I installed svg.charts, piped my measurements out to a CSV file (x,y) with the first line as a header, and generated a plot of the topography using my script. I then loaded the topography into Inkscape, trashed the extraneous vectors (e.g., symbology, axes, legend), and scaled to the on-the-map cross section length and appropriately scaled height. Remember that cross sections must always have the vertical scale be the same as the horizontal scale.
I could continue on and finish the cross section in Inkscape, except I doubt my TAs would approve. So I printed it out and traced over the topography. It matched up with the cross section line perfectly. Hopefully the next time I'll be more efficient at this.
Although, I was considering that I could have avoided hand measurements by scanning the map and doing the following in a GIS:
- Plot a point on top of each index contour on the cross section line
- Give each point the appropriate elevation attribute
- Generate a distance vs. elevation plot using a QGIS script
- Use my script and scale appropriately using Inkscape
I won't post the script unless I'm asked. It's really trivial, though. But perhaps gnuplot would have been a little faster :-)