plcol1: Set color, map1 

DESCRIPTION:

    Sets the color for color map1 (see the PLplot documentation).  

SYNOPSIS:

plcol1(col1)

ARGUMENTS:

    col1 (PLFLT, input) :    This value must be in the range from 0. to 1.
    and is mapped to color using the continuous map1 color palette
    which by default ranges from blue to the background color to red. 
    The map1 palette can also be straightforwardly changed by the user
    with plscmap1 or plscmap1l.