Re: Plot one additional point, manually

> maybe the 'replot' command helps:

> for (i = 0; i<  30; i++) {
>    x = (double) rand() / RAND_MAX;
>    y = (double) rand() / RAND_MAX;
>    if (i) {
>       fprintf(pipe,
>          "replot '<  echo %lf, %lf' w p pt 7 lc -1 notitle \n",
>          4*x, 4*y);
>    } else {
>       fprintf(pipe,
>          "plot '<  echo %lf, %lf' w p pt 7 lc -1 notitle \n",
>          4*x, 4*y);
>    }
>    fflush(pipe);
>    usleep(150000);
> }

Yes, that solution also works ! However I tested it and it's really slow. Saving the data to a file and reading it is faster, like:

--------------------------------------------------------------------------------------------------------------

    FILE *output;
    output = fopen("data.txt", "w");

    for (i = 1; i <= MAX; i++) {
        x = (double) rand() / RAND_MAX;
        y = (double) rand() / RAND_MAX;

        fprintf(output, "%lf %lf \n", x, y);
    }

    fclose(output);

    for (i = 1; i <= MAX; i++) {
        fprintf(pipe, "plot 'data.txt' every ::1::%d using ($1*4):($2*4) pt 7 lc -1 notitle \n", i);
        fflush(pipe);
        usleep(1000);
    }

-----------------------------------------------------------------------------------------------------------

Then, so far, I guess that's an acceptable way of using the C environment for making animations. And if I need some extra flexibility I could save each image and merge them with ffmpeg.
About the mailing list, I'm sending the messages through Nabble forum and I keep receiving : Your recent message has not yet been accepted by the mailing list and is still in the pending status. So I think it is weird that I'm getting answers, and the mailing list actually receives my messages.