Store Attribute on Feature Creation

Discussion created by schnick87 on Feb 7, 2012
Latest reply on Feb 8, 2012 by schnick87
Dear Community,

I'm quite new to ArcGIS, Python and the whole things used in there.
Currently, I'm doing an internship and thyerefore, I need to use ArcGIS to label some street objects.

I created a 3D-Point-Shape-File.
Afterwards I create a point with a plugin that adds x, y and z data to the point.
Afterwards I adjust the z-Data so it fits to a certain object above ground.
The old z-data gives the height over sea of the groundplane.
To verify the height of the object above the groundplane, I want to calculate the difference between the old and the current z-value.

This operation should be automatically and therefore I'm looking for a signal or an option which tells me, that I just added a point to the shapefile.

Because I'm really new to this, I only have a bad solution for this:

Making a point which contains Z and M values and store while manually increasing the z-value the old z-value to the M-Value.

What can I also do? How can I access the signal "on feature creation"?
Is there a way to automatically change field values without opening the field manager after each new feature?

Thank you so much!