WebLogo 3: Sequence Logos Redrawn

WebLogo is software designed to make the generation of sequence logos easy and painless. A sequence logo is a graphical representation of an amino acid or nucleic acid multiple sequence alignment. Each logo consists of stacks of symbols, one stack for each position in the sequence. The overall height of the stack indicates the sequence conservation at that position, while the height of symbols within the stack indicates the relative frequency of each amino or nucleic acid at that position. In general, a sequence logo provides a richer and more precise description of, for example, a binding site, than would a consensus sequence.

WebLogo features a web interface (http://weblogo.threeplusone.com), and a command line interface provides more options and control (http://weblogo.threeplusone.com/manual.html#CLI). These pages document the API.

The main WebLogo webserver is located at http://weblogo.threeplusone.com

Please consult the manual for installation instructions and more information: (Also located in the weblogolib/htdocs subdirectory.) http://weblogo.threeplusone.com/manual.html

For help on the command line interface run

weblogo --help

To build a simple logo run

weblogo  < cap.fa > logo0.eps

To run as a standalone webserver at localhost:8080

weblogo --serve

Distribution and Modification

This package is distributed under the MIT Open Source License. Please see the LICENSE.txt file for details on copyright and licensing. The WebLogo source code can be downloaded from https://github.com/WebLogo/weblogo

WebLogo requires Python 3.6 or 3.7. Generating logos in PDF or bitmap graphics formats require that the ghostscript program ‘gs’ be installed. Scalable Vector Graphics (SVG) format also requires the program ‘pdf2svg’.