Hello people
I put this thread in this category because I don't know anything about how its done or where it should be. Cartography seemed cool.
Here is the thing. I have isolines every 25 m wich I exported from a CAD shape (I don't know if its relevant), and now i wish to make a slope map (and an elevation one if its relationed ;)) setting my own "intervals" in %.
Hope you can help me and hope I'm in the correct category
😉
Almost all the slope tools require 3D/Spatial Analyst.
Here is a poor mans idea.
Generate Line length between your points and embed them with elevation at their point.
then export them to a table which you can bring into Excel and generate a graph based on elevation and length. it is crude but effective.
Hey rborchert
i think that will generate an slope GRAPH. I need a map with diferent colors that indicate the slope in %, with intervals, like this:
[ATTACH=CONFIG]31012[/ATTACH]
Thanks anyway!!!!!!
Without spatial analyst it would be very time consuming to do this. It is doable but will take a lot of work and mathematics
Slope is essentially 2 points on different contours and you calculate the Angle from one point to the other.
The math is simple use of SOH CAH TOA and you could actually calculate en mass in Excel provided you do the leg work.
Going back to my Map Fundamentals class in college. You place 2 points. Draw a line to connect them. Determine the length of the line (hypotenuse) and determine height based on the differences in which contour each point is on. You will always know one angle is 90 degrees. However, you won't end up with the nice color map. But you can have resulting lines with the slope as an attribute.
Now to get complicated you can manually make TINs and create polygons from them that you can color based on slope. But that would take a lot of work
I HAVE SPATIAL ANALYST INSTALLED!!
Anyway...........I'd rather die than doing it the other way!!