*! version 1.0 16sep2015

Title

Scheme description: tfl graph scheme, based on Transport for London's corporate colour pallette.

Syntax

To use the tfl scheme, you might specify it as an option in your graph command

. graph
...,
...
scheme(tfl)

Alternatively, set the scheme before running your graph command

. set
scheme
tfl
[,
permanently]

See [G-3] scheme_option and [G-2] set scheme.

Description

Schemes determine the overall look of a graph; see
[G-4] schemes intro.

The tfl scheme uses Transport for London's corporate colour pallette
applied to Stata graphs. It is an easily recognised, vibrant colour scheme. The
scheme was written for those who wish to use something other than the standard schemes
and colours in Stata.

The tfl scheme changes some of the quirks in Stata's base schemes and is
minimal in style. Colours come from TFL's RGB specification of corporate colours,
available from tfl.gov.uk. Dots in scatterplots are hollow by default. The height-to-width
ratio is 4:5 by default but can be changed using xsize(#) and ysize(#).

Graph schemes are skeletons, giving default specfications for general graphs;
any specific changes required can still be made within graph commands.

Colours

The tfl scheme includes eight non-standard colours named tflblue, tflbrown,
tflgreen, tflgrey, tflorange, tflpurple, tflred and tflyellow.
Users can refer to these colours as they would to Stata's base colours,
regardless of the graph scheme being used.

Note

There are elements to TFL's branding beyond colour, but this graph scheme
does not intend to go beyond colour and some author-preferred options for graphs.

Author

Tim Morris

MRC Clinical Trials Unit at UCL, London, UK.

Email: tim.morris@ucl.ac.uk

Twitter: @tmorris_mrc