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Wrong results using arcgis "tabulate area" calcualtion

Question asked by yako79 on Feb 10, 2011
Latest reply on Mar 31, 2011 by geonetadmin
I have two polygon: one is neighborhood area, another is building footprint. both are polygon. I hope to calculate the total building footprint area in each neighborhood boudary.

I think I should use the Zonal-Tabulate area Function in Arctool box. But strange thing happen and i feel confused.

1. I have 259 neibourhood polygon. maxium FID=258
2. The calculated table has only 226 record. maxium Rowid=226

That means, I lose some information about neiborhood boundary when i use such a tool.

Why it happens? I have linked the tabulate table to my original neighorhood boundary polygon, yes, of course I fould some null record but from the map, there are some building locate in the boundary.

the attached has three picture taken from screen shot
1. tabulate table results
2. neighborhood polygon table
3. linked results.

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