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Author: dlengton

Mobile Specialist at Esri South Africa
Survey123 – Progress / Increment bar
January 5, 2018February 2, 2021

Survey123 – Progress / Increment bar

Let’s kick the year off with something special – A customized progress /  increment bar for Survey123! For a recent survey that I designed I […]

Category: Technology Innovation by dlengton
Survey123 with a single attribute for repeating generic questions (instead of multiple attributes);  and an auto-incremented list!
December 14, 2017February 2, 2021

Survey123 with a single attribute for repeating generic questions (instead of multiple attributes); and an auto-incremented list!

Example Requirement: You are being tasked with creating a Disaster Risk Assessment form (as above) which requires the field worker to capture the risk factor […]

Category: Technology Innovation by dlengton
October 5, 2017February 2, 2021

Calculating distances between locations (geopoints) in Survey123 with the Haversine Formula

Consider the scenario where a person is applying for a liquor licence and the law stipulates: New liquor premises must be located at least five hundred […]

Category: Technology Innovation by dlengton
Mathematically Verifying South African ID Numbers with Survey123
December 2, 2016February 2, 2021

Mathematically Verifying South African ID Numbers with Survey123

This blog post describes how South African ID numbers can be verified mathematically in Survey123. South African ID numbers have the following format: {YYMMDD}{G}{SSS}{C}{A}{Z} YYMMDD : […]

Category: Technology Innovation by dlengton
July 16, 2015February 2, 2021

Three Steps to Asset Management with ArcGIS Online and Collector

Three quick steps to do Asset Management with Collector and ArcGIS Online: Step 1 (ArcMap) – Authoring your feature classes and tables: What you need: […]

Category: Technology Innovation by dlengton

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