You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
24 lines
1.1 KiB
24 lines
1.1 KiB
This library provides KPlotWidget and KPlotObject classes.
|
|
|
|
KPlotWidget is a QWidget-derived class that provides a virtual baseclass
|
|
for easy data-plotting. The idea behind KPlotWidget is that you only have
|
|
to specify information in "data units"; i.e., the natural units of the
|
|
data being plotted. KPlotWidget automatically converts everything
|
|
to screen pixel units.
|
|
|
|
KPlotWidget draws X and Y axes with tickmarks and tick labels. It
|
|
automatically determines how many tickmarks to use and where they should
|
|
be, based on the data limits specified for the plot. You change the limits
|
|
by calling setLimits( double x1, double x2, double y1, double y2 ), and
|
|
then calling updateTickmarks() to recompute the positions of tickmarks
|
|
and ticklabels.
|
|
|
|
Data to be plotted are stored using the KPlotObject class. KPlotObject
|
|
consists of a QPtrList of DPoints, each specifying the X,Y coordinates
|
|
of a data point (DPoint is like QPoint, but the X and Y values are doubles
|
|
instead of ints). KPlotObject also specifies the "type" of data to be
|
|
plotted (POINTS or CURVE or POLYGON or LABEL).
|
|
|
|
Jason Harris
|
|
kstars@30doradus.org
|