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I have an attribute table in ArcGIS (it's large - around 300,000 elements). I've selected some rows of the table using 'Select by attributes' and I want to set the value of a field for all of those rows.

How should I go about doing this? I'm hoping there will be a nice, easy, GUI-based way - as I'm teaching someone with very little GIS experience.

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up vote 6 down vote accepted

How about opening the attribute table, change to the selected records then right-click on the field you want to change. Choose Calculate Field and type the value you want all of the selected features to have.

I hope this helps.

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For fields that are string/text make sure you surround your text with "", e.g. "string" within field calculator. –  artwork21 May 10 '11 at 16:02
    
Ahh of course - I didn't quite think laterally enough... Cheers guys. –  robintw May 10 '11 at 16:08
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