. i tried to make it work to give me this result output:

Code:
input array {1,3,5,1,1,8,6,6,1,3,2,1,6,8,8}
[0]
[1] *****
[2]*

[Code].....

instead i'm having asterisks at the end of the output

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C/C++ :: Play Scales At Certain Frequencies - Creating Array Within Class

Jun 24, 2014

I'm trying to create a program that will play scales at certain frequencies, but my arrays are not initializing correctly. I've read up to double check what i'm doing but it doesn't seem to be working. My only guess is my use of a global variable.

const int NotesInScale = 8;
class Scales {
private:
//all Major Scales
int CMajor[NotesInScale];
int GMajor[NotesInScale];

[Code] ....

i'm simply trying to put the frequencies in the scales (the numbers in the array) but I keep getting an error. I feel its a simple fix but i'm not seeing it.

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C++ :: Transform XML To TXT

Apr 14, 2015

This is how my .xml page looks in a web browser. Is there a way to transform my .xml file into .txt file so that the text file would look like this?

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C# :: Transform Seconds Into HH:MM:SS?

Jun 18, 2014

I am trying to transform seconds into HH:MM:SS. I thought it would be easy using the TimeSpan functions however my hours exceed 24 hours now and then therefor it is not viable for use.

private string getFormattedTimeFromSecond(double second)
{
TimeSpan t = TimeSpan.FromSeconds( second );
string answer = string.Format("{0:D2}h:{1:D2}m:{2:D2}s",
t.Hours,
t.Minutes,
t.Seconds);
}

This is what I have tried, however it does not like it much when hours exceed 24.

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C++ :: How To Transform A String Into A Char

Feb 8, 2015

I have had quite a head spinner on trying to transform a string into a char. I've been trying to do this for the project below.

[URL] ....

std::string str = "string";
const char* chr = str.c_str();
cout << *chr << endl;

Above is the code I have tried using and it stores data under *chr, it however only stores one letter rather than the entire word like for example string.

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C++ :: Transform TXT File To Char Vector?

Aug 17, 2013

I need to transform a .txt file to a char vector, but how to do it. as much as I could until now been transformed into vector string.

Code:
#include <iostream>
#include <fstream>
#include <string>
#include <vector>
using namespace std;

[Code].....

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C++ :: Transform Integer Array To BMP Image

Jun 8, 2013

I have a problem concerning transforming int array into bmp image. I wanted to add a post in this topic: [URL] .... , but unfortunately it is closed. Actually I have a question concerning the code written by Duoas. I have a function which takes values from the file and I want to convert it into bmp with the use of Duoas code. I do it like that(it's Duoas code + my load and main function) Is it something wrong with how I do it or it's rather sth wrong with the file.

It compiles without errors but when I run it: core dumped.

According to gdb debugger problem is here: double hue = (intarray[ row - 1 ][ col ] - min_value) * granularity; programs stops, segmentation fault ...

#ifndef INTARRAY2BMP_HPP
#define INTARRAY2BMP_HPP
#include <fstream>
#include <iostream>
#include <string>

[Code] ....

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C :: Verified Code For Computing Fast Furrier Transform Of Image

Jun 9, 2013

i am looking for a verified code in simple c, for generating fft of an input image (.jpg). the output can be a text file including fft coefficients.can you recommend me any source except open-cv?

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C++ :: Photoshop - Change Color Of Anchor Point In Transform Tool?

Aug 4, 2014

I was wondering if its possible to change the color of the anchor point in the transform tool.

Is this possible? Sometimes I'll move it and it takes forever to find it again on a dark image. The actual image of the cross hairs must live in the application contents somewhere? Or its made by script. After a quick search of "transform" I found this file.. Not exactly sure what I'm looking at inside but it appears to be c++ code? [URL] ....

SCREEN GRAB: [URL] ....
FILE: [URL] ....

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C++ :: Analysis Of Discrete Wavelet Transform - Modifying For Loop To Make It Faster

Aug 25, 2014

I have this code which performs the analysis part of discrete wavelet transform. It works pretty well. However, I wish to reduce the time that it consumes even further. I did use reserve() and it worked upto few msec.

int rows = signal.size();
int cols = signal[0].size();
int cols_lp1 =(int) ceil( (double) cols / 2);
vector<vector<double> > lp_dn1(rows, vector<double>(cols_lp1));
vector<double> temp_row;
temp_row.reserve(512);

[Code] ....

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C++ :: Unexpected Result Decrementing End Of Range Iterator In Call To Transform Algorithm

Aug 23, 2013

I found this piece code on the following site:

[URL]

I predicted the outcome as being 01230 as I thought the prefix decrement operator on iterator ce would prevent the final element of the list from being transformed.

I was wrong, the correct output is 01234.

So, I removed the decrement prefix and ran the test again, expecting a different result. It wasn't! The result was still 01234.

Only when I decremented ce twice did I get the result I initially expected, 01230.

why the first decrement of ce appears to have no effect?

#include <algorithm>
#include <functional>
#include <iostream>
#include <iterator>
#include <list>
#include <cstdio>
int main() {
typedef std::list<int> L;

[code]....

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C :: Transform Local Variable Into Global Variable?

Oct 25, 2014

I need to transform a local variable into a global variable so I can use it in one of my functions. I thought about passing the value as a parameter to this function but I can do this since the function is called inside the while loop and this variable counts how many times the while loop does (so the final value is outside the loop). Example to visualize better:

Code:
while(condition) {
function(parameter1, parameter2);
count = count + 1;
}
printf("%d
", count);

So, I need to transform the final value of "count" into a global variable. Can I do this?

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C++ :: Transform Program To Program Using Class

May 15, 2014

I have my program to load info about students from .txt file

Mrkvicka Jozef 2 1.75 2.1 0.4 1 0.49 1.27
Hrasko Jan 0.1 0.38 1 1.2
Mladek Peter 1.6 0.4 2 1.3 1.8
Petrzlen Robert 0.6 0 1.1 1.1 0.6 0.59
Horvath Ivan 1.6 0.8 0.7 1.3 1

My program is ruuning perfectly only problem is that i must transform it to program uses class, class student . Am very beginer in using classes, so far i do very easy programs using classes.

so far i have this

#include "stdafx.h"
#include "student.h"
student::student(vector<STUDENT> studenti) {
vStudent=studenti;

[Code] ....

I try to make it but its too difficult for me. in that student.h and student .cpp is 50 errors..

Here is my code

#include "stdafx.h"
#include <string>
#include <vector>
#include <sstream>
#include <iostream>
#include <fstream>
using namespace std;

[Code] ....

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