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

A: Use operator overloading to present a friend left-shift operator, operator #include class Fred { public: friend std::ostream& operator ... private: int i_; // onl

Project Description: I posted listings on a site that is like eBay but for video games. I post the similar listing many times daily, but need something that will let me post

Question: (a) Explain the function fseek(). Using an appropriate example, write the full syntax for this function. (b) Write a C or C++ program that will perform the follo

Objective:  Construct a C program that controls the LCD display, and is capable of displaying strings.  Add functions to the C program that allows more control over the display.

Project Description: Need to develop an expert advisor base on sthocastic oscilator with my own setting.. Very basic touch line OB/OS only but on my setting n condition Skill

how to search, display all data and delete data

What is Namespace and Explicit container Namespace - Namespaces are used to group entities such as objects, classes and functions under a name. Explicit container.

wap to calculatethe volume of cone,cylinderand sphere

write a program that counts the number of occurrences of the string in the n-th Padovan string P(n)   program in java // aakash , suraj , prem sasi kumar kamaraj college