2.26 Mask or Change Data in Contour

Summary

This Mask or Change Data in Contour app can be used to mask or change data within a region of interest (ROI) in a contour plot. The ROI can be rectangle, ellipse or free hand drawn shape.

Tutorial

  1. With a worksheet window activated, select Data: Import Form File: Single ASCII in the menu to import the sample file <Origin Program Folder>\Samples\Curve Fitting\Multiple Linear Regression.dat with the default import settings.
  2. Highlight whole worksheet, select Plot: Contour: Contour to plot Contour with default setting.
  3. Use Mini Toolbar button to hide the Contour Line.
    Mask or Change Data in Contour 01.png
  4. Activate Contour graph window and then click on Mask or Change Data in Contour icon Mask or Change Data in Contour icon.png from the Apps panel.
  5. The Mask or Change Data in Contour dialog will pop-up, and a region of interest object (ROI) is added on the graph.
    Mask or Change Data in Contour 02.png
  6. You can select Ellipse, 'Rectangle or Free Hand shape for the ROI object. Here, we keep to use Ellipse and then drag the object cover the data we hope to make or change.
    Mask or Change Data in Contour 03.png
  7. Select Specific Value as Data Options and set 1026 as Specific Value. Click Apply button.
    Mask or Change Data in Contour 04.png
  8. Close the dialog. In the Contour graph, the specified value replaced the covered data.
    Mask or Change Data in Contour 05.png