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Last modified: 10 December 2007

URL: http://cxc.harvard.edu/chips4.0/gallery/axes_add.sl.html
Hardcopy (PDF): A4 | Letter

Gallery: Adding axes (S-Lang)

Examples


Using a line to indicate an axis

[ChIPS output]
Postscript version
add_curve("atan.fits[cols X,Y]",{"symbol.style","none"});

add_hline(0.0);

Adding an extra axis to a plot

[ChIPS output]
Postscript version
add_curve("atan.fits[cols X,Y]",{"symbol.style","none"});

add_axis(X_AXIS,0.0,1.0,10.0);
bind_axes("ax1","ax2");

% Set the tick marks on the new axis to extend to both sides
variable axis = ChipsAxis;
axis.majortick.style = "centered";
axis.minortick.style = "centered";
axis.majortick.length = 10;
axis.minortick.length = 6;
set_axis("ax2",axis);
set_axis_ticklabel_visible("ax2",0);

A single plot containing two datasets with a common axis

[ChIPS output]
Postscript version
set_preference("curve.symbol.style","none");

add_window(6.0,3.0);

add_curve("aspect.fits[cols time,ra]");

set_plot_xlabel("Time (s)");
set_plot_ylabel("RA (degrees)");

% Place the second Y axis at the right-edge of the plot
variable cid = ChipsId;
cid.coord_sys = PLOT_NORM;
add_axis(cid,Y_AXIS,1.0,1.0,10.0);

add_curve("aspect.fits[cols time,dec]",{"line.color","red"});
limits(Y_AXIS,AUTO,AUTO);

set_plot_ylabel("Dec (degrees)");

set_yaxis({"label.color","red","ticklabel.color","red"});

reposition_plot(0.2,0.2,0.8,0.93);

variable ax = ChipsAxis;
ax.majortick.interval = 1000.0;
ax.tickformat = "%.0f";
ax.offset.perpendicular = 30;
set_xaxis(ax);
variable ay = ChipsAxis;
ay.majortick.interval = 5.0e-3;
ay.tickformat = "%.3f";
ay.minortick.count = 4;
ay.offset.perpendicular = 60;
set_yaxis("ay1",ay);
ay = ChipsAxis;
ay.majortick.interval = 2.0e-3;
ay.tickformat = "%.3f";
ay.minortick.count = 3;
ay.offset.perpendicular = 60;
set_yaxis("ay2",ay);
set_axis("all",{"majortick.mode","interval"});

Two y axes on the left of the plot

[ChIPS output]
Postscript version
set_preference("curve.symbol.style","none");
set_preference("axis.offset.perpendicular","30");

add_window(6.0,3.0);

add_curve("aspect.fits[cols time,ra]",{"plot.style","open"});
reposition_plot(0.25,0.25,0.95,0.9);

set_xaxis({"majortick.interval",1000.0,"tickformat","%.0f"});
variable ay = ChipsAxis;
ay.ticklabel.angle = 45.0;
ay.majortick.interval = 5.0e-3;
ay.tickformat = "%.3f";
ay.minortick.count = 4;
set_yaxis(ay);

add_label(6.80096e7,259.258,"RA");

% Place the second Y axis to the left of the original axis
variable cid = ChipsId;
cid.coord_sys = FRAME_NORM;
add_axis(cid,Y_AXIS,0.12,1.0,10.0);
add_curve("aspect.fits[cols time,dec]",{"line.color","red"});
limits(Y_AXIS,AUTO,AUTO);

add_label(6.80096e7,67.1965,"Dec",{"color","red"});

set_cascading_property("ay2",chips_axis,"color","\"red\"");
ay = ChipsAxis;
ay.ticklabel.angle = 45.0;
ay.majortick.interval = 2.0e-3;
ay.tickformat = "%.3f";
ay.minortick.count = 3;
ay.offset.perpendicular = 60;
set_yaxis(ay);

set_axis("all",{"majortick.mode","interval"});

set_plot_xlabel("Time (s)");
Hardcopy (PDF): A4 | Letter
Last modified: 10 December 2007


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