How many non-boundary pits and peaks are on the map, C/C++ Programming

Armed with your function from above, we can do some interesting things. For instance, any pixel where the offsets are both zero is a pit (lower than all surrounding points). Note that every boundary pixel is a pit, so make sure you ignore them in your code. For this second part, write a function:

     function rc = findpits(map)

that will return a matrix containing 2 columns  with the row and column indices of all non-boundary pits in map.  Notice that you can actually then find the non-boundary peaks with the same function, by simply calling it another way: findpits(-map) (think about why this works). Report how many non-boundary pits and peaks are on the map, and plot them as follows:

pits = findpits(map);

peaks = findpits(-map);

imagesc(map); colormap(gray); axis equal

hold on

plot(pits(:,2),pits(:,1),'ro');

plot(peaks(:,2),peaks(:,1),'g+');

hold off

Note: Your findpits() function will probably call findLowNhbr() from Part 1. That is, in your findpits function, you will find lowest neighbours for all points, and then figure out which points are pits.

Note: When plotting, notice that rows are y-coordinates and columns are x-coordinates, which explains their order in the plot command (2nd column, then 1st column). We'll keep talking about rows & columns in the hope it is clearer, but remember that rows indices translate into y-coordinates, and column indices into x-coordinates.

To help you check if your code is working, according to my code, test (the 10x10 test map) has pits at (3,6), (6,3), and (6,6) and peaks at (5,5) and (8,5).

What to submit: Include the m-file for findpits in your zip file. In solutionWatersheds.m, call this function with the provided elevation map ('map'), and generate a figure like the one above, showing all the pits and peaks. Also print out the number of peaks and pits you found.

Posted Date: 3/29/2013 2:55:22 AM | Location : United States







Related Discussions:- How many non-boundary pits and peaks are on the map, Assignment Help, Ask Question on How many non-boundary pits and peaks are on the map, Get Answer, Expert's Help, How many non-boundary pits and peaks are on the map Discussions

Write discussion on How many non-boundary pits and peaks are on the map
Your posts are moderated
Related Questions
Describe about the container class. -Class to hold objects in external storage or memory. It acts as a generic holder. - It has a predefined behaviour and a known interface.

Write a program to find the area under the curve y = f(x) between x = a and x = b, integrate y = f(x) between the limits of a and b. The area under a curve between two points can b

Flash my terminal vx670 Project Description: Have VeriFone software need it to communicate with the vx670 through com port 1 it is not talking I'm not sure why have all the r

I need whatsapp software in my website Project Description: i need whatsapp software in my website same this whatsapp if anyone can make to me this in my website Skills

Declaration of Variables: Variables are declared as follows: int a; float b;   Assigning value to variables: int a = 100; Declaring and assigning is called ini

Constructors By definition, a constructor function of some class is a member function that automatically gets implemented whenever an instance of the class to which the constru


The voltage at the terminals of a battery is 52V when no load is linked and 48.8V when a load taking 80A is connected. Find the internal resistance of the battery. What wou

Can I explicitly call a destructor if I've allocated my object with new?

What is the difference between an external iterator and an internal iterator? Ans) An internal iterator is executed with member functions of the class that has items to step th