Migration Stepby Step

In order to do this, you will need to download and install the following programs:

You will also need to clone the following github repositories:

We will use the survey of Penny Falls as an example.

Create a temp_penny_falls folder at the correct location. This should be primadona/2018/
Copy and paste penny_falls.svx in primadona/2018/temp_penny_falls/
Open penny_falls.svx in Aven and have a look at the centreline.
Print and save as an image, making sure to tick the boxes station names and crosses. Make sure you are in plan view! Save the image under penny_falls-p.gif. Note: I usually export as pdf and use the imagemagick commandline application to convert to gif, which is the format that Xtherion accepts
Now go back to the temp_penny_falls folder: it should contain the original .svx file, an additional .3d file (opened on Aven) and .err file containing the loop closure errors. Go ahead and create the following empty text files:
- penny_falls.th
- penny_falls-p.th2
- penny_falls.thconfig*

Open the Therion application (there is an xtherion executable) and you should see the three panels: a text editor, a map editor and a compiler window (text editor at the top, and output at the bottom).
In the compiler window, open penny_falls.thconfig*. It should be empty. Now enter the following code:
```
source penny_falls.th
```
This indicates that we should include the survey data from penny falls. Then include a few layout specifications:
```
layout
scale 1 50 #you should play around with this to get a feel for what the scale should be
colour map-fg [85 80 55] # a simple RGB call
endlayout
```
And finally, specify the outputs:
```
export map -o penny_falls.pdf 
export model fmt -o penny_falls.lox
```