[ Layout options | Graph tab | Lines tab | Axes tab | Symbols tab | Colours tab ]
[ Full index ]
[ Layout options | Graph tab | Lines tab | Axes tab | Symbols tab | Colours tab ]
[ Full index ]
When a new data set is created or loaded, it will inherit settings for any graph attached to it from the global choices settings. The graph display options window allows these settings to be overridden for an individual graph.
At the bottom of the graph options window are two buttons.
The options that can be changed are grouped under tabs in the window.
The groups of settings are as follows.
These are described in detail below.
This section contains settings for the graph display, in general.
If the option Custom is selected, then the x and y extents can be entered in the writable boxes Custom width and Custom height.
The images below show a graph with and without a background colour.
When using line widths of a fraction of a pt, the VDU display can sometimes look a little uneven, particularly with lines at an angle to the horizontal/vertical. In some cases, lines can completely disappear. This is where the option Use thin lines on vdu comes in. If this is selected, then the screen display will use 1 pixel wide lines for all the lines on the graph, but when saving draw files and printing will revert to the actual line widths as set in this dialogue. If this is not set, then GraphDraw will make the assumption that lines of less than about 0.80 pt should be displayed on screen as 'thin' lines, and thicker lines will be displayed at their configured thickness. (Why 0.8 pt? There are 72 pt to the inch, and the vdu display is nominally 90 pixels to the inch. Thus 1 px is about 0.8 pt).
The images below show these three options.
The images below show a range of these effects from no box to a box with all options active.
The images below show this option off and on.
This tab allows the type of symbols used on the graph to be defined. The type, or shape, of the symbol, and its size can all be set. The type of symbol (e.g. square, circle) is chosen from the popup menu. The size (specified in OS units) can be set using the bump icons.
The line width applies to symbols that are not filled shapes, but are drawn as lines, e.g. a cross or plus symbol. In this case the line width in pts used to draw the symbol can be set using the bump icons.
The colour used for a number of graph components can be independently chosen. The colours that can be set are
In each case, clicking the menu button to the right of the colour patch showing the current colour will raise a standard colour picker dialogue, which is used to select a new colour.
These pages are best viewed in a CSS compliant browser. For RISC OS, Netsurf would be the browser of choice.
Graph window
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Graph annotation
GraphDraw is © Chris Johnson, 2014
Email:chris@chris-johnson.org.uk
This document last modified on 15th August 2015