I'm still very new to python and need some direction in developing a Arcpy\Python script to determine the Equal-Area Slope of the Longest Water Course within a catchment. The Longest Water Course is a 3D polyline that represents the the longest river centre line in a catchment. The two jpegs explain the formula that I've trying to regenerate using Arcpy and Python:
I've figured out that I need to append the X-coordinate; Y-coordinate; and Z-value from the geometry into a python list. The I then need to step through the python list to determine the following: Area = [(0 + 1)] X 500 + ....
The 0 is the difference in height based on the first vertex Z value, which allways will be 0, the 1 is the difference in height of the second vertex Z value from the first vertex Z value, in this case 1m, the 500 is the distance between the first and second vertex.
I need assistance\guidance in how to step through the python list and calculate the following and then stick the results back into a python list or dictionary. I can then step through the python list or dictionary to determine the equal-area = [(0 + 1)/2]x 500 + [(1 + 2)/2]x 300 ....
Any help or guidance in getting the following started would be much appreciated.
Regards
Peter Wilson
أكثر...
I've figured out that I need to append the X-coordinate; Y-coordinate; and Z-value from the geometry into a python list. The I then need to step through the python list to determine the following: Area = [(0 + 1)] X 500 + ....
The 0 is the difference in height based on the first vertex Z value, which allways will be 0, the 1 is the difference in height of the second vertex Z value from the first vertex Z value, in this case 1m, the 500 is the distance between the first and second vertex.
I need assistance\guidance in how to step through the python list and calculate the following and then stick the results back into a python list or dictionary. I can then step through the python list or dictionary to determine the equal-area = [(0 + 1)/2]x 500 + [(1 + 2)/2]x 300 ....
Any help or guidance in getting the following started would be much appreciated.
Regards
Peter Wilson
أكثر...