# The UTM projection¶

In this exercise we will learn how to define a simple projection using PROJ. We will investigate a few aspects of the UTM projection, as well as learn how to use a different ellipsoid than the default (GRS80).

Download the gie file for the exercise: `projections1.gie`

.

## Exercise 1: Setting up a projection¶

Set up a UTM projection for use in Estonia.

Hint

See Universal Transverse Mercator (UTM) for more on the projection

```
operation <your answer here>
tolerance 1 cm
accept 24.745 59.437 # Talinn, Estonia
expect 372106.37 6590881.40
```

## Exercise 2: UTM on the southern hemisphere¶

Set up a UTM projection for use on the North Island of New Zealand.

Hint

See Universal Transverse Mercator (UTM) for more on the projection

```
operation <your answer here>
tolerance 1 cm
accept 174.740 -36.841 # Auckland, New Zealand
expect 298481.34 5920382.04
```

## Exercise 3: Using a non-standard ellipsoid¶

Set up a UTM projection based on the Hayford ellipsoid for use in Estonia.

Hint

See Universal Transverse Mercator (UTM) for more on the projection

Hint

Run `proj -le`

to get a list of available ellipsoids

```
operation <your answer here>
tolerance 1 cm
accept 24.745 59.437 # Talinn, Estonia
expect 372099.99 6591034.35
```