Chart2 Direct Series Data Series Transparency

Overview 

The Data Series and Data Point of a Chart can be styled using the various style_* methods of the ChartDataSeries and ChartDataPoint classes.

Setup 

General setup for examples.

from __future__ import annotations
from pathlib import Path
import uno
from ooodev.calc import CalcDoc, ZoomKind
from ooodev.loader.lo import Lo
from ooodev.utils.color import StandardColor
from ooodev.format.inner.preset.preset_gradient import PresetGradientKind

def main() -> int:
    with Lo.Loader(connector=Lo.ConnectPipe()):
        fnm = Path.cwd() / "tmp" / "col_chart.ods"
        doc = CalcDoc.open_doc(fnm=fnm, visible=True)
        Lo.delay(500)
        doc.zoom(ZoomKind.ZOOM_100_PERCENT)

        sheet = doc.sheets[0]
        sheet["A1"].goto()
        chart_table = sheet.charts[0]
        chart_doc = chart_table.chart_doc
        _ = chart_doc.style_border_line(
            color=StandardColor.BLUE_LIGHT3,
            width=0.7,
        )
        _ = chart_doc.style_area_gradient_from_preset(
            preset=PresetGradientKind.TEAL_BLUE,
        )

        ds = chart_doc.get_data_series()[0]
        ds.style_area_transparency_transparency(50)

        Lo.delay(1_000)
        doc.close()
    return 0

if __name__ == "__main__":
    SystemExit(main())

Transparency 

Before formatting the chart is seen in Fig. 829.

Setting Transparency 

The style_area_transparency_transparency() method can be called to set the data series transparency of a chart.

Style Data Series 

# ... other code

ds = chart_doc.get_data_series()[0]
ds.style_area_transparency_transparency(50)

The results can bee seen in Fig. 579 and Fig. 580.

Fig. 579 Chart with data series transparency set

Fig. 580 Chart Data Series Area Transparency Dialog

Style Data Point 

# ... other code
ds = chart_doc.get_data_series()[0]
dp = ds[-1]
dp.style_area_transparency_transparency(50)

The results can bee seen in Fig. 581.

Fig. 581 Chart with data point transparency set

Gradient Transparency 

Before formatting the chart is seen in Fig. 829.

Setting Gradient 

The style_area_transparency_gradient() method can be called to set the data series gradient transparency of a chart.

Style Data Series 

from ooodev.utils.data_type.intensity_range import IntensityRange
from ooodev.utils.data_type.angle import Angle
# ... other code

ds = chart_doc.get_data_series()[0]
ds.style_area_transparency_gradient(
    angle=30,
    grad_intensity=IntensityRange(0, 100),
)

The results can bee seen in Fig. 582 and Fig. 583.

Fig. 582 Chart data series with gradient transparency set

Style Data Point 

from ooodev.utils.data_type.intensity_range import IntensityRange

# ... other code
ds = chart_doc.get_data_series()[0]
dp = ds[-1]
dp.style_area_transparency_gradient(
    angle=30,
    grad_intensity=IntensityRange(0, 100),
)

The results can bee seen in Fig. 584.

Fig. 584 Chart data point with gradient transparency set