module Biocaml_track: sig
.. end
Track files in UCSC Genome Browser format. The following
documentation assumes knowledge of concepts explained on the UCSC
Genome Browser's website. Basically, a track file is one of several
types of data (WIG, GFF, etc.), possibly preceded by comments, browser
lines, and a track line. This module allows only a single data track
within a file, although the UCSC specifies that multiple tracks may be
provided together.
Track lines define display attributes. They can be thought of as
lists of attribute-value pairs. For forward compatibility, this module
allows arbitrary attributes to be set. However, the following lists
known attributes and specifies restrictions on their values:
name
- string enclosed in double quotes if there are spaces;
recommended to use only alphanumeric characters and length less
than 15 characters but this is not enforced
description
- string enclosed in double quotes if there are
spaces; recommended to use only alphanumeric characters and
length less than 60 characters but this is not enforced
visibility
- "hide", "dense", "full", "pack", or "squish"; if
type=wiggle_0
then "hide", "dense", or "full"; can also use
integer value where 0 = "hide", 1 = "dense", 2 = "full", 3 =
"pack", 4 = "squish"
color
- "R,G,B" where each of R, G, and B are integers between
0 and 255
altColor
- "R,G,B" where each of R, G, and B are integers
between 0 and 255
itemRgb
- "On" is the only allowed value
useScore
- 0 or 1
group
- string
priority
- integer
autoScale
- "on" or "off"
gridDefault
- "on" or "off"
maxHeightPixels
- "max:default:min" where each of max,
default, and min are integers
graphType
- "bar" or "points"
viewLimits
- "lower:upper" where each of lower and upper are
integers
yLineMark
- floating point value
yLineOnOff
- "on" or "off"
windowingFunction
- "maximum", "mean", or "minimum"
smoothingWindow
- "off" or an integer between 2 and 16
db
- should be a valid UCSC assembly ID, but currently any
string is accepted
offset
- integer
url
- string
htmlUrl
- string
type
- "wiggle_0" is the only value currently supported,
leaving this attribute unset handles other track types
type
t = [ `browser of
[ `hide of [ `all ]
| `position of string * int * int
| `unknown of string ]
| `comment of string
| `track of (string * string) list ]
The type of the parser "track" lines.
type 'a
content = [ `content of 'a ]
The "content" lines of the files.
type
parse_error = [ `incomplete_input of Biocaml_pos.t * string list * string option
| `wrong_browser_position of Biocaml_pos.t * string
| `wrong_key_value_format of (string * string) list * string * string ]
The possible parsing errors.
module Transform: sig
.. end
Low-level transforms.