DENSITY:profiles

XPROFILE

 If the \XPROFILE qualifier is used, the columns of the matrix v are
 summed, the sums are normalized to be between 0 and 1, and a
 histogram of the normalized sums is drawn horizontally across the top
 of the graph.

 When a profile is drawn, the axis borders must be set to allow space for
 the profile, that is, %YUAXIS is set to 80. By default, %YUAXIS is reset
 to its former value. If \NORESET is used, the axis locations are not reset.

YPROFILE

 If the \YPROFILE qualifier is used, the rows of the matrix v are
 summed, the sums are normalized to be between 0 and 1, and a
 histogram of the normalized sums is drawn vertically along the right
 side of the graph.

 When a profile is drawn, the axis borders must be set to allow space for
 the profile, that is, %XUAXIS is set to 65% if a legend is present or 85%
 if there is no legend. By default, %XUAXIS is reset to its former value.
 If \NORESET is used, the axis locations are not reset.

PROFILES

 If the \PROFILES qualifier is used, both the horizontal and vertical
 profiles are drawn.

 When a profile is drawn, the axis borders must be set to allow space for
 the profile, that is, %YUAXIS is set to 80 and %XUAXIS is set to 65% if
 a legend is present or 85% if there is no legend. By default, %XUAXIS and
 %YUAXIS are reset to their former values. If the \NORESET qualifier is
 used, the axis locations are not reset.