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I want to store x and y coordinates from another class. I want to store it in a field or Array list. The coordinates should be taken from a click on a frame.
I got no idea how to do it.
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I am trying to simplify an expression which has an unknown varaible in it. I am doing it in scala and I am using case classes. The thing is I don't know how to handle an unknown variable e.g when 4 * 4 * x should become 16 * x but I don't know how to get the * x. Can anyone help
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I create a specific pattern about persons and i have several persons how can i choose randomly and write it in specific pattern
add your persons to a list and get random number 0 to size of list, pick item with random number
import 'dart:math';
Random random = new Random();
int randomNumber = random.nextInt(<list_size>); // from 0 to list_size-1
get list[randomNumber]
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I want to make a loop in order to add the current state with the previous state.
For example:
M=1000;
for i=1:M A=i*(x(i));
This formula will be for M=1 but when M=2 the formula will be like this:
A=(i*(x(i))+((i-1)*(x(i-1)))
and when M=3 the formula will be
A=(i*(x(i))+((i-1)*(x(i-1)))+((i-2)*(x(i-2))
and so on till reach the maximum length of M which is 1000.
Your question is quite vague but it sounds like you just want a cumulative sum of the i*x(i) series:
i = 1:M;
s = i.*x(i);
cumsum(s);
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I need matlab coding for measuring mean value of one row in a matrix of 180 by 50 rows and columns. Each time the number of row in a matrix needs to be updated to get mean value of next row (like new_row=1:1:180). Kindly respond as soon as possible
You are looking for mean().
mean(A,2)
This will give you the means of each row of matrix A.
P.S.: If you already save one row in a vector, say new_row, you can simply use:
mean(new_row)
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The default matlab function medfilt2 uses a rectangular mask.
Thanks guys
you can use ordfilt2 .
For example, if your "ring" is just defined by:
ring= fspecial('gaussian',21,1)
ring = ring>eps & ring<1e-9
then:
order=sum(ring(:))/2;
B = ordfilt2(A,order,ring);
replaces each element in A by the order-th element in the sorted set of neighbors specified by the nonzero elements in the ring domain.
Here I chose 'order' to be half the total # of the pixels in the ring.