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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 | // $Id: x05c.c 11289 2010-10-29 20:44:17Z airwin $
//
// Histogram demo.
//
#include "plcdemos.h"
#define NPTS 2047
//--------------------------------------------------------------------------
// main
//
// Draws a histogram from sample data.
//--------------------------------------------------------------------------
int
main( int argc, const char *argv[] )
{
int i;
PLFLT data[NPTS], delta;
// Parse and process command line arguments
(void) plparseopts( &argc, argv, PL_PARSE_FULL );
// Initialize plplot
plinit();
// Fill up data points
delta = 2.0 * M_PI / (double) NPTS;
for ( i = 0; i < NPTS; i++ )
data[i] = sin( i * delta );
plcol0( 1 );
plhist( NPTS, data, -1.1, 1.1, 44, 0 );
plcol0( 2 );
pllab( "#frValue", "#frFrequency",
"#frPLplot Example 5 - Probability function of Oscillator" );
plend();
exit( 0 );
}
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