ahay / src

Is it possible to change the background of the images? I have always a black background and yellow lines when I use sfgraph or sfwiggle, can I change it to black lines over white?

Thank you

in your Sconstruct you can add
import os
os.environ['SFPENOPTS'] = 'bgcolor=w'

I tried but it didn't change anything

do you use sfpen for display?
I don't know where things are today as I am still on Madagascar 2
You have to dig the environmental variable of your rendering routine.

Try sfpen bgcolor=w filename.vpl

Ok thank you very much, now it works. There are other options for bgcolor?

There are four options:

src/pens/main/oglpen.c

Lines 195 to 208 in 9cafc45

    
           if (NULL == (color = sf_getstring ("bgcolor"))) color = "black"; 
        
           /* background color (black,white,light,dark) */ 
        
           switch (color[0]) { 
        
               case 'b': /* black */ 
        
               case 'd': /* dark */ 
        
               default: 
        
                   light = false; 
        
                   break; 
        
               case 'w': /* white */ 
        
               case 'l': /* light */ 
        
                   light = true; 
        
                   break; 
        
           }

But there are only two background colors, white or black.

	if (NULL == (color = sf_getstring ("bgcolor"))) color = "black";
	/* background color (black,white,light,dark) */

	switch (color[0]) {
	case 'b': /* black */
	case 'd': /* dark */
	default:
	light = false;
	break;
	case 'w': /* white */
	case 'l': /* light */
	light = true;
	break;
	}

Plotting with Madagascar