Reclassifying shapefile using ArcGIS Desktop?
So I have a shapefile consisting of 1000 polygon records. I would want to reclassify one field "Value" into a new blank field named "New Value". As an example:
record = 1; value = 25.6
record = 2; value = 35.4
record = 3; value = 14.1
record = 4; value = 44.6
record = 5; value = 8.7
record = 6; value = 2.1
record = 7; value = 10.4
record = 8; value = 18.3
record = 9; value = 30.9
record = 10; value = 28.5
I want all records with records from 0 to 10 as new field with label "rice". Then 11 to 15 as "wheat", 15 to 25 as "corn", and the remaining unclassified records as "others".
To do this with ArcGIS Desktop, do I use the Field Calculator?
arcgis-desktop shapefile vector
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
asked Jan 28 at 16:07
GISnewGISnew
827
add a comment |
So I have a shapefile consisting of 1000 polygon records. I would want to reclassify one field "Value" into a new blank field named "New Value". As an example:
record = 1; value = 25.6
record = 2; value = 35.4
record = 3; value = 14.1
record = 4; value = 44.6
record = 5; value = 8.7
record = 6; value = 2.1
record = 7; value = 10.4
record = 8; value = 18.3
record = 9; value = 30.9
record = 10; value = 28.5
I want all records with records from 0 to 10 as new field with label "rice". Then 11 to 15 as "wheat", 15 to 25 as "corn", and the remaining unclassified records as "others".
To do this with ArcGIS Desktop, do I use the Field Calculator?
arcgis-desktop shapefile vector
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
asked Jan 28 at 16:07
GISnewGISnew
827
add a comment |
So I have a shapefile consisting of 1000 polygon records. I would want to reclassify one field "Value" into a new blank field named "New Value". As an example:
record = 1; value = 25.6
record = 2; value = 35.4
record = 3; value = 14.1
record = 4; value = 44.6
record = 5; value = 8.7
record = 6; value = 2.1
record = 7; value = 10.4
record = 8; value = 18.3
record = 9; value = 30.9
record = 10; value = 28.5
I want all records with records from 0 to 10 as new field with label "rice". Then 11 to 15 as "wheat", 15 to 25 as "corn", and the remaining unclassified records as "others".
To do this with ArcGIS Desktop, do I use the Field Calculator?
arcgis-desktop shapefile vector
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
asked Jan 28 at 16:07
GISnewGISnew
827
So I have a shapefile consisting of 1000 polygon records. I would want to reclassify one field "Value" into a new blank field named "New Value". As an example:
record = 1; value = 25.6
record = 2; value = 35.4
record = 3; value = 14.1
record = 4; value = 44.6
record = 5; value = 8.7
record = 6; value = 2.1
record = 7; value = 10.4
record = 8; value = 18.3
record = 9; value = 30.9
record = 10; value = 28.5
I want all records with records from 0 to 10 as new field with label "rice". Then 11 to 15 as "wheat", 15 to 25 as "corn", and the remaining unclassified records as "others".
To do this with ArcGIS Desktop, do I use the Field Calculator?
arcgis-desktop shapefile vector
arcgis-desktop shapefile vector
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
asked Jan 28 at 16:07
GISnewGISnew
827
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
asked Jan 28 at 16:07
GISnewGISnew
827
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
edited Jan 28 at 21:37
PolyGeo♦
53.5k1780240
53.5k1780240
asked Jan 28 at 16:07
GISnewGISnew
827
asked Jan 28 at 16:07
GISnewGISnew
827
asked Jan 28 at 16:07
GISnewGISnew
827
827
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
You will need to build an expression like the one in Writing If-Then Statement in ArcGIS Field Calculator using Python Parser? You need an if, elif, elif, else statement.
Set your language to Python in the Field Calculator.
Put this in the code block:
def rc(f):
if 10 >= f >= 0:
return "rice"
elif 15 >= f >= 11:
return "wheat"
elif 25 >= f >= 16:
return "corn"
else:
return "others"
put this in the expression box:
rc(ValueField)
Value field will be the field that holds the values you want to reclassify.
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
answered Jan 28 at 16:17
jbalkjbalk
4,269729
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
You will need to build an expression like the one in Writing If-Then Statement in ArcGIS Field Calculator using Python Parser? You need an if, elif, elif, else statement.
Set your language to Python in the Field Calculator.
Put this in the code block:
def rc(f):
if 10 >= f >= 0:
return "rice"
elif 15 >= f >= 11:
return "wheat"
elif 25 >= f >= 16:
return "corn"
else:
return "others"
put this in the expression box:
rc(ValueField)
Value field will be the field that holds the values you want to reclassify.
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
answered Jan 28 at 16:17
jbalkjbalk
4,269729
add a comment |
You will need to build an expression like the one in Writing If-Then Statement in ArcGIS Field Calculator using Python Parser? You need an if, elif, elif, else statement.
Set your language to Python in the Field Calculator.
Put this in the code block:
def rc(f):
if 10 >= f >= 0:
return "rice"
elif 15 >= f >= 11:
return "wheat"
elif 25 >= f >= 16:
return "corn"
else:
return "others"
put this in the expression box:
rc(ValueField)
Value field will be the field that holds the values you want to reclassify.
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
answered Jan 28 at 16:17
jbalkjbalk
4,269729
add a comment |
You will need to build an expression like the one in Writing If-Then Statement in ArcGIS Field Calculator using Python Parser? You need an if, elif, elif, else statement.
Set your language to Python in the Field Calculator.
Put this in the code block:
def rc(f):
if 10 >= f >= 0:
return "rice"
elif 15 >= f >= 11:
return "wheat"
elif 25 >= f >= 16:
return "corn"
else:
return "others"
put this in the expression box:
rc(ValueField)
Value field will be the field that holds the values you want to reclassify.
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
answered Jan 28 at 16:17
jbalkjbalk
4,269729
You will need to build an expression like the one in Writing If-Then Statement in ArcGIS Field Calculator using Python Parser? You need an if, elif, elif, else statement.
Set your language to Python in the Field Calculator.
Put this in the code block:
def rc(f):
if 10 >= f >= 0:
return "rice"
elif 15 >= f >= 11:
return "wheat"
elif 25 >= f >= 16:
return "corn"
else:
return "others"
put this in the expression box:
rc(ValueField)
Value field will be the field that holds the values you want to reclassify.
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
answered Jan 28 at 16:17
jbalkjbalk
4,269729
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
edited Jan 28 at 21:40
PolyGeo♦
53.5k1780240
53.5k1780240
answered Jan 28 at 16:17
jbalkjbalk
4,269729
answered Jan 28 at 16:17
jbalkjbalk
4,269729
answered Jan 28 at 16:17
jbalkjbalk
4,269729
4,269729
add a comment |
add a comment |
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