PyTartan Convert tartan threadcount specification to SVG Tartans (Scottish plaids) are specified in terms of a "threadcount", which indicate the colors of the stripes and their order and thickness. See http://en.wikipedia.org/wiki/Tartan#Construction and/or http://www.tartanregister.gov.uk/guidance.html#20 for some information. Usage: tartan.py [-a] [-u unit] [-r reps] [-d divisor] [-R] [sett info...] Options: -a: Sett is asymmetrical. The pattern is simply repeated over and over, not reflected about the pivots as usual. -u: Make the width of the slantwise stripes representing the threads equal to _unit_. Larger numbers (like 5-10) will result in larger images with more "hound's-tooth" look to them. Not really necessary since SVGs are scalable. Default: 2 -r: Repeat the pattern _reps_ times horizontally and vertically. Default: 2 -d: Divide all the widths by _divisor_, e.g. since threadcounts are supposed to be all even numbers, many are given essentially multiplied by two. Also not all that necessary since SVGs are scalable. Default: 1 -R: *Ignore* the threadcount on the command line, and instead read in standard input. The input is taken to be of the form that www.tartanregister.gov.uk sends back in email when you request a threadcount. The program will find the "Threadcount:" line for the actual threadcount, and will parse the "Pallett:" line for assigning the precise RBG colors to the thread colors. All the rest of the input is ignored. The threadcount is expected to consist of one or more specifiers of color and width. Color is usually indicated by one or two letters (sometimes more), and then comes the width in numbers. So W6 means a white stripe six threads wide, and B18 means a blue stripe 18 threads wide. There may be spaces between the strips, but there should not be whitespace between a color and its number. Standard color-abbreviations are understood, among them: W: White K: Black R: Red G: Green B: Blue Y: Yellow N: Grey T: Tan DB: Dark Blue LG: Light Green You can also specify the color precisely by using the form (#rrggbb) as the color. The parentheses are mandatory, as is the pound sign, and the six hex digits after represent, in pairs, the red, green, and blue components of the color. As usual, there must be no space between the closing paren and the count number. The official Tartan Registry accompanies each threadcount with a pallette which specifies the shade (in #rrggbb form) for each color abbreviation used; these are processed by the program using the (#rrggbb) form for the colors, internally. Threadcounts are usually symmetrical. That is, reading across (for example), you should find stripe#1, stripe#2, ... , stripe#(n-1), stripe#n, which would then be followed by stripe#(n-1), stripe#(n-2),...,stripe#2, stripe#1, stripe#2, stripe#3, etc. That is, the sequence is reversed for each repeat. Note that the end ("pivot") stripes are not generally repeated. If you use the -a option, the threadcount is used asymmetrically, repeating from stripe#1 to stripe#n over and over with no reversals. Asymmetrical tartans exist in the Tartan Registry, but as yet I have not seen that they indicate them at all in the threadcounts they send back. To have different counts for warp vs weft, separate them with the '|' character (which will have to be escaped from the shell!), e.g. tartan.py -r 4 'B20 W30 | W30 R16' Acknowledgement: Inspiration for this program was from xtartan by Jim McBeath, as modified by Joseph Shelby.