I am a beginner of ArcGIS and I encounter a problem of true distance.
I used "create fishnet" to have a grid map within 0-40N, 20E-90E. Suppose each two points are connected with a railway/road (which does not follow the great circle path of the two points), is it still possible to know the true distance in kilometers of this railway/road between two points? Especially when the two points has a huge difference in latitudes. I found this difficult because the fishnet is built using coordinates, and it seems projection use degree as linear unit could not give true distance if not along the Equator or a specific longitude.