Questions and Answers

Use the "Add comment" below to ask questions.

Question: Can I redistribute the provisional mapping?

Answer: We would discourage it. However, there may be instances where you need to pass on data in order to check on the correct classification. In which case please make sure the party you pass it to understands that it is only provisional. The official LCDB-3 will be available in June. 

Question: How much effort will this take?
Answer: We will be greatful for any effort that our collaborastors are able to make checking the LCDB mapping. It will vary between councils depending on their size and resources – effectively the more effort is able to be expended on checking, the better final the product should be in that region. We estimate the effort to comprehensively check the new mapping will range from less than a week for Auckland, to as much as 6 weeks for Canterbury. See the LCDB3VerificationInstructions.pdf document for more details on our priorities.

Question: When must it be done by?

Answer: We are hoping that collaborators can get the results to us within two months of the release of their region for checking. We prefer that the responces are spread, so would appreciate any that could be returned early as that will make it easier to deal with given our staff resources. The final corrections must be back by mid-April for us to incorporate into the public release in June. However, we anticipate an ongoing opportunity to fix errors beyond that date.

Question: Why am I denied access to download the data?

Answer: You must be logged in to the site using a recognized Google account - use the link at the bottom of any page to log in. I have set up collaborators email addresses so they can be recognized by Google. However, you still need to associate your email address with either an existing Google account, or set up a new account based on your email address. The latter is probably simplist if you have not used Google mail or other services before. Follow the link below to set up a new account on an existing email address. 

it is just a few simple steps then it should email you a confirmation link to ensure that you own the email address. Alternatively, if you already have another email address set up with Google and you would prefer to use that, then just email me and I will add it to the list of approved email addresses.

Question: Why do I get a mixture of class numerical codes (numbers) and class descriptions for the LCDB1ClassCode, LCDB2ClassCode, and LCDB3ClassCode attributes and what do the numbers mean?

Answer: The attributes in the database are held as numbers. However, a geodatabase domain can convert these into a text representation in place of the numerical codes so the LCDB-3 classes get automatically converted to a text description by ARC when you view the geodatabase version. The class numerical codes that are not defined in LCDB-3 (but were in LCDB-2) will remain as numbers. Most of these codes will be in the LCDB-2 forest age classes and before LCDB-3 is released these codes will be mapped to their corresponding LCDB-3 class. We probably should have done this mapping before releasing the draft LCDB-3 maps. Seeing a number implies we haven’t edited it during the LCDB-3 revision so if you want to know what the code represents look at the LCDB2NAME attribute or the table of codes on the final page of the  LCDB-3 Verification Instructions

Question: Is there a landcover class definition somewhere? i.e what's the difference between High producing exotic grassland and low producing grassland? If there is area that was high producing exotic grassland and is now covered with 50% manuka but is still grazed, does that make it low producing grassland? cheers (Andrew Macdonald)

Answer: We've put links to LCDB2's Illustrated Guide to Target Classes on the Collaborator's page. LCDB3 is still adhering to the LCDB2 class definitions where applicable so hopefully this will address the first part of your question. Obviously, pasture species are not evident without field inspection so you have to go on other visual cues like vigour, intensity of fencing, presence/absence of weeds and scrub etc. 50% ground cover of manuka would not be characteristic of High producing exotic grassland so its probably justifiable to revert such areas to Low producing or even Manuka/kanuka shrubland. Note the land cover group, to which Manuka/kanuka belongs, is described as Scrub or Shrubland with the latter term implying an open canopy association of shrub and herbaceous covers.

Collaborators, use the "Add comment" below to ask questions.