Interested to know how expressions are calculated

[nadj]

Hi all,

Within the SDK pack. I can see that FS Interrogator uses the expression *90/10001750 on the memory read result to gain the actual Latitude. My question is: how is this expression deduced for this particular field and others? or is this black box stuff? :wink:

[Pete Dowson]

Within the SDK pack. I can see that FS Interrogator uses the expression *90/10001750 on the memory read result to gain the actual Latitude. My question is: how is this expression deduced for this particular field and others? or is this black box stuff? :wink:

It's just based on the units used in FS. In this case, I think it's the number of metres from the equator (10001750 metres is about 6215 statute miles). So dividing by that and multiplying by 90 gives you degrees.

The reference used by those editing FSInterrogate's FSI files is the Programmer's Guide document.

Regards,

Pete