Fill in the following form to generate images from your own data files. Information
on the required data file format is available here,
including a sample data file. Detailed documentation is available here. The matrix2png home page is here. While that documentation is for the command line interface, most of it applies here.
Quick tips to avoid common file format problems:
- There is a sample file available
- The input files are tab delimited. Comma or
space-delimited files will not work.
- Missing values are OK, but rows that have missing values
at the end must contain extra "tabs": "ragged" rows are not
- Notice the 'upper left hand corner' string in the example file - all columns
including the example names have a heading. It does not matter what
you put in the corner. The parser uses the
header to figure out how many features you have, so if you skip the
corner string it will appear that you have extra data, resulting in an
- You can only have one column of descriptors, all other
data must be your numeric feature data. In other words, don"t
include extra columns in your file that are not part of the data or
the example labels. Extra columns will either result in an error
(most likely) or invalid results (if your extra columns look like
data). If you have multiple columns of non-numeric data in your file,
you should combine them into one column. Use spaces or other symbols to separate your "text fields".