Contents
What do you need to know about a shapefile?
What is a shapefile? A shapefile is a simple, nontopological format for storing the geometric location and attribute information of geographic features. Geographic features in a shapefile can be represented by points, lines, or polygons (areas).
When does the field calculator stop on a corrupt shapefile?
The Field Calculator may stop on the corrupt record. To determine this, examine the attribute table of the corrupt shapefile. For example, if a shapefile with 1,000 records stops on the 750th record, either the 750th or 751st record may be corrupt. To delete the corrupt record, start an ArcMap edit session.
How to delete a corrupt shapefile in ArcMap?
For example, if a shapefile with 1,000 records stops on the 750th record, either the 750th or 751st record may be corrupt. To delete the corrupt record, start an ArcMap edit session. Copy and paste all records except the suspected bad records to a new shapefile.
Is there a way to remove spaces from shapefile?
Generally speaking, spaces in shapefile names work in ArcGIS for Desktop; however, for testing purposes, rename the shapefile so it does not contain spaces. Remove all index (spatial, attribute, and geocoding) projection and metadata files in Windows Explorer.
How to change the spatial extent of a shapefile?
Changing spatial extent of shapefile using ArcGIS Desktop? I want to change the extent of one of my shapefiles (lets call it A) to the same extent of another shapefile (B) but I can’t seem to do it. I tried using the ‘recalculate feature class extent’ and changing the processing extent under Environments from Default to shapefile B’s extent.
Can a shapefile contain both polygon and Polyline data?
A shapefile must not contain both polyline and polygon data, for example, the descriptions for a well (point), a river (polyline), and a lake (polygon) would be stored in three separate datasets. ^ a b ESRI (July 1998).
Which is an example of a map extent?
A map extent defines the geographic boundaries for displaying GIS information within a data frame. These boundaries contain top, bottom, left, and right coordinates. These are the edges of the map extent. For example, the image below shows a map centered on the U.S. state of Alabama.
How do I create a new shape file?
Add the new shape file you just created Bring up the Editor toolbar by choosing Customize-Toolbar-Editor or clicking on the editor icon In the Editor toolbar pull-down, chooseStart Editing. The file you want to edit is your new shapefile. A new window opens on the right appears called Create Features.
Where do I find a shapefile in ArcCatalog?
Below is an example of how shapefiles appear in ArcCatalog. You can also see the dBASE file (that may be associated with a shapefile). All files that have the file extensions .txt, .asc, .csv, or .tab appear in ArcCatalog as text files by default.
How are feature types converted to geometry types in shapefile?
All feature types in shapefiles convert to geometry types in the geodatabase. Unlike coverages, shapefile feature types are similar to the geometry types stored in a geodatabase, so conversion is more straightforward. For more information, see How data converts when importing. Each of the component files of a shapefile is limited to 2 GB each.
What do Shapefile File extensions do in ArcGIS?
Shapefile file extensions. Shapefiles are a simple, nontopological format for storing the geometric location and attribute information of geographic features. A shapefile is one of the spatial data formats that you can work with and edit in ArcGIS.
When was the shapefile format introduced in ArcView?
The shapefile format is a digital vector storage format for storing geometric location and associated attribute information. This format lacks the capacity to store topological information. The shapefile format was introduced with ArcView GIS version 2 in the early 1990s.
How big of a shapefile can I upload to data hub?
The Data Hub CLI will attempt to load the entire shapefile into memory before uploading it to the API. This will generally work for shapefiles up to 200-300MB, but you will start to see Node.js memory errors for shapefiles larger than that.
How are shapefiles compressed in a zip file?
All three files must be present in the same directory for them to be viewable. There may be additional files such as a .prj with the shapefile’s projection information. Commonly, shapefiles are compressed in a .zip file for transfer such as emailing as an attachment or via a web site download.
How are shapefiles stored in ArcCatalog workspace?
The workspace containing shapefiles may also contain dBASE tables, which can store additional attributes that can be joined to a shapefile’s features. Below is an example of how shapefiles appear in ArcCatalog. You can also see the dBASE file (that may be associated with a shapefile).