Atrejosq: It’s a remote co-worker’s ACAD, and I think it’s 2018, if there is such a thing. The SU2018 is on my machine.
Anssi/ gsharp: they’re contour lines that are interpolated by bathymetric processing software from a sonar survey that uses only a single ‘beam,’ sounding the bottom of the harbor we’re dredging. The name of the software escapes me (it’s also on co-worker’s end). I’ve had to freehand-trace his results from pdf or jpg twice now. It’s not fun even if it works right - since there is a very large number of small-radius curves. Aside from the inherent inaccuracy of doing it that way, it’s often the case that unexpected holes in the freehand tracings come about, and/or they get shifted ever-so-slightly out of plane, so the needed area calculations become even more problematic while I tear my hair out trying to get these silly shapes to fill using every trick I can come up with (ThomThom’s extensions are indispensable).
I’ve been trying to get aforementioned co-worker to do these seemingly-simple area totals (everything below -7’, for example) on ACAD, but apparently it’s no snap on HIS end, either.
I’ve struggled through another month’s data on this using the aforementioned (mickey-mouse tracing) process, and I don’t think it’s going to be the last time it haunts me.
Anssi - co-worker apparently does what you describe, or similar export, from the bathy. software to his ACAD, then adds some other layer information (project plan) to orient viewers, so it seems like it’s already been through that process. It’s been decades since I used ACAD, but I would assume it would be similarly able to calculate areas of irregular shapes, right?
I’m new with this company, hired for this one project only because of certain bureaucratic qualifications I have for fed gov construction contract work - certainly not for my dredging expertise. Since dredging is part of their core biz, it baffles me that they don’t have a very standard process by which to demonstrate their progress and thus substantiate their monthly billings. Looks like it’s going to be a monthly nightmare until it’s done…