Hello:
I'm a profesional engineer. I graduated in 2005 from San Marcos University in my country, Perú. My speciality is Mechanic of Fluids.
Thanks to my profesional degree, I have good skills in mathematics and physics fields.
About your project:
As you describe it, it's about a topographic survey.
1.- I've checked your tiff file. It's good but when zooming some height lines, the light-brown ones, seems to overlap themselves on some parts of the plan.
2.- It will be great to see those lines
3.- It's important to know how big is this red box compared to the original file. Does it covers all the plan, or just a small part? Also, How much detailed do you want those lines transformed to curves? It's ok to "imagine" how those lines will look like on the real terrain?
4.- Hope to know more about this
5.- Do you have a template for those layouts? Are you using a special scale for those?
Since, I don't have more information about the area of the drawing to be worked (the red box,and the red straight line), my bid still can be improved. To obtain the best result of this projec it'simportant your feedback along to them.
I understand what are you requiring for. To obtain a topographic profile of a terrain.
Greetings