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Poor man's PHP chart library / screenshots / barcharth

Horizontal bar chart

Here is another bar diagram but this time its axes are reversed such the keys are on Y-axis and the values are shown on X-axis.

We have two series of values (Sales|Profit) plotted for twelve different keys (Jan-Dec).

Note that the bar chart knows to handle also the values that have different signs. That turning point I've called just "turn point" or null-point.