
TRACER: DEMONSTRATION FILES

Two demonstration bitmap files are included in this distribution.

LINE.BMP depicts a monochrome line plot. This can easily be traced with
the automatic option, using symbol widths and heights of zero.

POINTS.BMP depicts a coloured point plot. On the author's system
(800x600 video mode, image expanded to maximum) this graph was easily
traced with a symbol width of 6 px, height of 5 px and channel width of 24
(note: backtracking option was enabled). With a different video mode,
the settings will differ, but you should achieve results of similar quality.
Some of the results are compared with the source data in the listing below:

 True (x,y)        Tracer (x,y)
 data              data

0.1495 0.2328      0.1479  0.2340
0.1814 0.2066      0.1796  0.2082
0.2134 0.1726      0.2113  0.1731
0.2454 0.1393      0.2430  0.1406
0.2774 0.1243      0.2747  0.1250
0.3071 0.1330      0.3064  0.1337
0.3384 0.0958      0.3381  0.0973
0.3704 0.0760      0.3698  0.0777
0.4023 0.0653      0.4015  0.0664
0.4343 0.0562      0.4331  0.0570
0.4663 0.0602      0.4648  0.0607
0.4982 0.0483      0.4965  0.0488
0.5302 0.0483      0.5282  0.0488

The results were not too sensitive to the symbol size parameter.
On the other hand, with a channel width setting of 22 pixels, most of
the points were overlooked by Tracer.
