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#### A.4.4.1 Lines Style Editor

The default plotting style for the stacked lines plot is a simple black line for each graph. Since the plots typically do not overlap each other, this is in many cases suitable as it stands. However, you can configure the plotting style so that the points are plotted with markers as well as or instead of lines, and change the colours, marker shapes, line styles etc. The style for each row subset is displayed in a button to the right of its name in the bottom right of the plotting window. If you click this button the following dialogue will pop up which entables you to configure the plotting style.

Stacked Line Plot Style Editor

The Legend box defines how the selected set will be identified in the legend which appears alongside the plot (though the legend will only be visible if Show Legend () is on):

Icon
  Displays the icon which will be shown to identify the points in the selected set. Its appearance depends on the selections you make in the rest of this dialogue window.
Label
  Gives the name written in the legend to label the subset. By default this is derived from the Row Subset's name and, if it's not part of the main dataset, the name of the dataset's tab. You can type in a new value to change what is written in the legend.
Hide Legend
  If this checkbox is selected, then no entry for the selected set will appear in the legend.

The Display box defines how the markers plotted for each data point will appear:

Colour
  Choose the colour in which the lines and/or markers will be plotted.
Line/Markers
  Select from the radio buttons whether you want just lines between the data points, or markers at each point, or both.
Error Bars
  If error bars are active for this plot, allows you to select the way they will appear. The options which can be selected here will depend on whether X and/or Y erors are in use.

The Line box defines how the lines joining the points will look. These controls will only be active if the Display selection is Line or Both.

Thickness
  Determines line thickness.
Dash
  Determines line dash pattern.

The Markers box defines how markers at the data points will look. These controls will only be active if the Display selection is Markers or Both.

Size
  Determines the size of the markers in pixels. If a size of zero is chosen then the shape doesn't matter, the points will be plotted as single pixels.
Shape
  Determines the shape of the markers from a selection such as open or filled circles, squares, crosses etc.

Any changes you make in this window are reflected in the plot straight away. If you click the OK button at the bottom, the window will disappear and the changes remain. If you click Cancel the window will disappear and any changes you made will be discarded.

You can also change all the plotting styles at once by using the Line Style menu in the stacked lines plot window. Here you can select a standard group of styles (e.g. dashed lines, coloured lines) for the plotted sets. Similarly, error styles can be changed all at once using the Error Style menu.

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TOPCAT - Tool for OPerations on Catalogues And Tables
Starlink User Note253
TOPCAT web page: http://www.starlink.ac.uk/topcat/
Author email: m.b.taylor@bristol.ac.uk
Mailing list: topcat-user@bristol.ac.uk