Help with Compass dat files read (and processed) by Survex

[Josep Guarro]

Hi Olly, again thank's for your help, yes I had the MAK file export from Ariane for this survey, and also there is some missing data on the exported MAK file, no coordinate system nor zone etc, son when read by Survex, the 0 station it is fixed at 0,0,0 coordinates. Not an issue however, as I worte a svx file, to include the MAK file and the write the *cs in and *cs out and fixed the 0 station to the correct coords.

Best regards

On Mon, Oct 13, 2025, at 8:13 PM, Olly Betts wrote:
> On Mon, Oct 13, 2025 at 09:46:19AM +0200, Josep Guarro wrote:
>> Hi Olly, thank you very much for your information on both emails
>> 
>> >It sounds like Ariane's .DAT export is incorrect for metric data.
>> 
>> Yes, that is the issue, also the entrance coordinates are lost on
>> Ariane's .DAT export, I will write to the Ariane's author to let him
>> know these issues.
>
> Just in case you aren't aware, you need a .MAK as well as the .DAT to
> specify fixed point coordinates to Compass.  The documentation for .MAK
> format is:
>
> https://fountainware.com/compass/HTML_Help/Project_Manager/projectfileformat.htm
>
> Survex can also read Compass .MAK (with some limitations noted in the
> manual).
>
> And please do report problems reading Compass files - the format
> documentation is fairly comprehensive and Larry has been helpful with
> clarifying details, but this code presumably gets less real-world use
> than the native Survex format.
>
> Cheers,
>     Olly

-- 
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Josep Guarro