Convert ECSV to TXT

Understanding ecsv and txt file formats

ECSV (Enhanced Character Separated Values) is a specialized tabular data format, commonly used in scientific computing, especially in astronomy. It is an extension of the standard CSV format, supporting metadata and more complex data types. TXT files, on the other hand, are plain text files that can contain any kind of textual data, including tabular data in a simple, human-readable form.

Why convert ecsv to txt?

Converting ECSV to TXT is useful when you need to share data in a universally accessible format, or when you want to process the data with software that does not support ECSV. TXT files are compatible with almost all text editors and data processing tools.

How to convert ecsv to txt

The conversion process involves reading the ECSV file, extracting the tabular data, and saving it as a plain text file. The most reliable way to do this is by using the Astropy library in Python, which natively supports ECSV.

Step-by-step conversion using Astropy

1. Install Astropy if you haven't already: pip install astropy
2. Open a Python script or interactive shell.
3. Use the following code to convert your file:

from astropy.table import Table

table = Table.read('input.ecsv', format='ascii.ecsv')
table.write('output.txt', format='ascii', delimiter='\t')

This will save the ECSV data as a tab-delimited TXT file. You can change the delimiter parameter to comma or space if needed.

Alternative software and converters

• TOPCAT: A graphical tool for tabular data, supports ECSV and can export to TXT via File → Save Table.
• Pandas (Python): Read ECSV with pandas.read_csv() (with proper engine) and export to TXT with to_csv().

Tips for successful conversion

• Check the output TXT file for correct delimiter and encoding.
• Preserve metadata if needed by exporting it separately, as TXT files do not support metadata natively.