Saturday 23 July 2011
Basic text-formatted data lets you specify floating point values from 0—100, inclusive, as numbers. Values below zero are marked as missing; values above 100 are truncated to 100. The advantage of basic text format is that the values are easy to read and understand in the URL, and the default axis labels show the data values accurately. However, text formatting (whether simple or with custom parameters) results in the longest data string of all formats.
If your data includes values outside the specified range for text formatting, you can scale your data by converting it into percentages of the largest value in your data. Alternatively, you could use text formatting with custom scaling to handle the scaling for you.
Syntax:
chd=t:val,val,val|val,val,val...
- <data>
- Each series is one or more comma-separated values. Separate multiple series using a pipe character (
|). Values are floating point numbers from 0—100, inclusive. Values less than zero, or the underscore character ( _ ) are considered null values. Values above 100 are truncated to 100.
Example:
| A table with five values. The underscore is considered a null value, the -30 value falls below the minimum value, so it is dropped, and the 200 value is truncated to 100. |
Labels:
Basic Text Format
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