How to change the size of the label on the vtkScalarBarActor?

Support
1

Hi all!

I would like to change the size of the label on the vtkScalarBarActor.

image
image750×522 189 KB

The label size is too big, so I tried to change as below:
vtkNew m_vtkScalarBar;
m_vtkScalarBar->GetLabelTextProperty()->SetFontSize(100);

But it is not effective.

How to change the size of the label?

Thank you :slight_smile:

2

Hi, Kim,

What do you get if you do m_vtkScalarBar->GetLabelTextProperty()->SetFontSize(1);?

cheers,

Paulo

3

Hi Paulo Carvalho.

There are the same.

그림1
그림1762×422 91.4 KB

My code is:
vtkNew m_vtkScalarBar;

m_vtkScalarBar->SetLookupTable(lut);
m_vtkScalarBar->SetNumberOfLabels(6);
m_vtkScalarBar->SetBarRatio(0.1);
m_vtkScalarBar->SetHeight(0.3);
m_vtkScalarBar->SetTextPad(10);
m_vtkScalarBar->SetTextPositionToPrecedeScalarBar();
m_vtkScalarBar->GetLabelTextProperty()->SetFontSize(50);

4

Hello, Kim,

You can try ParaView’s custom scalar bar. Here is a derived class from it: https://github.com/PauloCarvalhoRJ/gammaray/tree/AutoVarFit_improvements/imagejockey/paraviewscalarbar . The header that defines the class is vtkParaViewScalarBar.h. It is still in a branch, but in the near future it will be merged into master.

cheers,

Paulo