8.3.9 Utilities - LUPMISManual

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8. LUPMIS Tools > 8.3 Processing Tools

8.3.9 Utilities

Level of expertise required for this Chapter: Intermediate; specifically for LUPMIS @ TCPD




  • a) Photo / Topo Coverage:

A rectangular tiling system of images is standard in LUPMIS to enable easy access and archiving:

  • The standard area size of images at high resolution is 2 x 1 km (width 2 km, height 1 km). For lower resolution, image 'overviews' have area sizes of 6 x 3, 12 x 6, 24 x 12 km.
  • All images are 'anchored' with their left bottom (SW) corner at a round km-grid in UTM 30.
  • This 'anchor' determines the first part of the file name. After that number, the file name includes the year, size and resolution, all separated by _. Additional remarks about the processing might be added at the end.
  • All images of one set (same year, same resolution) are stored in one folder under the photo folder of the District.

Example: 6780789_2010_2x1_40: At SW corner of 678000 / 789000 with an area of 2 x 1 km and a resolution of 40 cm, of the year 2010. 

The full syntax of all image files (satellite images, aerial photographs, topo sheets) can be viewed Drawing Tools > Utilities > Photo / topo coverage, also shown below:



You can also enter a filename of an image, and have its extent displayed in GIS or in an Internet map browser.


If the raw source file(s) are very large or in a different projection, tiles can be created automatically through LUPMIS (see Chapter 8.2.13.1: Cut to tiles). 


If work is carried out in smaller scales (e.g. for Structure Plans or SDF), images are better re-sampled to cover larger areas. These image 'overviews' can be automatically created throught LUPMIS (see Chapter 8.2.13.1: Merge tiles). 


This Tool 'Coverage' also has a quality-control feature of checking, if the file name of the images (satellite images or aerial photographs) follows the explained naming standards:



If the result is as below, everything is ok:



Background of this function are frequent observations, that files were wrongly (manually) named and can therefore not be found in the system.


  • b) Change style Number


  • c) Change Text Height


  • d) Procedure: New District

The recommended procedure for data population of a new District is listed under Drawing Tools > Utilities > Procedure: New District:



At the bottom of this page, you will also find specific consideration of Volta Districts/Regions and other easternmost Districts of Ghana, where the default projection is UTM 31, but to be consistent with LUPMIS, to be converted to the standard of UTM 30.


  

 
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