forum.alglib.net

real_2d_array samet = "[[10,12,6],[12,15,7],[6,7,11]]", temp;
real_1d_array dd;
smatrixevd(samet,3,1,true,dd,temp);
for(int a =0; a<3;a++)
{
printf("%.6lf ,", dd[a]);
}
cout<<endl;
for (int i =0; i<3; i++) {
for (int j=0; j<3;j++) {
printf("%.6lf ,", temp[i,j]);
}
cout<<endl;
}


Here is output
0.234527 ,6.385771 ,29.379703 ,
0.000000 ,0.000000 ,0.000000 ,
0.000000 ,0.000000 ,0.000000 ,
0.000000 ,0.000000 ,0.000000 ,

You have error in the printf statement. It must be

I certainly did... now it works.
Thank you so much.

Please provide a code on using setlength call in the program.
Also please add a code which shows the use of double array(2-dimentional) and used with smatrixevd function.
Thank You.

You can read manual for such info: http://www.alglib.net/translator/man/ma ... #gs_vecmat

As for examples on smatrixevd()... well, it is planned to add examples for all ALGLIB functions. However, this particular function is really easy to use, thus it is not in top-priority list.

Can we integrate complex exponential functions using ALGlib? please suggest a function to do so.

Also I wanted to know is it possible to extract value of integration at certain points between limits?
ex. If I am integrating over limits of [0,100], I want to find what the values are of the integration function provided by ALGlib
for all the multiples of 10 between [0, 100].
The reason is I want to plot a graph of these extracted values against the limit values.

In the current version you have to manually divide interval into smaller intervals and calculate integrals.

As for complex integrals, you can calculate them by reducing your problem to the two real ones.