Linked Questions

-2
votes
1answer
2k views

What are shapefiles, layer files, and databases and what are their relationships? [duplicate]

What exactly is a shapefile in ArcGIS, and how is it related to a database or a layer file. What are the differences between these 3 things?
1
vote
1answer
113 views

Simple answer: Difference between a dataset and a map [duplicate]

For a project I am involved in, we are creating a dataset that will show the extents of natural areas and provide an estimate of the ecological integrity of that area. We are calling it an "Ecological ...
13
votes
4answers
24k views

What is layer file (*.lyr) in ArcGIS Desktop?

My organization uses *.lyr files consistently as a means for our users to view the data and build their mxds. It works great for our purposes, but we have run into an issue where we don't think the ...
9
votes
3answers
9k views

Why is it important to use feature layers in ModelBuilder?

I am trying to understand creation of a geoprocess with ModelBuilder, but I don't know why it's important to use feature layers instead of feature classes when creating a geoprocess with ModelBuilder. ...
10
votes
3answers
6k views

Does ArcPy have a spatial search function for geometry?

My problem: Using ArcPy I want to loop over buffers and select geometry_features inside each buffer and do something (update) only the objects found within that specific buffer. The code below ...
4
votes
3answers
2k views

Intermediate Data in Python Code

Is there a way to incorporate intermediate data (so that I do not have to select an output save location) in a python script that I turned into a tool? import arcpy, os from arcpy import env env....
3
votes
3answers
6k views

Why does ArcMap drag and drop report “one or more dropped items invalid”?

I've noticed that I can drag and drop data sets into a custom tool within ArcCatalog 10.1, but if I launch the tool in ArcMap and try to drag and drop layers already in my TOC, I get an error one ...
3
votes
2answers
2k views

Using Select Layer By Attribute in for loop with ArcPy?

I'm trying to iterate through a feature class and select each feature one by one by using the OBJECTID field. When I use a single value, the SelectLayerByAttribute works, but how do I compare the ...
0
votes
1answer
1k views

Is there a Select Feature by Attribute tool for Feature Classes when performing selection ModelBuilder?

I want to perform a Select by Attribute selection on a Feature Class in ModelBuilder, but I know the Select by Attribute tool does not work in this situation. I need to perform this function as I ...
1
vote
2answers
728 views

make feature layer of shapefile

I'm trying to use polygons in arcpy. The polygons are stored in a shapefile. When running the following: import arcpy gdb = 'path//to//gbd' inshape = os.path.join(folder,'Ameland_1968.shp') poly = ...
1
vote
1answer
2k views

Creating new layer from selection in ArcPy? [closed]

arcpy.SelectLayerByAttribute_management() helps in selection but I am unable to create a new layer from the selection arcpy.MakeFeatureLayer_management() for generating new layer file but it gives an ...
0
votes
1answer
1k views

How to extract list of layers in MXD using ArcGIS Desktop 9.3.1 and Python 2.5?

I have been trying to extract a list of all the layers in my mxd (Arc9.3.1), using Python 2.5. If I could have the source of the layers too that would be even better... But as long as I can get a list ...
2
votes
2answers
801 views

Downloading data from ArcGIS Online?

I am new to GIS. I am done making a map, using ArcGIS Online webmap. I have successfully installed QGIS 2.14, now I want to retrieve the map and layers from ArcGIS to be used in QGIS. What steps ...
4
votes
1answer
1k views

Multiple features within a single feature layer with different geometries

I am working with ArcObjects SDK 10 for .NET. There is already a geospatial database at my disposal. So I am trying to map its spatial context to ArcObjects context. We have objects like state, ...
1
vote
0answers
440 views

Why do I get different results running a script in PyWin and loading it to the Python shell in ArcGIS? [closed]

I've been trying to teach myself Python scripting for ArcGIS and have gotten frustrated on multiple occasions when I try to debug my script endlessly, only to later find out that it actually works ...

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