[Article in German] BÃ¶hm M. Adenosine has a negative inotropic effect in cardiac atrial preparations (direct negative inotropic effect). This effect is probably due to an activation of a potassium outward current which shortens the action potential duration and hence reduces the force of contraction.
A scatterplot is a graph that is used to plot the data points for two variables. Each scatterplot has a horizontal axis (x-axis) and a vertical axis (y-axis). One variable is plotted on each axis.
This example shows a simple scatter plot with grouped data that is clustered. proc sgplot data=sashelp.revhub2; scatter x=hub y=revenue / group=type groupdisplay=cluster clusterwidth=0.5; xaxis type=discrete; run; Create the scatter plot. In the SCATTER statement, the GROUP= option groups the data by the TYPE variable. The GROUPDISPLAY option specifies that the grouped markers are clustered. The CLUSTERWIDTH option specifies the width of the group clusters.