411 REFERENCE · Wikibooks
Linear Algebra and the C Language/a0eb
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
__NOTOC__
Install this file in your working directory.
/* ------------------------------------ */
/* Save as : dg_uv.h */
/* ------------------------------------ */
void G_points2D_mR(
W_Ctrl w,
double **A,
double **B
)
{
FILE *fp;
int c;
fp = fopen("a_main.plt","w");
fprintf(fp, " reset\n"
" set zeroaxis\n"
" set size ratio -1\n"
" plot[%0.3f:%0.3f] [%0.3f:%0.3f]\\\n"
" \"aU.plt\" with line,\\\n"
" \"aV.plt\" with line\n",
w.xmini,w.xmaxi,w.ymini,w.ymaxi);
fclose(fp);
fp = fopen("aU.plt","w");
for(c=C1; c<A[C_SIZE][C0]; c++)
fprintf(fp," %+.3f %+.3f \n",A[1][c],A[2][c]);
fclose(fp);
fp = fopen("aV.plt","w");
for(c=C1; c<B[C_SIZE][C0]; c++)
fprintf(fp," %+.3f %+.3f \n",B[1][c],B[2][c]);
fclose(fp);
printf(
" * open the file main.plt with Gnuplot. (Windows)\n"
" * Use the command into Gnuplot : load \"a_main.plt\" (Linux)\n\n");
}
/* ------------------------------------ */
/* ------------------------------------ */