The QtiPlot Handbook
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# The Data Menu

This menu is active only when a plot is selected.

Data -> Disable tools

  When you are using a command which modify the pointer such as the Data Reader, this command can be used to exit this special mode, and go back to the normal pointer behaviour.

Data -> Zoom in (Ctrl-+)

  Switches the active plot layer to the zoom mode. The mouse cursor shape changes to a magnifying lens only inside the active plot canvas. You can select a window in the current plot which will be used as the new plotting window.

Data -> Zoom out (Ctrl--)

  This command cancel the previous zooming, a history of the zoom is kept so that you can do multiple zoom out commands.

Data -> Rescale to Show All (Ctrl-Shift-R)

  Rescale the active plot layer after a zoom operation.

Data -> Data Reader (Ctrl-D)

  Shows a red cross cursor and opens the Data Display toolbar giving easy and fast access to the values of the data points. You can select data points by moving the cursor with the Left and Right arrow keys or faster by clicking on them with the mouse. You can navigate through the curves on the plot layer using the Up and Down arrow keys. The [Home] key makes the data reader jump to the beginning of the selected curve and the [End] key to its end point.

Data -> Select Data Range (Alt-S)

  Shows two rectangular cursors that can be used for selecting the data range when performing analysis operations. The mouse cursor shape changes to a rectangular target only inside the active plot canvas. The active cursor is red, the other is black.You can move the active cursor with the arrows keys while keeping the Ctrl key pressed or faster by clicking on a curve point. You can change the active cursor using the Left and Right arrow keys. You can navigate through the curves on the plot layer using the Up and Down arrow keys. When this tool is active you can easily copy, paste or cut the whole selected data range, using the well-known shortcuts: Ctrl+C, Ctrl+V and Ctrl+X, respectively.

Data -> Screen Reader

  Opens the Data Display toolbar and changes the mouse cursor shape to a small cross target. By keeping the left button pressed and moving the mouse you can view the coordinates of the cursor with respect to the axes of the active plot layer.

Data -> Move Data points (Ctrl-Alt-M)

  Allows you to modify the position of data points in the active plot layer by simple drag-and-drop. It opens the Data Display toolbar, for a better visualisation of the new coordinates. The changes you make automatically modify the data into the corresponding tables and all the plots depending on those data sets.

Data -> Remove Bad Data Points (Alt-B)

  Allows you to remove data points from the active plot layer by double-clicking on them. The coordinates of the points selected for removal are shown in the Data Display toolbar. The changes you make automatically modify the data into the corresponding tables and all the plots depending on those data sets.

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The Plot 3D menu | Up | The Analysis Menu