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Mathematically Verifying South African ID Numbers with Survey123

by dlengton | Dec 2, 2016 | Apps, Mobile, Tips and Tricks

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 : Date of birth. G  : Gender. 0-4 Female; 5-9 Male. SSS  : Sequence No. for DOB/G...

How to save over 70GB of hard drive space in one click!

by Administrator | Sep 5, 2016 | Database, Geodatabase, Tips and Tricks

Recently I found myself wondering where exactly all the space on my hard drive was going. One day it was there, and the next it was gone. I did my usual Windows clean-up but still wasn’t happy with the outcome so I did a bit more exploring into the Esri side of things...

Check to see if a field exists using Python

by Julian | Aug 20, 2015 | Desktop, Geodatabase, Tips and Tricks

Ever wanted to know if a certain field exists in a feature class or attribute table? This could be to either populate it with something if it does exist or create it first if it does not exist, then populate it. The easy steps below will show you how to check if a...

6 things you can do with ArcGIS in 60 minutes or less

by richard@esri | Aug 20, 2015 | Tips and Tricks

The ArcGIS product stack can sometimes be overwhelming. Quite often I get asked if we “can do something” – before I even hear the “thing” my answer is yes! The challenge is always how to do it and with which set of tools. So, with all this amazing technology, we...

Getting domains into the Geodatabase the easy way

by Vee Naidoo | Aug 14, 2015 | Tips and Tricks

We are often faced with the challenge of having to create (or update) a vast number of domains within a Geodatabase. The common way to do this is through the Properties dialog in Catalog – but this is not helpful if you have tens or hundreds of domain values to type...
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EIS Africa | Sustainable Development in Africa | 2025