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Dwight Livingston wrote:Actually, if one must show the south-facing section, I'd be inclined to show it as in E below. This more clearly shows that the section has been rotated 180 degrees to be right-side-up, and has the leader pointing across the section in what I think of as the correct direction.
ian mckenzie wrote:HKalnitz wrote: I have always taught that the tic near the cross section denotes the (vertical) upward orientation of the cross section.
Again, I have never seen that on a cave map. Perhaps I am ill-informed. Can you give us an example of a published survey where the "up" orientation of cross-sections is indicated?
Dwight Livingston wrote:Actually, if one must show the south-facing section, I'd be inclined to show it as in E below. This more clearly shows that the section has been rotated 180 degrees to be right-side-up, and has the leader pointing across the section in what I think of as the correct direction.
Dwight
1) the tic (or arrow) on the plan side is used to show the direction the sketcher was facing when drawing the cross section (or the viewer of the map when viewing the passage).
2) the tic on the cross section side shows the Vertical orientation of the cross section, typically pointing upwards.
ian mckenzie wrote:Another option is to stick all of your cross sections in a separate schedule, kind of like a text-box sidebar, each identified with a letter (A - Z) corresponding to a letter next to its reference line on the survey. The box around the schedule defines the horizontal and vertical planes, and the arrows on the reference lines determine point of view. Useful for complex surveys where there may not be room for cross-section drawings adjacent to passages.
Extremeophile wrote:While a technically valid option, I personally don't like the aesthetics of this approach. It's very time consuming to look at a letter designation on the plan view and then go and locate that letter in some collection of x-sections off to the side. It may be a necessity in a few extremely complex caves, but I've seen it used where I think there was room to place them in the plan view. I would only do it as a last resort.
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