---
title: "11. Desurveying"
canonical: "https://servicedesk.maxgeo.com/space/DS/1245773844/11.%20Desurveying"
format: markdown
---
DataShed5 is a browser-based application that allows users to view and visualise data stored within the Maxwell Data Schema. The DataShed5 interface has been designed to be as intuitive as possible, and most users should need very little instruction in order to use the basic functions.

In this presentation we will discuss desurveying in DataShed5.

 

Transcript

```
Desurveying

Desurveying is used to calculate the spatial X, Y and Z co-ordinates of points down a drill hole.  These 3D coordinates can be generated for any downhole table that contains a Depth From and Depth To. These tables must contain extra columns named Grid_ID, X, Y and Z.
For Desurveying to calculate results, a package must first be configured.
The package is first given a name, a description and the compulsory tables, collar and survey are chosen along with the calculation method.
Tick the Use Negative Dip Values box if your database uses negative values for downward holes and positive values for holes that go up.
The next step is to define the fields within the compulsory tables then the fields in the tables that require desurveyed co-ordinates. 
The depth priority determines where the co-ordinates are calculated.
Multiple tables can have downhole co-ordinates calculated.
Validate the package prior to proceeding to ensure the configuration is correct.
 

```