Standalone table to Shapefile

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10-24-2022 02:04 PM
SarahRadel
Occasional Contributor

Good evening, I have ran into a brick wall trying to figure out how I can convert my standalone table to a shapefile.  I am working with NLCD data and have made some calculations in excel.  I imported my excel to table and I need for the standalone table to become a shapefile.  My files do not have x/y just coord.  I am hoping someone has the answer to help me convert this standalone table to a shapefile.  

 

Thank you so much in advance. 

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DanLee
by Esri Regular Contributor
Esri Regular Contributor

This table, USA NLCD Land Cover, is very different from the csv you shared.  This looks like a polygon feature class, probably converted from imagery/raster. It has the Shape field, showing "Polygon" type; and it has a Shape_Length field. Perhaps it has a Shape_Area field as well.

The CenterX and CenterY values you have are not long/lat but likely projected coordinates (in meters or ft). When you use Display XY (or actually the Table XY To Points tool), the default for Coordinate System is a GCS (geographic coordinate system), which takes the input xy values as long/lat (in decimal degrees). 

DanLee_0-1666656281343.png

You need to find out what projected coordinate values are in the CenterX and CenterY fields and specify that projected coordinate system (PCS) to run the Display XY tool.

 

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DanLee
by Esri Regular Contributor
Esri Regular Contributor

Yes, you can change your Map - Properties - Coordinate System.  Or you can project your data to a desired projection using the Project tool.

https://pro.arcgis.com/en/pro-app/latest/tool-reference/data-management/project.htm

 

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16 Replies
DanLee
by Esri Regular Contributor
Esri Regular Contributor

Are they supposed to be polygons? So you have lat/long of the vertices and polygon IDs? 

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SarahRadel
Occasional Contributor

They are supposed to be thematic

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DanLee
by Esri Regular Contributor
Esri Regular Contributor

Can you share a sample data or show a screenshot of the table?

 

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SarahRadel
Occasional Contributor

Absolutely!  Thank you so much for helping me.

 

 

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DanLee
by Esri Regular Contributor
Esri Regular Contributor

The csv contains only one row. I don't see any coordinates. Are the coordinates missing from the table? Without coordinates it's impossible to make it a shape.

DanLee_0-1666652182058.png

 

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SarahRadel
Occasional Contributor

I am using nlcd imagery

 

SarahRadel_0-1666652785588.png

 

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SarahRadel
Occasional Contributor

So, I copied the center x and center y for the last and added it to my table and then did a display x/y and it did not keep my data 😞

 

SarahRadel_0-1666653895475.png

 

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DanLee
by Esri Regular Contributor
Esri Regular Contributor

This table, USA NLCD Land Cover, is very different from the csv you shared.  This looks like a polygon feature class, probably converted from imagery/raster. It has the Shape field, showing "Polygon" type; and it has a Shape_Length field. Perhaps it has a Shape_Area field as well.

The CenterX and CenterY values you have are not long/lat but likely projected coordinates (in meters or ft). When you use Display XY (or actually the Table XY To Points tool), the default for Coordinate System is a GCS (geographic coordinate system), which takes the input xy values as long/lat (in decimal degrees). 

DanLee_0-1666656281343.png

You need to find out what projected coordinate values are in the CenterX and CenterY fields and specify that projected coordinate system (PCS) to run the Display XY tool.

 

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SarahRadel
Occasional Contributor

I see that it is projected in North America Albers Equal Area Conic in meters.  I'm going to give it try. Fingers crossed!

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