Name 
Type 
g/s 
Description 
brgb 
int 

Three chars represent the red, green and blue values of the background color to render 
clearit 
int 

If nonzero the cells of the matrix will be cleared to the brgb color before rendering. 
frgb 
int 

Four chars represent the alpha, red, green and blue values of the color to render 
height 
int 

The height of the output matrix (default=240) 
width 
int 

The height of the output matrix (default=240) 
xmax 
float 

The floating point value to map to the right of the graph (default=1.0) 
xmin 
float 

The floating point value to map to the left of the graph (default=1.0) 
ymax 
float 

The floating point value to map to the top of the graph (default=1.0) 
ymin 
float 

The floating point value to map to the left of the graph (default=1.0) 