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Creating SASCreating SAS®® Data Sets Data Sets from HTML Table Definitionsfrom HTML Table DefinitionsRick Langston, SAS Institute Inc.
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What we want to do
Read HTML files
Find table definitions
Convert each table to a SAS data set
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Small table examples
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Start at the end!
%readtable macro
assume we know start, end, nrows, ncols
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RECFM=F LRECL=n means one record
MISSOVER allows us to avoid EOF conditions
C will contain our current location
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<TR <tr <TABLE <table
</tr </TR if CLOSETAGS is Y
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<TR or <tr and </TR or </tr if CLOSETAGS=Y
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<td><small>12 & over</small></td>
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All variables currently are character
Let’s see if we can make some into numeric
Some also might be dates
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
C: character field N: numeric D: date
blank: drop the variable – all blank!
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?? used to avoid warning messages
ANYDTDTE tries reading arbitrary text as dates
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
now show %readhtml
will determine start/end/nrows/ncols
will invoke %readtable for each table
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
We need a local copy of the file
We need to know its size for the LRECL= option
SYMPUTX is used for a numeric value
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
TABLETAG is TABLE or table
CLOSETAGS Y or N
NOBS is maximum number of rows
NTABLES is number of table definitions
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
INPUT @(TRIM(TAG)) usage
MISSOVER prevents EOF
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Writing SAS code to a temp file
Using CATX to construct %READTABLE(...);
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration. Copyright © 2008, SAS Institute Inc. All rights reserved. SAS and all other SAS Institute Inc. product or service names are registered trademarks or trademarks of SAS Institute Inc. in the USA and other countries. ® indicates USA registration.
