Top Posts Tagged with #attribute table

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Add Geometry: การเติมค่าพิกัด x,y ในแอตทริบิลต์เทเบิล

Add Geometry เครื่องมือสำหรับเติมข้อมูลด้าน geometry ในกรณีที่ Attribute Table ไม่มีพิกัด x, y สำหรับบล็อกนี้ เราจะทำงานในซอฟต์แวร์ QGIS Continue reading Untitled

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#Attribute Table #Geometry

when the attribute table field names are unique but the field aliases are identical like why?? that’s just confusing??

#arcgis #attribute table

http://support.esri.com/en/knowledgebase/techarticles/detail/40913

I always forget how to deal with nulls - must I treat it as a string or use the IS statement, then how do I need to reference the null value? Is it case sensitive? I found this post in the technical reports on the ESRI support website. It is nothing new, but a nice quick reference on how to check for null values in my attribute table. I'm using 10.1 and didn't have to specify to use a Arc 9.3 Python parser (but then again, that may be the default...) Anyway, it is a super simple definition to put into a Python Codeblock:

def IsMyValueNull(field): if field is None: return UpdatedValue else: return field

IsMyValueNull(!myField!)

#ArcMap #ArcGis10.1 #Python #Null #Attribute Table #Calculate Field