Homework #7

CMP 464/788: Topics Course: Data Science Spring 2017

Deadline: Thursday, 23 March 2017, 11:59pm

Data

For this assignment, you will need two different data sets:

1. The historical population for New York City used in Homework #2.
2. Image files from USGS Remote Sensing Program (see below for specific images).

We will use these data sets for later homework assignments. Since scraping the data takes time, save these data sets to use again for the future programs.

Assignment

The work to be submitted is the same for the undergraduate and graduate course.

CMP 464/788 Homework:
#1-2 Using gradient descent compute the linear regression for the historical Bronx population versus the total New York City population. Display a plot containing the pairs (bx[i],nyc[i]) where bx[i] is the Bronx population in year i and nyc[i] is the total New York city population in year i (Hint: use a scatter plot to show this part). Include on your plot the linear regression line that you computed.

Make sure to include in the title of your plot the date plotted.

#1: Submit your Python program as a .py file.
#2: Submit a screen shot of the graphics window containing the plot.
#3-4 The USGS collected images before and after the Both: New Year's flooding: New Year's flooding (saved as png for December, 2015 and for January, 2016). Write a program that produces an image with flooded regions marked in red (that is, any pixel that is not "blue" in 2015 but is in the 2016 image).

#3: Submit your Python program as a .py file.
#4: Submit a screen shot of the graphics window containing the plot.
#5-6 The USGS remote sensing gallery contains an image of New York City. Filter this image to be a ninth of its original size by saving one pixel out of every 3 x 3 subset.

#5: Submit your Python program as a .py file.
#6: Submit a screen shot of the graphics window containing the plot.

Submitting Homework

To submit your homework, log on to the Blackboard system, and go to "Homework". For each part of the homework, there is a separate input box. You may submit the homework as many times as you would like before the deadline.