---
title: "How to use global coordinates on desktop processing"
slug: "how-to-use-global-coordinates-on-desktop-processing"
tags: ["How to ..."]
updated: 2025-03-04T09:47:02Z
published: 2025-03-04T09:47:02Z
canonical: "knowledge.navvis.com/how-to-use-global-coordinates-on-desktop-processing"
---

> ## Documentation Index
> Fetch the complete documentation index at: https://knowledge.navvis.com/llms.txt
> Use this file to discover all available pages before exploring further.

# How to use global coordinates on desktop processing

## Introduction

### Purpose

In some situations, control points were measured under global coordinate system, such as EPSG. Usually desktop processing only takes the control point values under 20,000 into account, so you need to truncate the control point file first. Then you must calculate the difference to import the data correctly into NavVis IVION in the global coordinate systems.

### Scope

Solution applies to: Desktop processing v.2.14+

## Procedure

1. To process with large numbers under global coordinate system, add one commented line in the control point csv file. An example is shown in the first line below:

```plaintext
#, CRS, EPSG:2169,  

id, x, y, z # this line is optional

ABC, 1000000.0, 2000000.0, 3000000.0

DEF, 4000000.0, 5000000.0, 6000000.0
```
2. This way SiteMaker can process the data without error, and later one can directly import the processed data into IVION with the same coordinate system selected.

> [!NOTE]
> **Note:** when using this method, you'll still receive the following warning in the processing log:
> 
> “Warning: At least one control point has a coordinate value outside of the range of a local metric coordinate system: |val| > 20000.0”
> 
> This can be ignored, as long as the processing is not interrupted with an error.

European Petroleum Survey Group