OF collect survey entry relevant only for unknown and unlisted species

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I would like to know if it is feasible and what would be the expression to have a new entry in a survey that would only be relevant when the tree species is unknown or unlisted.

I have added manually entries in the tree species list for Unknown or Unlisted species as follows:

no / code / family / scientific_name / synonyms / khm

10000 / UNK / Unknown / Unknown species / / Unknown species

10001 / UNL / Unlisted / Unlisted species / / Unlisted species

(following previous questions here on unknown and unlisted species predefined in the preview in OF collect but not working in OF mobile)

I have created a new entry in tree after the tree_species in the OF collect survey and I would like to make it relevant only when expression is verified' with an expression looking like:

tree_species = 'Unknown species'

However I don't know what expression to write as the tree species is not a single values list but a table with several columns.

Any help would be much appreciated!

asked

GaelS 13●4 accept rate: 0%

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Accepted answer

Dear Gael,
Please try to use the code of the species in the expression that you have to write. For example: 

tree_species = 'UNK'

The expression checks that the user selected the value "UNK" in the tree_species attribute of the same "tree" where the new attribute is defined.

Many thanks,
Open Foris Team

permanent link

answered

Stefano (OF) ♦♦ 5.7k●1●1●9 accept rate: 19%

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