Question

是否可以在标签末尾绘制轴标签？有关详细信息，请参见图片：

http://habrastorage.org/files/94f/41a/b18/94f41ab1897a4bde815644bf287b4af9.png

如果有可能，怎么样？

vtkNew<vtkContextView> contextView;

vtkNew<vtkTable> table;
vtkNew<vtkChartXY> chart;
vtkNew<vtkDoubleArray> timeAxis;
vtkNew<vtkDoubleArray> realDataAxis;
vtkNew<vtkDoubleArray> measuredDataAxis;

// ...

contextView->SetInteractor(vtkWidget->GetInteractor());
vtkWidget->SetRenderWindow(contextView->GetRenderWindow());

timeAxis->SetName("t");
realDataAxis->SetName("x(t)");
measuredDataAxis->SetName("x*(t)");

table->AddColumn(timeAxis.Get());
table->AddColumn(realDataAxis.Get());
table->AddColumn(measuredDataAxis.Get());

chart->SetShowLegend(true);
auto legend = chart->GetLegend();
legend->GetLabelProperties()->SetFontSize(14);
legend->GetLabelProperties()->SetFontFamilyToTimes();

auto xAxis = chart->GetAxis(vtkAxis::BOTTOM);
xAxis->SetTitle(QApplication::translate("DataSetChartWidget", "t").toStdString());

auto xTitleProps = xAxis->GetTitleProperties();
xTitleProps->SetFontSize(14);
xTitleProps->SetFontFamilyToTimes();

auto xLabelProps = xAxis->GetLabelProperties();
xLabelProps->SetFontSize(14);
xLabelProps->SetFontFamilyToTimes();

auto yAxis = chart->GetAxis(vtkAxis::LEFT);
yAxis->SetTitle(QApplication::translate("DataSetChartWidget", "x(t), x*(t)").toStdString());

auto yTitleProps = yAxis->GetTitleProperties();
yTitleProps->SetFontSize(14);
yTitleProps->SetFontFamilyToTimes();

auto yLabelProps = yAxis->GetLabelProperties();
yLabelProps->SetFontSize(14);
yLabelProps->SetFontFamilyToTimes();

contextView->GetScene()->AddItem(chart.Get());

用于绘图的代码：

auto realPlot = chart->AddPlot(vtkChart::LINE);
realPlot->SetInputData(table.Get(), 0, 1);

auto measuredPlot = chart->AddPlot(vtkChart::POINTS);
measuredPlot->SetInputData(table.Get(), 0, 2);

Answer 1

您可以设置轴标题的垂直和水平对齐方式。

e.g。

myVtkChart->GetAxis(0)->GetTitleProperties()->SetJustificationToLeft();

在你的情况下，调用

就足够了

xTitleProps->SetJustificationToRight();
yTitleProps->SetJustificationToLeft();

但似乎标题宽度没有缩放到轴长度。这意味着可能需要在标题字符串中添加一些空格以获得预期结果。

vtk chart - 如何在轴线末端绘制轴标签？

1 个答案: