Files with the .bf extension are often associated with BEAST, which is software for Bayesian estimation of species trees and other evolutionary parameters from molecular data. The .bf extension typically indicates a BEAST input file written in the BEAST XML format or could relate to other tools requiring specific configuration files.
Before analysis, data usually needs "cleaning." The script typically filters out:
popdata.bf is a national open data initiative for Burkina Faso that centralizes demographic, population, and related statistics to support policymakers, researchers, NGOs, and the public. This post explains what popdata.bf offers, why it matters, and how to use it. popdata.bf
import struct
def read_popdata(filename): records = [] with open(filename, 'rb') as f: magic, version, num_records = struct.unpack('<4sHH', f.read(8)) if magic != b'POPB': raise ValueError("Not a valid popdata.bf file") for _ in range(num_records): rec = struct.unpack('<IIQQQfff', f.read(40)) records.append( 'region_id': rec[0], 'year': rec[1], 'population': rec[2], 'male': rec[3], 'female': rec[4], 'median_age': rec[5], 'area_km2': rec[6], 'density': rec[7] ) return records
Because .bf files are often custom-written by researchers, they are not "out of the box" software. You will likely need to edit them.
How to Edit: Right-click the file and select Edit or Open with Notepad. Files with the
Common Variables to Change: Look for lines at the top of the script that look like this:
# Example content inside popdata.bf
input_file <- "mydata.vcf" # CHANGE THIS to your filename
pop_map <- "population_map.txt" # CHANGE THIS to your population key
maf_threshold <- 0.05 # Filter setting
If the script crashes, it is usually because it cannot find the input file specified in these variables. Because