Repeatedly collecting data from same places but at different times

User Support Form Building
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I’m totally new to KoboToolbox and I’m still discovering all possibilities.

For a non-profit project we would like to collect data from different natural water sources. Volunteers can discover new sources, but also revisit the same place after a few weeks or months, or send data from a place where someone else has been before. As part of the project we want to show how the data at the same place evolves over time.

I am now facing three challenges:

  1. I’m trying to find a good way how to let people select the place. Currently I am using the “GPS question”. It would be great if users could see previously submitted places and just select one again if they revisit it so that we can link the data from different visits to the same place. If we add all previous places to a select menu, users will find it difficult to link the name on the list to a location because it usually doesn’t have a street address which could be uniquely identified by a description.
  2. We also would like to share a table or map to the public with a preset filter where only items of one value in a selected column would be shown, so that you see all data of different times that belong to the same place. Can you share the table or the map with an active filter transmitted in the URL?
  3. We would like to display how the data at one place evolves over time, so I was searching for a filter by a time frame on the map so that you can zoom to one area and then slide through the time and see which measurements were taken.

Thanks for your advice!

1 Like
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Welcome to the community, @fontino! Maybe try exploring the Dynamic Data Attachment feature to see if it helps:

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Thank you for the hint!

So, in the “parent project” we would have a list of sources mapped to their GPS, and in the “child project” we would refer to this list, a bit like a relational database?