Risk-based acceptance process – initial results
LINZ is currently reviewing the risk-based acceptance process introduced on 1 April 2008. As part of this review, statistics derived from three months of data collected during the period 1 July to 30 September 2008 are being analysed to help identify opportunities for process improvement.
During this three month period, LINZ processed 3,300 datasets. The datasets processed and requisitioned are shown in the following table – these have been collated against the three risk profiles. (These three risk profiles summarise the original 3x3 framework.)
| Dataset risk profile |
Datasets processed |
% Requisitioned |
| Low |
1700 (52%) |
10% |
| Medium |
400 (12%) |
19% |
| High |
1200 (36%) |
21% |
Average requisition rate for the last three months is 15% compared
with 28% for the same period, July-September 2007.
The review is providing more meaningful information on dataset complexity than we have been able to establish in the past. Full results from the review will be presented in the November/December edition of Landwrap.
New e-survey tips and hints
The e-survey Tips and Hints on the Landonline website are continually being refined and added to.
Linking of marks located close together
In Landonline there are numerous examples where two or more mark nodes exist very close together. Often these are not visible to the naked eye even at a scale of 1:1.
In many instances these are legitimate nodes, e.g.
- they may represent a new mark and a disturbed mark; both connected to topology, or
- there may be a very short boundary or traverse observation between adjoining mark nodes; both connected to topology.
In other instances:
- one or more nodes may not be linked to topology but they are very close to a node that is. Some of these nodes are not legitimate, and
- some nodes may be duplicates (not linked to by new surveys, thus creating duplicate marks).
If the nodes are duplicate (mark names are the same, not disturbed or replaced), LINZ needs to be contacted to adjust them for the new survey to link to the correct one.
It is important that users select the correct node required for either linking or searching purposes.
To select the correct node in these circumstances the following can be undertaken:
- Select the Information Tool icon and click as close to these nodes as possible
- Select the drop down arrow next to the 'Feature Id' field (see screen shot 1 below)
- There will be two feature ids listed. Select one of the id's in the drop down box
- The spatial screen will briefly highlight that node
- If it is not the node you wish to link to, select the other feature id in the Information Tool drop down box
- Take a note of the node id you wish to link to
- Open Mark Details screen – see screen shot 2
- Select 'Link Mark' button (top right in screen)
- In the CDE_S01 search screen, in the 'Node Id' field, enter the node id you noted down – see screen shot 3
- Select 'Search Now'
- Select 'Select'
Your mark is now linked to the correct Landonline node.
To assist subsequent users, please advise LINZ in the Survey Report where non required DCDB nodes have been identified.
Are you using the e-survey best practice tools and tips?
The self-help information in the e-survey section is ordered by the experience level of the surveyor – novice, experienced and advanced.
Spanning a wide range of topics, the best practice section includes the tips and hints full index.
The e-survey training resources section has all the links and background on training materials provided by LINZ such as the user guide, computer based training (CBT) DVD, and the support available to surveyors.
