Timeline for How to programmatically check if the number of shapes = number of table records?
Current License: CC BY-SA 3.0
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| May 23, 2017 at 12:39 | history | edited | CommunityBot |
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| Jul 3, 2013 at 17:35 | comment | added | whuber | Rows in a dBase file can be counted in two ways: (1) a record in the header stipulates how many rows it contains and (2) subtract the header length from the total file length (in bytes) and divide by the record length (equal to one plus the sum of lengths of the fields). It's usually a good idea to do both in case the file is physically truncated. Regardless, even when the counts match, the .shp and .dbf files are almost useless without the .shx file, which indexes into the .shp file. So a quick check of the count of .shx records might be better than reading the entire .shp file. | |
| Jul 1, 2013 at 18:02 | history | answered | Kirk Kuykendall | CC BY-SA 3.0 |