多項式曲線擬合 任意介數 Purpose - Least-squares curve fit of arbitrary order
working in C++ Builder 2007 as a template class,
using vector<FloatType> parameters.
Added a method to handle some EMathError exceptions.
If do NOT want to use this just call PolyFit2 directly.
usage: Call PolyFit by something like this.
CPolyFit<double> PolyFitObj
double correlation_coefficiant = PolyFitObj.PolyFit(X, Y, A)
where X and Y are vectors of doubles which must have the same size and
A is a vector of doubles which must be the same size as the number of
coefficients required.
returns: The correlation coefficient or -1 on failure.
produces: A vector (A) which holds the coefficients.
I made a lot of changed on this object,such as *
// 1.Encapsulates all code in one userobjet,since PB does not *
// support "Address of Function" , so we can not set new *
// WndProc, just makes the object more easy to use. *
// 2.Uses structure array instead of Datastore *
// 3.Calc width of menuitem at runtime(MEASUREITEM) *
// 4.Draw disabled status
C/C++ implementation of the Levenberg-Marquardt non-linear
least squares algorithm. levmar includes double and single precision LM versions, both
with analytic and finite difference approximated jacobians
linux下用C語言寫的聊天程序！/*BUG and NOTE:
Not join protect to Shared Memory Segments,example Semaphore Arrays.
Not check the parameters validity.
When transmit may be error.
If the client program no right exit,others cannot know,the service program shouldbe check the client program whether exist timing.
The program when exit(), it do not delete the Shared Memory Segments,you maybe use atexit() but the program have some processes.
When one process is exit(),others is continue.
The service program s action is few.
And so on. */
This programme is to control DC motor in a certain speed using PWM.
The target speed is "r", it is the speed in 1s.
The sample rate is 0.1s, so the actual speed target is "rc"=r/10.
The "r" and "rc" are integer, and the range of "r" is from 50 to 100.
Keep rc=r/10!!!
The array "speed1" and "speed2" are the control result, in 0.1s and 1s.
The length of "speed1" is 2400, and "speed2" is 240.
The "pw" and "nw" are the parameters of PWM.
The test will last 4 min.
