Merging Multiple Feature Layers

[Anonymous]

I have been working on this for a week now. I have multiple layers, soil types, drainage basins, sidewalks, pavement, building pads, etc.... I want to run a drainage basin analysis for each type. Ideally I could use overlay merge, but I can only merge two layers. I thought I could then merge the merged layers with another, but I get a conflict regarding feature_id already used. Is there a way to combine a lot of layers into one so that I can extract the data into excel and analyze each kind of land use?

[Anonymous]

Hi,

you mean you have multiple data sources you want to merge?

" that I can extract the data into excel " - why dont you extract the data into excel for each layer/feature source? 

I did a quick test with three layers and merged layer1 and layer2 and then the result of that with layer3 - I didnt get any error message regarding feature_id.

Could you explain that a bit more? What do you mean by "conflict"?

Rob

[Anonymous]

Hi Rob,

The reason is that these layers all overlap. So I need basically unique fields for each variation of land type.  I realize that I can combine two overlays, which seems to create an attribute called "FeatID_1". When I add a third overlay, it creates "FeatID_2"... but on my fourth revision... I get the follow errors:

EXISTING_Identity_Identity.FeatId_1'; its class has objects Unsupport Schema modification; Cannot delete property 'Default:4270100_ST-DRAINAGE BASINS-EXISTING_Identity_Identity.FeatId_1'  Cannot delete a property 'Default:4270100_ST-DRAINAGE BASINS-EXISTING_Identity_Identity.FeatId_2'; its class has objects  Unsupport Schema modification; Cannot delete property 'Default:4270100_ST-DRAINAGE BASINS-EXISTING_Identity_Identity.FeatId_2'

Is there a way to get around this?

[parkr4st]

try mapimport each file with data attached and mapexport all of the cad data at once with object data to a SDF file.  Put the SDF in  amp and all of the data will end up in one table which can be exported to a .csv file. 

dave