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â– Space-delimited format (SDF)
â– Drawing interchange format (DXF)
The CDF format produces a file containing one record for each block reference
in a drawing. A comma separates the fields of each record, and single quotation
marks enclose the character fields. Some database applications can read this
format directly.
The SDF format also produces a file containing one record for each block
reference in a drawing. The fields of each record have a fixed width and employ
neither field separators nor character-string delimiters. The dBASE III Copy .
. . SDF operation also produces SDI-format files. The Append From... SDF
operation can read a file in dBASE IV format, which user programs written in
FORTRAN can easily process.
DXF produces a subset of the drawing interchange format containing only
block reference, attribute, and end-of-sequence objects. This option requires
no attribute extraction template. The file extension .dxx distinguishes an
extraction file in DXF format from normal DXF files.
Use the Attribute Extraction File
The attribute extraction file lists values and other information for the attribute
tags you specified in the template file.
If you specified a CDF format using the sample template, the output might
appear as follows:
'DESK', 120.0, 49.5, 'ACME INDUST.', '51-793W', 379.95
'CHAIR', 122.0, 47.0, 'ACME INDUST.', '34-902A', 199.95
'DESK', -77.2, 40.0, 'TOP DRAWER INC.', 'X-52-44',249.95
By default, character fields are enclosed with single quotes (apostrophes). The
default field delimiter is a comma. The following two template records can be
used to override these defaults:
C:QUOTE c (Character string delimiter)
C:DELIM c (Field delimiter)
The first nonblank character following the C:QUOTE or C:DELIM field name
becomes the respective delimiter character. For example, if you want to enclose
character strings with double quotes, include the following line in your
attribute extraction template file:
C:QUOTE "
The quote delimiter must not be set to a character that can appear in a
character field. Similarly, the field delimiter must not be set to a character
that can appear in a numeric field.
Create and Modify Blocks | 331
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