topography 0.0.2

Perform interpolation on surfaces to generate topographic-style maps.

topography :earth_americas:

Contains different approaches to modeling terrain and maps in python

Requirements

• numpy
• matplotlib

Usage

Install

pip install topography

Implementation

# read in data from csv file in form X, Y, Z
data = Map.readFromCsv("filename.csv")

M = Map(data)

# show plot and ouputs interpolated values to file
M.idw(filename="map_output_idw", showWhenDone=True)

Features

Inverse Distance Weighting

A given point P(x, y) is determined by the values of its neighbors, inversely to the distance of each neighbor.

This ensures a P is more dependent on nearer points.

• Weighting function W(x, y) of the form exp(-d(x, y))

Nearest Neighbor (in progress)

P(x, y) is determined only by the value of its nearest neighbor.

Spline (in progress)

A 2D-spline is fit to known points, where unknown points P(x, y) can be determined.

credit to arcGIS