i need a program in matlab..??

I have values like:

0-56 it should multiply with 92.5,
57-112 it should multiply with 95.2,
113-168 it should multiply with 95.8,
169-225 it should multiply with 95.9.

I need a program for these conditions. Please help me friends...

Answer 1

[Walter Roberson]

histc with the two outputs to figure out which range you are in. Use the bin number to index a vector of constants to multiply.

[nani kalyan]

i didnot understand your answer..??

[Joseph Cheng]

did you read the document of histc? the examples in the documentation can be adapted to:

test = 1:15;
binranges = [1 5 10 16];
[N bincounts] = histc(x,binranges)
output = zeros(size(x)); 
for ind = 1:length(binranges)-1
    output(bincounts==ind) = x(bincounts==ind)*ind;
end

[nani kalyan]

what is 'x'......??

[Joseph Cheng]

x should be test. I was rushed but i'm sure you could have figured that out.

[nani kalyan]

no, i didnot get bro.

Answer 2

[Andrei Bobrov]

a = [92.5,95.2,95.8,95.9]';
x = randi(225,15,1);

[~,ii] = histc(x,[0,57,113,169,225]);
out = x.*a(ii);

[nani kalyan]

For the column 3, i need to check those conditions. so, i need the program for that.

[Walter Roberson]

Use xlsread() to read column 3 of the file, and assign the values to x.

Answer 3

[Image Analyst]

Here's another approach that does what (I think) you said :

% Make up some sample data
numElements = 100;
maxValue = 200; % Whatever
% Create sample data.
data = maxValue * rand(1, numElements);
% 0-56 it should multiply with 92.5, 
% 57-112 it should multiply with 95.2, 
% 113-168 it should multiply with 95.8, 
% 169-225 it should multiply with 95.9. 
% Do the algorithm.
% 0-56 it should multiply with 92.5, 
logicalVector = data >= 0 & data < 56;
data(logicalVector) = data(logicalVector) * 92.5;
% 57-112 it should multiply with 95.2, 
logicalVector = data >= 57 & data < 112;
data(logicalVector) = data(logicalVector) * 95.2;
% 113-168 it should multiply with 95.8, 
logicalVector = data >= 113 & data < 168;
data(logicalVector) = data(logicalVector) * 95.8;
% 169-225 it should multiply with 95.9. 
logicalVector = data >= 169 & data < 225;
data(logicalVector) = data(logicalVector) * 95.9;

Note that if your data is floating point, there are some gaps in your ranges, like values between 56 and 57 don't get multiplied by anything. However if you just have integers, that's not a problem