Canvas Interaction

This page describes the various methods of interacting with the canvas:

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Moving and Resizing Objects

Wherever appropriate, it is possible to move and resize objects using the mouse. The following table summarises the possible interactions:

Object Move Resize
Viewport Yes Yes
Title Vertical only Size controlled by Height and Expansion resources
Domain No No
Graph No No
Axes Only along axis No
Legend Yes Size controlled by Entry Height resource
Arrow Yes Yes
Note Yes Size controlled by Size and Expansion resources.
Logo Yes Yes

The object must first be selected. The simplest method to do this is by clicking on the object with the left mouse button. If this is difficult the object can also be selected in the Hierarchy Browser.

To move an object, place the mouse inside the selected object and then drag the mouse to the new position.

To resize an object, place the mouse over one of the resize handles and then drag the mouse to the new position for the handle.

It is possible to snap positions and sizes to a grid. The Snap Grid editor can be displayed from the Tools menu.

Move and Resize Viewport

Rotate 3D Viewport

  1. Select the viewport by clicking on it (or selecting it in the Hierarchy Browser).
  2. Click on the 3D rotate icon in the command toolbar: .
    A 3D workbox appears.
  3. Drag the workbox to its new position.

Moving Titles

The vertical position of a title can be adjusted in the same way as the viewport. Titles can be horizontally justified to the left, center or right. To set the horizontal justification double click on the title and change the resource in the Title Editor.

Move and Resize Logo

Logos are moved and resized in the same way as viewports.

Moving Notes

Notes can be freely moved to a new position.

Moving arrows

The whole arrow can be moved to a new position or it is also possible to drag just the arrow end.

Moving Legends

Legends can be freely moved to a new position.

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Zooming

To zoom into an area of the canvas:

  1. Select Zoom from the View Menu.
    The cursor changes to a +

  1. Drag the mouse over the desired area of the canvas.
The canvas is zoomed to the selected area.

To return to the full plot choose Zoom Reset from the View menu.

The View Menu contains options to undo the most recent zoom operation (Zoom Undo) and to undo all zoom operations (Zoom Reset).

You can also Zoom In or Zoom Out of the picture in small steps. The size of this step is controlled by the Zoom Factor option.

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Data Probing

It is possible to "probe" a graph to see the data value corresponding to a selected point

To probe a graph:

  1. Select the graph by clicking on it or be selecting it in the Hierarchy Browser.
  2. Whilst holding down the [Shift] key, click on a point in the graph.

    The Data Probing Dialog appears

    The dialog shows the co-ordinates of the selected point and the value of the closest data point.

  3. Repeat Step 2 for other data points.

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