plhiss

plot shaded histogram

parameter	type	units	description
x,y	float*	uu	arrays defining the histogram
n	int	--	number of elements in the arrays
type	int	--	histogram type: BARS, ENVELOPE or STICKS
baseline	int	--	if TRUE, a baseline is drawn
ybase	float	uu	y-position of the baseline, if any
style_contour	int	--	line style for the histogram contours
angle	float	degr	angle for hatching
distance	float	mm	distance between hatching lines
style_shade	int	--	line style for hatching lines
returns:	void

Description

plhiss plots a histogram using values in arrays x (position) and y (height+ybase). x must be in ascending order. If baseline is TRUE a baseline is drawn at y=ybase. type determines the histogram type and can have one of three predefined values: BARS, ENVELOPE and STICKS. See the example for further explanation. The histogram contours are dashed according to the parameter style_contour the histogram may also be hatched by setting distance to a non-zero value.

Examples

#include <simplot.h>
int main() {
   float x[] = { 1, 2, 3, 4, 6, 8,12,14,15,16,17,18,20,
                 21,23,24,25,26,30,40,41,45,46,48,50};
   float y[] = { 5,15,-10,15,25,20,15,-17,-25,-5,-20,0,
                 6,7,8,9,10,9,8,7,6,-5,-15,-20,-25};
   int type[] = {BARS, BARS,  ENVELOPE, STICKS};
   int base[] = {TRUE, TRUE,  FALSE,    TRUE};
   int das[]  = {DOWN, DOWN,  DOWN,     DOWN};
   int ang[]  = {0,    45,    0,        0};
   int dis[]  = {1,    1,     0,        0};
   int sda[]  = {0,    1111,  0,        0};
   char *s[5]={"FALSE","TRUE","STICKS","ENVELOPE","BARS"};
   int i;

   plinit(PS,"plhiss",200,150,0,0,"","");
   for (i=0;i<4;i++) {
      plreserv(30,25,55);
      plhiss(x,y,25,type[i],base[i],0,das[i],ang[i],dis[i],sda[i]);
      plot(31,-5,UP);
      plformat(0,-.5,"type=%s\n"
               "baseline=%s\n"
               "angle=%d\n"
               "distance=%d\n"
               "style__contour=%d\n"
               "style__shading=%d",
               s[type[i]],s[base[i]],ang[i],dis[i],das[i],sda[i]);
   }
   exit(0);
}