OFC-2 - Y Axis Logarithmic Scale
This patch implements the capability to plot against a Y Axis using a logarithmic scale. Only base 10 is currently supported. Also negative values and fractions are not handled properly yet.
You must add the "log-scale":true property to the Y Axis definition and it is recommended that you provide specific locations for the labels instead of using the "steps" feature.
Patch Information
ID #TBD - Y Axis Logarithmic Scale
I will generate a patch after the next release of OFC2.
Download a prebuilt SWF and source code on the Downloads page.
As of 17 January 2009:
Keys Legend Enhancements HAVE NOT been included in OFC2 Development
Sample Chart
Here is a sample chart demonstrating a Y Axis with a logarithmic scale.
Here is a link to view the JSON. Here is a quick look at the JSON:
"y_axis":{
"min": 1,
"max": 3000000,
"steps": 100000,
"log-scale":true,
"labels":{"labels":[{"y":1},
{"y":2,"text":""},
{"y":3,"text":""},
{"y":4,"text":""},
{"y":5,"text":""},
{"y":6,"text":""},
{"y":7,"text":""},
{"y":8,"text":""},
{"y":9,"text":""},
{"y":10},
{"y":100},
{"y":1000},
{"y":10000},
{"y":100000},
{"y":200000,"text":""},
{"y":300000,"text":""},
{"y":400000,"text":""},
{"y":500000,"text":""},
{"y":600000,"text":""},
{"y":700000,"text":""},
{"y":800000,"text":""},
{"y":900000,"text":""},
{"y":1000000},
{"y":2000000},
{"y":3000000},
]}
},
"elements":[
{"type":"scatter_line",
"colour":"#00B9FF",
"text":"Avg",
"font-size": 10,
"dot-size": 3,
"tip":"[#x#, #y#]",
"values":[{"x":1, "y":1},
{"x":2, "y":2},
{"x":3, "y":20},
{"x":4, "y":200},
{"x":5, "y":2000},
{"x":6, "y":20000},
{"x":7, "y":200000},
{"x":8, "y":2000000}
]
}
],
...
"log-scale":true, indicates that the Y Axis should be a logarithmic scale.