Hello:

I have a chart that looks like this:

Chart {
            ForEach(measurements) { measurement in // iterate through all of the measurement data
                ForEach(measurement.values.indices, id: \.self) { index in
                    let datapoint = measurement.values[index]
                    if showData[measurement.name]![index]{
                        BarMark(x: .value(xValueLabel, datapoint.dateTime, unit: .hour), y: .value(measurement.name.description,  datapoint.value), width: 10.0)
                            .foregroundStyle(by: .value("Measurement", measurement.name.description))
                            .clipShape(RoundedRectangle(cornerRadius: 16))
                    } // end if
                } // end nested foreach
            } //end parent foreach

            if let chartSelDates { //shows the details for the selected date
                RectangleMark(
                    xStart: .value("Date",chartSelDates.lowerBound),
                    xEnd: .value("Date",chartSelDates.upperBound),
                    yStart: .value("Value", 0),
                    yEnd: .value("Value", yAxisScale.last!))
                .foregroundStyle(.gray.opacity(0.4))
                .zIndex(-1)
                .annotation(position: .top, spacing: 0, overflowResolution: .init(x: .fit(to: .chart), y: .disabled)) {
                    content
                        .fixedSize(horizontal: true, vertical: false)
                }
            } // end if
        } // end chart

This ends up producing a chart that looks like this. Notice how the last point overflows beyond the y-axis labels.

If I remove the "unit: .hour" bit from the line "BarMark(x: .value(xValueLabel, datapoint.dateTime, unit: .hour), y: .value(measurement.name.description, datapoint.value), width: 10.0)" then I get this chart

Can someone point me in the right direction as to what I should be changing to the bars stay inside of the chart space?

I figured out the problem. The issue was with the ".chartXScale" modifier. I had a range that did not match up with what the data needed. I hope this helps someone else.