A Chart with logarithmic Scale

For data, which grows exponentially you might need logarithmic scale axis. This is quite often used in financial charts, to show the grow of stocks over a long period. The use of the logarithms of the values rather than the actual values reduces a wide range to a more manageable size.

Parameter for creation of chart

[No canvas support]>
Parameter for creation of chart
{rgraph type="Line" width="600" height="350" title="Logarithmic Scale"
data="May 1,May 2,May 3,May 4,May 5,May 6,May 7,May 8,May 9,May 10,May 11,May 12,May 13,May 14,May 15
/2,75,150,750,158,570,107,890,750,132,158,560,169,240,147" filled="0" yaxisLabelsCount="6"
log_scale="1" xaxisLabelsAngle="15" ymin="1" ymax="890" spline="true" yaxisScaleUnitsPost="$" draw_option="}cvs{/rgraph}

 

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