How to know or convert AREA, PERIMETER units in QGIS
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I use Convexhull tool in QGIS and there are result value :
AREA = 0.0017494390 PERIMETER = 0.1725495172
I thought the result was strange. So, I took a rough estimate of the points through the services provided by other websites and picked out the results.
Other site result :
Area = 17220976.88 m^2 PERIMETER = 17030.657 m
Area value is a difference of 10^10
Perimeter value is a difference of 10^5..
I use "EPSG:4166 - korean 1995" CRS and I also change project properties for units of distance, area. but, there are not any change.
So, I want to know what convex hull units are in QGIS and how to set other setting for ideal value.
qgis area units convex-hull
edited 30 mins ago
Vince
14.8k32850
asked 1 hour ago
조광호조광호
61
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I use Convexhull tool in QGIS and there are result value :
AREA = 0.0017494390 PERIMETER = 0.1725495172
I thought the result was strange. So, I took a rough estimate of the points through the services provided by other websites and picked out the results.
Other site result :
Area = 17220976.88 m^2 PERIMETER = 17030.657 m
Area value is a difference of 10^10
Perimeter value is a difference of 10^5..
I use "EPSG:4166 - korean 1995" CRS and I also change project properties for units of distance, area. but, there are not any change.
So, I want to know what convex hull units are in QGIS and how to set other setting for ideal value.
qgis area units convex-hull
edited 30 mins ago
Vince
14.8k32850
asked 1 hour ago
조광호조광호
61
New contributor
조광호 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 use Convexhull tool in QGIS and there are result value :
AREA = 0.0017494390 PERIMETER = 0.1725495172
I thought the result was strange. So, I took a rough estimate of the points through the services provided by other websites and picked out the results.
Other site result :
Area = 17220976.88 m^2 PERIMETER = 17030.657 m
Area value is a difference of 10^10
Perimeter value is a difference of 10^5..
I use "EPSG:4166 - korean 1995" CRS and I also change project properties for units of distance, area. but, there are not any change.
So, I want to know what convex hull units are in QGIS and how to set other setting for ideal value.
qgis area units convex-hull
edited 30 mins ago
Vince
14.8k32850
asked 1 hour ago
조광호조광호
61
New contributor
조광호 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
I use Convexhull tool in QGIS and there are result value :
AREA = 0.0017494390 PERIMETER = 0.1725495172
I thought the result was strange. So, I took a rough estimate of the points through the services provided by other websites and picked out the results.
Other site result :
Area = 17220976.88 m^2 PERIMETER = 17030.657 m
Area value is a difference of 10^10
Perimeter value is a difference of 10^5..
I use "EPSG:4166 - korean 1995" CRS and I also change project properties for units of distance, area. but, there are not any change.
So, I want to know what convex hull units are in QGIS and how to set other setting for ideal value.
qgis area units convex-hull
qgis area units convex-hull
edited 30 mins ago
Vince
14.8k32850
asked 1 hour ago
조광호조광호
61
New contributor
조광호 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
edited 30 mins ago
Vince
14.8k32850
asked 1 hour ago
조광호조광호
61
New contributor
조광호 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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edited 30 mins ago
Vince
14.8k32850
edited 30 mins ago
Vince
14.8k32850
edited 30 mins ago
Vince
14.8k32850
14.8k32850
asked 1 hour ago
조광호조광호
61
New contributor
조광호 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked 1 hour ago
조광호조광호
61
asked 1 hour ago
조광호조광호
61
61
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조광호 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
조광호 is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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add a comment |
add a comment |
1 Answer
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The unit of EPSG:4166 - korean 1995 CRS is decimal degree. You need to change the projection of your data to a CRS that uses meter unit. For example, you can use WGS 84 / UTM Zone ## projection with the correct zone number ## in which your data is located in.
The workflow is like this:
- Change the projection of your data to a
WGS 84 / UTM Zone ##with correct Zone number - Use the output data from the first step to add new fields for area and perimeter, and calculate both area and perimeter.
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
I'd suggest EPSG:5179 (Korea 2000 / Unified CS)
– Mike T
32 mins ago
add a comment |
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1 Answer
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active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The unit of EPSG:4166 - korean 1995 CRS is decimal degree. You need to change the projection of your data to a CRS that uses meter unit. For example, you can use WGS 84 / UTM Zone ## projection with the correct zone number ## in which your data is located in.
The workflow is like this:
- Change the projection of your data to a
WGS 84 / UTM Zone ##with correct Zone number - Use the output data from the first step to add new fields for area and perimeter, and calculate both area and perimeter.
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
I'd suggest EPSG:5179 (Korea 2000 / Unified CS)
– Mike T
32 mins ago
add a comment |
The unit of EPSG:4166 - korean 1995 CRS is decimal degree. You need to change the projection of your data to a CRS that uses meter unit. For example, you can use WGS 84 / UTM Zone ## projection with the correct zone number ## in which your data is located in.
The workflow is like this:
- Change the projection of your data to a
WGS 84 / UTM Zone ##with correct Zone number - Use the output data from the first step to add new fields for area and perimeter, and calculate both area and perimeter.
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
I'd suggest EPSG:5179 (Korea 2000 / Unified CS)
– Mike T
32 mins ago
add a comment |
The unit of EPSG:4166 - korean 1995 CRS is decimal degree. You need to change the projection of your data to a CRS that uses meter unit. For example, you can use WGS 84 / UTM Zone ## projection with the correct zone number ## in which your data is located in.
The workflow is like this:
- Change the projection of your data to a
WGS 84 / UTM Zone ##with correct Zone number - Use the output data from the first step to add new fields for area and perimeter, and calculate both area and perimeter.
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
The unit of EPSG:4166 - korean 1995 CRS is decimal degree. You need to change the projection of your data to a CRS that uses meter unit. For example, you can use WGS 84 / UTM Zone ## projection with the correct zone number ## in which your data is located in.
The workflow is like this:
- Change the projection of your data to a
WGS 84 / UTM Zone ##with correct Zone number - Use the output data from the first step to add new fields for area and perimeter, and calculate both area and perimeter.
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
answered 1 hour ago
ahmadhanbahmadhanb
24k32155
24k32155
I'd suggest EPSG:5179 (Korea 2000 / Unified CS)
– Mike T
32 mins ago
add a comment |
I'd suggest EPSG:5179 (Korea 2000 / Unified CS)
– Mike T
32 mins ago
I'd suggest EPSG:5179 (Korea 2000 / Unified CS)
– Mike T
32 mins ago
I'd suggest EPSG:5179 (Korea 2000 / Unified CS)
– Mike T
32 mins ago
add a comment |
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