initial commit

DocProjet/Gnuplot/exemple.cpp

@@ -0,0 +1,28 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <math.h>
+#define NUM_POINTS 100
+#define NUM_COMMANDS 2
+
+int main()
+{
+    char* commandsForGnuplot[] = {"set title \"EXEMPLE\"", "plot 'data.temp'"};
+	double xvals[NUM_POINTS];
+    double yvals[NUM_POINTS];
+    FILE * temp = fopen("data.temp", "w");
+    FILE * gnuplotPipe = popen ("gnuplot -persistent", "w");
+    int i;
+    
+    for (i=0; i < NUM_POINTS; i++)
+    {
+		xvals[i]= i*3,1415/50;
+		yvals[i]= cos(xvals[i]);
+		fprintf(temp, "%lf %lf \n", xvals[i], yvals[i]);
+    }
+
+    for (i=0; i < NUM_COMMANDS; i++)
+    {
+    fprintf(gnuplotPipe, "%s \n", commandsForGnuplot[i]);
+    }
+    return 0;
+}