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Calculating acreage as a percentage in ArcPy
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I am struggling to calculate the acreage as a percentage in Calculate Field Management, but I am getting this error message:
"ValueError: could not convert string to float! BufferAcreage!
arcpy.CalculateField_management(fc, "BuffAcreage", "!shape.area@acres!", "PYTHON", "")
arcpy.CalculateField_management(fc, "BuffPct", float("!BufferAcreage!")/float("!Acres_Whole!") * 100, "PYTHON", "")
The initial line of code works perfectly, but it is the second line of code when I am calculating the acreage percentage that I run into the error.
It will not calculate the field because for some reason it is telling me that I am treating the values in these attributes as strings and will not convert them to floats.
It must be done with the arcpy.CalculateField_management(). I can not use an alternative python scripting method because the assignment directions stipulated that I must use the Calculate Field tool in my script. Any suggestions?
arcpy field-calculator calculate-values
edited 7 mins ago
Taras
2,3112727
asked 11 mins ago
tjwashin234tjwashin234
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I am struggling to calculate the acreage as a percentage in Calculate Field Management, but I am getting this error message:
"ValueError: could not convert string to float! BufferAcreage!
arcpy.CalculateField_management(fc, "BuffAcreage", "!shape.area@acres!", "PYTHON", "")
arcpy.CalculateField_management(fc, "BuffPct", float("!BufferAcreage!")/float("!Acres_Whole!") * 100, "PYTHON", "")
The initial line of code works perfectly, but it is the second line of code when I am calculating the acreage percentage that I run into the error.
It will not calculate the field because for some reason it is telling me that I am treating the values in these attributes as strings and will not convert them to floats.
It must be done with the arcpy.CalculateField_management(). I can not use an alternative python scripting method because the assignment directions stipulated that I must use the Calculate Field tool in my script. Any suggestions?
arcpy field-calculator calculate-values
edited 7 mins ago
Taras
2,3112727
asked 11 mins ago
tjwashin234tjwashin234
11
New contributor
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
I am struggling to calculate the acreage as a percentage in Calculate Field Management, but I am getting this error message:
"ValueError: could not convert string to float! BufferAcreage!
arcpy.CalculateField_management(fc, "BuffAcreage", "!shape.area@acres!", "PYTHON", "")
arcpy.CalculateField_management(fc, "BuffPct", float("!BufferAcreage!")/float("!Acres_Whole!") * 100, "PYTHON", "")
The initial line of code works perfectly, but it is the second line of code when I am calculating the acreage percentage that I run into the error.
It will not calculate the field because for some reason it is telling me that I am treating the values in these attributes as strings and will not convert them to floats.
It must be done with the arcpy.CalculateField_management(). I can not use an alternative python scripting method because the assignment directions stipulated that I must use the Calculate Field tool in my script. Any suggestions?
arcpy field-calculator calculate-values
edited 7 mins ago
Taras
2,3112727
asked 11 mins ago
tjwashin234tjwashin234
11
New contributor
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I am struggling to calculate the acreage as a percentage in Calculate Field Management, but I am getting this error message:
"ValueError: could not convert string to float! BufferAcreage!
arcpy.CalculateField_management(fc, "BuffAcreage", "!shape.area@acres!", "PYTHON", "")
arcpy.CalculateField_management(fc, "BuffPct", float("!BufferAcreage!")/float("!Acres_Whole!") * 100, "PYTHON", "")
The initial line of code works perfectly, but it is the second line of code when I am calculating the acreage percentage that I run into the error.
It will not calculate the field because for some reason it is telling me that I am treating the values in these attributes as strings and will not convert them to floats.
It must be done with the arcpy.CalculateField_management(). I can not use an alternative python scripting method because the assignment directions stipulated that I must use the Calculate Field tool in my script. Any suggestions?
arcpy field-calculator calculate-values
arcpy field-calculator calculate-values
edited 7 mins ago
Taras
2,3112727
asked 11 mins ago
tjwashin234tjwashin234
11
New contributor
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 mins ago
Taras
2,3112727
asked 11 mins ago
tjwashin234tjwashin234
11
New contributor
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 7 mins ago
Taras
2,3112727
edited 7 mins ago
Taras
2,3112727
edited 7 mins ago
Taras
2,3112727
2,3112727
asked 11 mins ago
tjwashin234tjwashin234
11
New contributor
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 11 mins ago
tjwashin234tjwashin234
11
asked 11 mins ago
tjwashin234tjwashin234
11
11
New contributor
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
tjwashin234 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
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