8.2.6 Polygons - LUPMISManual
Main menu:
- 0. Introduction
- 1. GIS handling
-
2. GIS data entry
- 2.1 Create new layer
- 2.2 Digitize line
- 2.3 Digitize point
- 2.4 Digitize polygon
- 2.5 Edit existing layer
- 2.6 Delete feature
- 2.7 Split line
- 2.8 Split polygon
- 2.9 Merge lines from different layers
- 2.10 Unite lines
- 2.11 Snap lines
- 2.12 Join polygons
- 2.13 Extend polygon
- 2.14 Insert island
- 2.15 Define unit surrounding islands
- 2.16 Create 'doughnut'
- 2.17 Fill 'doughnut' polygon
- 2.18 Fill polygon with 'holes'
- 2.19 Digitize parcels from sector layout
-
3. GIS operations
- 3.1 Create buffer
- 3.2 Create exclusion zone
- 3.3 Overlay units
- 3.4 Convert line to polygon
- 3.5 Derive statistics (area size, length)
- 3.6 Clip unit according to other unit
- 3.7 Create geographic grid
- 3.8 Move entire vector map
- 3.9 Move or copy individual features on a map
- 3.10 Adjust polygon to line
- 3.11 Convert points to polygon
- 3.12 Define by distance
- 3.13 Create multiple objects
- 3.14 Transfer styles from one layer to another
-
4. Attribute database
- 4.1 Start with database
- 4.2 Import database
- 4.3 Display database information
- 4.4 Enter attribute data
- 4.5 Attribute matrix of multiple layers
- 4.6 Seeds
- 4.7 Repair attribute data
- 4.8 Merge lines with attached database
- 4.9 Transfer attribute data from points to polygons
- 4.10 Copy styles, labels, attributes
-
5. Conversion of data
-
5.1 Points
- 5.1.1 Import list of points from text file
- 5.1.2 Import list of points from Excel file
- 5.1.3 Convert point coordinates between projections
- 5.1.4 Convert point coordinates from Ghana War Office (feet)
- 5.1.5 Convert point coordinates from Ghana Clark 1880 (feet)
- 5.1.6 Track with GPS
- 5.1.7 Download GPS track from Garmin
- 5.1.8 Download GPS track from PDA
- 5.1.9 Frequency analysis of points
- 5.2 Vector maps
- 5.3 Raster maps
-
5.4 Communication with other GIS programs
- 5.4.1 Import GIS data from SHP format
- 5.4.2 Import GIS data from E00 format
- 5.4.3 Import GIS data from AutoCAD
- 5.4.4 Export LUPMIS data to other programs
- 5.4.5 Export GIS to AutoCAD
- 5.4.6 Change a shape file to GPX
- 5.4.7 Transfer GIS data to other LUPMIS installations
- 5.4.8 Digitize lines in Google Earth
- 5.5 Terrain data
- 5.6 Export to tables
- 5.7 Density map
-
5.1 Points
-
6. Presentation
- 6.1 Labels
- 6.2 Styles and Symbols
- 6.3 Marginalia
- 6.4 Legend
- 6.5 Map template
- 6.6 Final print
- 6.7 Print to file
- 6.8 3D visualization
- 6.9 External display of features
- 6.10 Google
-
7. GIS for land use planning
- 7.1 Introduction to land use planning
- 7.2 Land use mapping for Structure Plan
- 7.3 Detail mapping for Local Plan
- 7.4 Framework
- 7.5 Structure Plan
- 7.6 Local Plan
- 7.7 Follow-up plans from Local Plan
- 7.8 Land evaluation
-
8. LUPMIS Tools
- 8.1 General
-
8.2 Drawing Tools
- 8.2.1 Overview
- 8.2.2 UPN
- 8.2.3 Streetname + housenumbers
- 8.2.4 Lines
- 8.2.5 Arcs
- 8.2.6 Polygons
- 8.2.7 Points
- 8.2.8 Cut line
- 8.2.9 Other Drawing Tools
- 8.2.10 Import
- 8.2.11 Projections + conversions
- 8.2.12 Format conversion
- 8.2.13 Other GIS Tools
- 8.2.14 Utilities
- 8.3 Printing Tools
- 8.4 Permit Tools
- 8.5 Census Tools
-
8.6 Revenue Tools
- 8.6.1 Overview
- 8.6.2 Entry of revenue data
- 8.6.3 Retrieval of revenue data
- 8.6.4 Revenue maps
- 8.6.5 Other revenue tools
- 8.7 Reports Tools
- 8.8 Project Tools
- 8.9 Settings
-
9. Databases
- 9.1 Permit Database
-
9.2 Plans
- 9.2.1 Accra
- 9.2.2 Kasoa
- 9.2.3 Dodowa
- 9.2.4 Sekondi-Takoradi
-
9.3 Census Database
-
9.4 Revenue Database
-
9.5 Report Database
-
9.6 Project Database
- 9.7 Address Database
-
Annexes 1-10
- A1. LUPMIS setup
- A2. Background to cartography/raster images
- A3. Glosssary
- A4. Troubleshooting
- A5. Styles
- A6. Classification for landuse mapping/planning
- A7. GIS utilities
- A8. Map projection parameters
- A9. Regions / Districts
- A 10. Standards
-
Annexes 11-20
- A11. LUPMIS distribution
- A12. Garmin GPS
- A13. Training
- A14. ArcView
- A15. Population statistics
- A16. Entry and display of survey data
- A17. External exercises
- A18. Programming
- A19. Paper sizes
- A20. Various IT advices
- A21. Site map and references
8.2.6 Polygons
Level of expertise required for this Chapter: Intermediate; specifically for LUPMIS @ TCPD
- a) Rectangular Parcel(s)
A rectangular parcel (with 90° angles of the sides) can be defined by its width and height in meters. As explained earlier, the start point, i.e. the northwest corner, has to be entered either directly from Map Maker or from an existing DRA file or by its x/y coordinates.
The parcel can also be created. Be aware, that 90 deg orientation is the 'straight' default direction.
This Tool is also to create multiple identical parcels of the same dimensions. Beside the size (width and height) of the parcel ('parcel 1'), you define how many parcels should be in the row ('to the right') and how many rows ('up') there should be. (Example below: 6 in the row, 2 rows).
You can also alter the 'gap' (distance) between the parcels. For most schemes, this will remain 0 , i.e. no gap between the parcels.
If the angle is default of 90°, the parcels are oriented in W-E and N-S direction, see below:
If the transformation angle for the the copying process is specified, the copy process will follow that oblique angle, see below:
b) Irregular Parcel(s)
If a parcel is not of rectangular shape, you can define each corner point of this polygon by its distance / bearing or by x / y coordinates, similar to the definition of a line (under ' Lines').
Before, the start point (normally the top left corner) has to be set.
Many irregular parcels
This is imilar to the function above, but creating multiple copies to the right and / or up of the defined irregular parcel. Transformation angles for the copying process different to 90° can be defined (see also illustrations above).
