_dta: 1. by Jean Roth , jroth@nber.org , 2012-10-05 2. by Jean Roth , jroth@nber.org , 2 Sep 2014 3. Census 2000 SF1 Summary Level 150 4. Unique identifier is tract blkgrp 5. Distances between Blkgrp that are within 50 miles obs: 618,564,962 vars: 5 2 Sep 2014 01:22 size:19,794,078,784 (_dta has notes) --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- storage display value variable name type format label variable label --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- tract1 str11 %11s blkgrp1 str1 %9s State FIPS + County FIPS + Tract + Block Group mi_to_blkgrp double %10.0g Distance between blkgrps that are within 50 miles tract2 str11 %11s blkgrp2 str1 %9s State FIPS + County FIPS + Tract + Block Group --------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- Sorted by: tract1 blkgrp1 mi_to_blkgrp tract2 blkgrp2