Mountain class derived class for Chart to implement mountain type of plots. More...


Private Functions | |
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| private | _draw_data |
| draw the data | |
| private array | _find_y_range () |
| Find minimum and maximum value of y data sets. | |
Mountain class derived class for Chart to implement mountain type of plots.
Some Mountain chart details:
The effective y data value for a given x point and dataset is the sum of the actual y data values of that dataset and all datasets "below" it (i.e., with higher dataset indexes).
If the y data value in any dataset is undef or negative for a given x, then all datasets are treated as missing for that x.
The y minimum is always forced to zero.
To avoid a dataset area "cutting into" the area of the dataset below it, the y pixel for each dataset point will never be below the y pixel for the same point in the dataset below the dataset.
| private array Chart::Mountain::_find_y_range | ( | ) |
Find minimum and maximum value of y data sets.
Reimplemented from Chart::Base.
1.7.1