Regression lines

A regression line is a statistical tool used to predict future values from past values. The values of a linear regression line are calculated using a best-fit method (least squares) to place a straight line in the exact middle of a series data points. Linear regression lines are largely used in trend analysis.

Linear regression lines can be plotted against almost all series supported by GraphApplet and ScatterApplet, stacked bars series being the only exception.



<applet code="GraphApplet.class" codebase="../../../demo/applets/classes" archive="GraphChart.jar" width=500 height=300>

<param name="bordercolor" value="000000">
<param name="title" value="The JetChart Library,Regression lines">
<param name="scrollinglabelon" value="yes">
<param name="graphset0_scrollingbaron" value="yes">
<param name="tooltipson" value="yes">
<param name="multipletooltipson" value="yes">

<param name="labels" value="1950,1951,1952,1953,1954,1955,1956,1957,1958,1959,1960,1961,1962,1963, 1964,1965,1966,1967,1968,1969,1970,1971,1972,1973,1974,1975,1976,1977, 1978,1979,1980,1981,1982,1983,1984,1985,1986,1987,1988,1989,1990,1991, 1992,1993,1994,1995">

<!-- Creates a line series -->
<param name="serie1" value="line, ,ff0000">
<param name="serie1_values" value="631,645,704,717,709,759,794,794,784,849,847,822,864,865,921,917, 1005,1029,1069,1078,1096,1194,1156,1272,1220,1250,1363,1337,1467, 1428,1447,1499,1550,1486,1649,1664,1683,1612,1564,1685,1780,1696, 1776,1703,1745,1685">
<param name="serie1_markson" value="no">
<param name="serie1_thickness" value="2">

<!-- Enables a linear regression line. -->
<param name="serie1_reglineon" value="yes">
<param name="serie1_reglinecolor" value="0000ff">
<param name="serie1_reglinethickness" value="2">

<param name="graphset0_autoscaleon" value="no">
<param name="graphset0_scalemaxvalue" value="2000">
<param name="graphset0_scaleincrement" value="400">
<param name="graphset0_scalevalueformat" value="#,###">
<param name="graphset0_scaleposition" value="2">
</applet>